A two-year study experiment was conducted from January 2021 to December 2022 at the Teppi Agricultural Research Center (TARC) with the aim of identifying suitable planting material and an appropriate pre-planting storage method that can enhance turmeric seed quality and yield under rain-fed conditions. The experiment consisted of three planting materials (mother rhizomes, finger rhizomes, and mixed rhizomes) and five pre-planting storage methods (cemented floor, under tree shade, raised mesh-wired bed, pit with grass cover, and pit with soil cover). These factors were factorially arranged using a randomized complete block design with three replications. The results from the analysis of variance revealed that the seed quality, growth, and seed rhizome yield of turmeric were significantly (p<0.05) influenced by the main effect of both planting material and storage method. However, their interaction did not significantly affect these attributes (p>0.05). The highest clean and sprouted seed rhizomes, as well as total sprouts, were recorded in mother seed rhizomes and seed rhizomes stored under tree shade. Conversely, storing mother seed rhizomes on cemented floors resulted in the highest seed weight losses. Finger seed rhizomes stored in soil-covered pits produced the highest percentages of non-sprouted and decayed seed rhizomes. Regarding growth attributes, mother seed rhizomes led to the highest plant stands, plant height, stem girth, leaf growth, and tiller number. Storing seed rhizomes under tree shade performed the best across these growth attributes. Turmeric plants grown from mother seed rhizomes yielded a higher number of mother and finger rhizomes per plant and the highest fresh rhizome yield. Likewise, storing seed rhizomes under tree shade resulted in the highest fresh rhizome yield. In general, utilizing mother seed rhizomes and storing them under tree shade improved turmeric seed quality, growth, and seed rhizome yield. Therefore, farmers in the area are recommended to adopt these practices, but further research is needed to assess their economic feasibility.
{"title":"Effect of planting material and pre-planting storage method on rhizome sprouting, crop stand, and seed rhizome yield of turmeric (Curcuma longa L.) at Teppi, Southwestern Ethiopia","authors":"Behailu Mekonnen, Asrade Chanie","doi":"10.56027/joasd.092024","DOIUrl":"https://doi.org/10.56027/joasd.092024","url":null,"abstract":"A two-year study experiment was conducted from January 2021 to December 2022 at the Teppi Agricultural Research Center (TARC) with the aim of identifying suitable planting material and an appropriate pre-planting storage method that can enhance turmeric seed quality and yield under rain-fed conditions. The experiment consisted of three planting materials (mother rhizomes, finger rhizomes, and mixed rhizomes) and five pre-planting storage methods (cemented floor, under tree shade, raised mesh-wired bed, pit with grass cover, and pit with soil cover). These factors were factorially arranged using a randomized complete block design with three replications. The results from the analysis of variance revealed that the seed quality, growth, and seed rhizome yield of turmeric were significantly (p<0.05) influenced by the main effect of both planting material and storage method. However, their interaction did not significantly affect these attributes (p>0.05). The highest clean and sprouted seed rhizomes, as well as total sprouts, were recorded in mother seed rhizomes and seed rhizomes stored under tree shade. Conversely, storing mother seed rhizomes on cemented floors resulted in the highest seed weight losses. Finger seed rhizomes stored in soil-covered pits produced the highest percentages of non-sprouted and decayed seed rhizomes. Regarding growth attributes, mother seed rhizomes led to the highest plant stands, plant height, stem girth, leaf growth, and tiller number. Storing seed rhizomes under tree shade performed the best across these growth attributes. Turmeric plants grown from mother seed rhizomes yielded a higher number of mother and finger rhizomes per plant and the highest fresh rhizome yield. Likewise, storing seed rhizomes under tree shade resulted in the highest fresh rhizome yield. In general, utilizing mother seed rhizomes and storing them under tree shade improved turmeric seed quality, growth, and seed rhizome yield. Therefore, farmers in the area are recommended to adopt these practices, but further research is needed to assess their economic feasibility.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"51 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140266701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Brachypodium species, particularly B. distachyon, B. hybridum, and B. stacei, have rapidly become valuable models in plant research, providing important insights into the genetics, physiology, and ecology of grasses. This review examines the multifaceted importance of these species, highlighting their central role in understanding cereal crop relatives and delving into their adaptability to a range of abiotic stresses, particularly in the context of climate change mitigation. Given the increasing threat of unpredictable weather patterns and global food security, the genetic reservoir and adaptability of Brachypodium species offer promising opportunities for sustainable agricultural innovation. Moreover, it is emphasized that maintaining their genetic diversity is critical, not only for continuity of research, but also for the potential ecological and economic benefits they offer. As we move through the complexities of the Anthropocene, Brachypodium is a testament to the complex interplay of genetics, environment, and human endeavor, and calls for a collaborative approach to harness its full potential for future agricultural resilience and sustainability.
Brachypodium 物种，尤其是 B. distachyon、B. hybridum 和 B. stacei，已迅速成为植物研究领域的宝贵模型，为禾本科植物的遗传学、生理学和生态学提供了重要见解。本综述探讨了这些物种的多方面重要性，强调了它们在了解谷类作物近缘种方面的核心作用，并深入研究了它们对一系列非生物胁迫的适应性，尤其是在减缓气候变化的背景下。鉴于不可预测的天气模式和全球粮食安全的威胁与日俱增， Brachypodium 物种的基因库和适应性为可持续农业创新提供了大有可为的机会。此外，我们还强调，保持其遗传多样性至关重要，这不仅关系到研究的连续性，还关系到其潜在的生态和经济效益。当我们在人类世的复杂环境中前行时， Brachypodium 证明了遗传学、环境和人类努力之间复杂的相互作用，并呼吁采用合作的方法来利用其全部潜力，以实现未来农业的复原力和可持续性。
{"title":"Eco-Genomic Alchemy: The Crucial Intersections of Brachypodium, Agriculture, and Climate Dynamics","authors":"Mohamed Neji","doi":"10.56027/joasd.082024","DOIUrl":"https://doi.org/10.56027/joasd.082024","url":null,"abstract":"Brachypodium species, particularly B. distachyon, B. hybridum, and B. stacei, have rapidly become valuable models in plant research, providing important insights into the genetics, physiology, and ecology of grasses. This review examines the multifaceted importance of these species, highlighting their central role in understanding cereal crop relatives and delving into their adaptability to a range of abiotic stresses, particularly in the context of climate change mitigation. Given the increasing threat of unpredictable weather patterns and global food security, the genetic reservoir and adaptability of Brachypodium species offer promising opportunities for sustainable agricultural innovation. Moreover, it is emphasized that maintaining their genetic diversity is critical, not only for continuity of research, but also for the potential ecological and economic benefits they offer. As we move through the complexities of the Anthropocene, Brachypodium is a testament to the complex interplay of genetics, environment, and human endeavor, and calls for a collaborative approach to harness its full potential for future agricultural resilience and sustainability.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"60 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chahdoura Hassiba, El-Ayeb-Zakhama Asma, O. Ayari, Manel Ben M'hadheb, Hatem El Majdoub, G. Flamini, Safia Elbok, L. Achour
The cactus pear is belongs to the Cactaceae family Opuntia. The cladodes are known as nopalitos, are frequently consumed and used in folk medicine due to their beneficial effects and phytochemical composition. Cactus in Tunisia is mostly localized in areas characterized by low quality soils and water scarcity. In this study we evaluate the amount of volatile compounds on the powder obtained from Opuntia microdasys Lehm. and macrorhiza Engelm. cladodes were investigated by HS-SPME-GC-MS and anatomical structure of cladodes was identify by light microscopy. The most important compound found in the cladodes of O. microdasys is limonene (11.20 %), while O.macrorhiza was mainly rich in camphor (49.10 %). The highest contents of phytochemicals compounds were found in the cladode of Opuntia microdasys. Light microscopy revealed the presence of a high number of calcium oxalate crystals in fresh cladodes.
{"title":"Volatile compounds and anatomical features of Opuntia sp. cladodes","authors":"Chahdoura Hassiba, El-Ayeb-Zakhama Asma, O. Ayari, Manel Ben M'hadheb, Hatem El Majdoub, G. Flamini, Safia Elbok, L. Achour","doi":"10.56027/joasd.062024","DOIUrl":"https://doi.org/10.56027/joasd.062024","url":null,"abstract":"The cactus pear is belongs to the Cactaceae family Opuntia. The cladodes are known as nopalitos, are frequently consumed and used in folk medicine due to their beneficial effects and phytochemical composition. Cactus in Tunisia is mostly localized in areas characterized by low quality soils and water scarcity. In this study we evaluate the amount of volatile compounds on the powder obtained from Opuntia microdasys Lehm. and macrorhiza Engelm. cladodes were investigated by HS-SPME-GC-MS and anatomical structure of cladodes was identify by light microscopy. \u0000The most important compound found in the cladodes of O. microdasys is limonene (11.20 %), while O.macrorhiza was mainly rich in camphor (49.10 %). The highest contents of phytochemicals compounds were found in the cladode of Opuntia microdasys. Light microscopy revealed the presence of a high number of calcium oxalate crystals in fresh cladodes.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"154 S312","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140428734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rami Rahmani, Sameh Sassi Aydi, Khadija El Arbi, Fatma Ben Ahmed, Amina Hzemi, M. Debouba, Samir Aydi
Olive pomace is an environmentally harmful waste from the olive oil industry, containing large amounts of bioactive compounds that could be used in several areas. In the present study, the olive pomace, by-products, was fractionated successively using organic solvents of increasing polarity (cyclohexane (CYHA), ethanol (EtOH) and distilled water) to determine their biochemical composition (total phenolic content, total flavonoid content, HPLC, and GC-MS) and biological activities (antioxidant and antibacterial activities). In addition, the olive pomace was extract directly by the distilled water to determine its physicochemical characteristics (pH, humidity and quantity of oil). The study proved that olive pomace has a low content of total phenolic content in the three extracts (from 0.81 to 2.24 mg GAE/g dry residue). Likewise, for the content of total flavonoids, it presents in the CYHA and EtOH extracts of 0.5 and 0.4 mg QE/g dry residue, respectively. GC-MS data showed the detection of 6 volatile compounds in the cyclohexane extract which contains two major compounds were hexadecanoic acid (2.23%) and 9-octadecenoic acid (8.67%). Moreover, HPLC data showed that chrysin compound was the major one among the four detected ones in the organic extracts of olive pomace. The results showed that the CYHA extract exhibited the best antioxidant power exceeds 50% on the other hand, it is less than 25% for the ethanoic and aqueous extract. In the aqueous extract there is a stronger antibacterial activity against the strain L. monocytogenes (13 mm) than the reference (ampicillin) and the bacterial strain B. cereus (11 mm) associated with their phenolic activity.
{"title":"Volatile and non-volatile profiles of olive pomace and its potential uses","authors":"Rami Rahmani, Sameh Sassi Aydi, Khadija El Arbi, Fatma Ben Ahmed, Amina Hzemi, M. Debouba, Samir Aydi","doi":"10.56027/joasd.052024","DOIUrl":"https://doi.org/10.56027/joasd.052024","url":null,"abstract":"Olive pomace is an environmentally harmful waste from the olive oil industry, containing large amounts of bioactive compounds that could be used in several areas. In the present study, the olive pomace, by-products, was fractionated successively using organic solvents of increasing polarity (cyclohexane (CYHA), ethanol (EtOH) and distilled water) to determine their biochemical composition (total phenolic content, total flavonoid content, HPLC, and GC-MS) and biological activities (antioxidant and antibacterial activities). In addition, the olive pomace was extract directly by the distilled water to determine its physicochemical characteristics (pH, humidity and quantity of oil). The study proved that olive pomace has a low content of total phenolic content in the three extracts (from 0.81 to 2.24 mg GAE/g dry residue). Likewise, for the content of total flavonoids, it presents in the CYHA and EtOH extracts of 0.5 and 0.4 mg QE/g dry residue, respectively. GC-MS data showed the detection of 6 volatile compounds in the cyclohexane extract which contains two major compounds were hexadecanoic acid (2.23%) and 9-octadecenoic acid (8.67%). Moreover, HPLC data showed that chrysin compound was the major one among the four detected ones in the organic extracts of olive pomace. The results showed that the CYHA extract exhibited the best antioxidant power exceeds 50% on the other hand, it is less than 25% for the ethanoic and aqueous extract. In the aqueous extract there is a stronger antibacterial activity against the strain L. monocytogenes (13 mm) than the reference (ampicillin) and the bacterial strain B. cereus (11 mm) associated with their phenolic activity.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"13 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140436380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kamel Hajlaoui, Ola Abdelhedi, A. Salem, Nahed Fakhfekh, Nacim Zouari, Mourad Jridi
L’objectif de cette étude est de formuler une saucisse à base de viande de dromadaire qui s’aligne avec la tendance des « allégations santé » visant à réduire la consommation de viandes rouges conventionnelles et de graisses animales. Par ailleurs, l’effet de la substitution de la fécule de pomme de terre, couramment utilisé en tant qu’agent liant dans les produits charcutiers, par la farine intégrale d’éleusine (Eleusine coracana L.) sur la qualité de la saucisse a été étudié. L’éleusine est cultivée dans l’oasis de Chenini-Gabès, située dans le sud-est de la Tunisie. L’analyse de sa composition révèle une teneur 70,19% en carbohydrates, dont 11,5% sont des fibres alimentaires, 13,53% de protéines, 2,75% de cendres, 1,81% de lipides et 0,25% de composés phénoliques. Sa capacité de rétention d’eau atteint 150 g d’eau/100 g. Par ailleurs, l’activité anti-DPPH• de l’extrait eau/éthanol révèle une valeur de CI50 de 60 µg/ml. Ensuite, la stabilité de la saucisse de dromadaire a été suivie pendant 21 j de stockage réfrigéré. L’introduction de la farine d’éleusine n’a pas altéré la qualité sensorielle, et a réussi à maintenir les caractéristiques texturales, à stabiliser la couleur et les pigments héminiques, et à limiter l’oxydation des lipides. Les résultats de cette étude suggèrent que la farine d’éleusine se positionne comme un substitut prometteur de la fécule de pomme de terre dans la fabrication de saucisses. Il est intéressant d’approfondir les recherches dans ce domaine afin d’explorer davantage les applications potentielles de la farine d’éleusine dans l’industrie alimentaire.
{"title":"Développement d’une nouvelle saucisse de dromadaire : Effet de l’incorporation d’éleusine (Eleusine coracana L.) sur la qualité sensorielle et la stabilité","authors":"Kamel Hajlaoui, Ola Abdelhedi, A. Salem, Nahed Fakhfekh, Nacim Zouari, Mourad Jridi","doi":"10.56027/joasd.042024","DOIUrl":"https://doi.org/10.56027/joasd.042024","url":null,"abstract":"L’objectif de cette étude est de formuler une saucisse à base de viande de dromadaire qui s’aligne avec la tendance des « allégations santé » visant à réduire la consommation de viandes rouges conventionnelles et de graisses animales. Par ailleurs, l’effet de la substitution de la fécule de pomme de terre, couramment utilisé en tant qu’agent liant dans les produits charcutiers, par la farine intégrale d’éleusine (Eleusine coracana L.) sur la qualité de la saucisse a été étudié. L’éleusine est cultivée dans l’oasis de Chenini-Gabès, située dans le sud-est de la Tunisie. L’analyse de sa composition révèle une teneur 70,19% en carbohydrates, dont 11,5% sont des fibres alimentaires, 13,53% de protéines, 2,75% de cendres, 1,81% de lipides et 0,25% de composés phénoliques. Sa capacité de rétention d’eau atteint 150 g d’eau/100 g. Par ailleurs, l’activité anti-DPPH• de l’extrait eau/éthanol révèle une valeur de CI50 de 60 µg/ml. Ensuite, la stabilité de la saucisse de dromadaire a été suivie pendant 21 j de stockage réfrigéré. L’introduction de la farine d’éleusine n’a pas altéré la qualité sensorielle, et a réussi à maintenir les caractéristiques texturales, à stabiliser la couleur et les pigments héminiques, et à limiter l’oxydation des lipides. Les résultats de cette étude suggèrent que la farine d’éleusine se positionne comme un substitut prometteur de la fécule de pomme de terre dans la fabrication de saucisses. Il est intéressant d’approfondir les recherches dans ce domaine afin d’explorer davantage les applications potentielles de la farine d’éleusine dans l’industrie alimentaire.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"35 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140435255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Osama Milud Sleik, Zainb Jomma Aldaihk, N. Djébali
This study was conducted within the framework of a research program at the Agricultural Research Center for Sustainable Development during the 2021-2022 agricultural season through field visits to pesticide marketing and storage sites in Tripoli and its suburbs to investigate the condition of commercial stores and their suitability to health conditions, the nature of their activity and their legal status, along with the status of the people working in them, their educational level and the extent to which their awareness of the dangers of pesticides and their impact on their health. Some questions were also about the types of pesticides traded in the Libyan market, their physical condition, their specialties, their commercial sources, and how to dispose of their empty containers. It became clear from this study that approximately half of the pesticide shops were in the main streets of Tripoli, and only 27% of them were in rural areas. Moreover, no less than 50% of the stores do not have warehouses, and those that do have warehouses are considered inappropriate for storing these dangerous materials. It was also shown that there is a lack of attention and implementation of the sanitary conditions in pesticide stores, including ventilation, air conditioners, and the height of the stores. We also noticed that the percentage of licensed shops designated for selling pesticides did not exceed 35%, and that many of them hold licenses not designated for selling pesticides, and some of them don’t have license. As for the materials that are marketed alongside pesticides, most of them are agricultural equipment, with the presence of fertilizers and seeds. Regarding the persons that are selling pesticides, their ages range from the twenties to the fifties, and their educational levels vary, as the percentage of illiterate people was 15%, the percentage of those who obtained compulsory primary, middle, and secondary education was 49%, the percentage of those who obtained an intermediate and higher diploma was 23%, and the percentage of university salespeople was 13%. It is striking that 79% of the sellers are not specialized in the agricultural field. As for the level of knowledge of the sellers about the dangers of chemical pesticides, it was found that 72% of them have little to moderate knowledge. In addition, 77% of them do not wear protective clothing, and only sometimes at best, which shows that 43% of the workers’ health was negatively affected by their handling of pesticides. Finally, this study showed that the pesticides circulating in the Tripoli area are liquid, solid and gaseous in approximately equal proportions. As for the specialties of pesticides on offer, it turned out that 22% of them are insecticides, 21% are herbicides, 21% are fungicides, 19% are rodenticides, and 17% are acaricides. As for the sources of pesticides offered on the market, 36% of them were issued by commercial agents of international companies or from well-known wholesalers
{"title":"Investigating the current situation of chemical pesticides trade in Tripoli region and its suburbs in Libya","authors":"Osama Milud Sleik, Zainb Jomma Aldaihk, N. Djébali","doi":"10.56027/joasd.032024","DOIUrl":"https://doi.org/10.56027/joasd.032024","url":null,"abstract":"This study was conducted within the framework of a research program at the Agricultural Research Center for Sustainable Development during the 2021-2022 agricultural season through field visits to pesticide marketing and storage sites in Tripoli and its suburbs to investigate the condition of commercial stores and their suitability to health conditions, the nature of their activity and their legal status, along with the status of the people working in them, their educational level and the extent to which their awareness of the dangers of pesticides and their impact on their health. Some questions were also about the types of pesticides traded in the Libyan market, their physical condition, their specialties, their commercial sources, and how to dispose of their empty containers. It became clear from this study that approximately half of the pesticide shops were in the main streets of Tripoli, and only 27% of them were in rural areas. Moreover, no less than 50% of the stores do not have warehouses, and those that do have warehouses are considered inappropriate for storing these dangerous materials. It was also shown that there is a lack of attention and implementation of the sanitary conditions in pesticide stores, including ventilation, air conditioners, and the height of the stores. We also noticed that the percentage of licensed shops designated for selling pesticides did not exceed 35%, and that many of them hold licenses not designated for selling pesticides, and some of them don’t have license. As for the materials that are marketed alongside pesticides, most of them are agricultural equipment, with the presence of fertilizers and seeds. Regarding the persons that are selling pesticides, their ages range from the twenties to the fifties, and their educational levels vary, as the percentage of illiterate people was 15%, the percentage of those who obtained compulsory primary, middle, and secondary education was 49%, the percentage of those who obtained an intermediate and higher diploma was 23%, and the percentage of university salespeople was 13%. It is striking that 79% of the sellers are not specialized in the agricultural field. As for the level of knowledge of the sellers about the dangers of chemical pesticides, it was found that 72% of them have little to moderate knowledge. In addition, 77% of them do not wear protective clothing, and only sometimes at best, which shows that 43% of the workers’ health was negatively affected by their handling of pesticides. Finally, this study showed that the pesticides circulating in the Tripoli area are liquid, solid and gaseous in approximately equal proportions. As for the specialties of pesticides on offer, it turned out that 22% of them are insecticides, 21% are herbicides, 21% are fungicides, 19% are rodenticides, and 17% are acaricides. As for the sources of pesticides offered on the market, 36% of them were issued by commercial agents of international companies or from well-known wholesalers ","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"16 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140440675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abdelkader Idi, Jamila Msadek, A. Tlili, M. Tarhouni
According to the Intergovernmental Panel on Climate Change (IPCC), climate change is mainly manifested by severe droughts and rainfall decrease. These effects are multiple and vary from one region to another around the world including rising temperatures, altered precipitation patterns and degradation of the natural flora. The Zarat region (Gulf of Gabes) is notable for its climate variation, shallow waters, high levels of temperature and salinity. Understanding the vegetation dynamics in this coastal protected region under climate change scenarios is important for projection to the whole ecosystems. The Maxent model is used to predict the potential distribution of plant groups and Soil Adjusted Vegetation Index (SAVI) classes for many future time-periods (2021-2040, 2041-2060, 2061-2080 and 2081-2100) under different climate change scenarios in the Zarat region. Main results indicate that variables related to precipitation and temperature are more significant for predicting plants and SAVI classes distributions. Our findings can provide scientific basis for the dryland sustainable management and for plant community’s behavior under climate change.
{"title":"Modeling the natural vegetation dynamic under climate change scenarios in coastal protected dryland of southeastern Tunisia","authors":"Abdelkader Idi, Jamila Msadek, A. Tlili, M. Tarhouni","doi":"10.56027/joasd.022024","DOIUrl":"https://doi.org/10.56027/joasd.022024","url":null,"abstract":"According to the Intergovernmental Panel on Climate Change (IPCC), climate change is mainly manifested by severe droughts and rainfall decrease. These effects are multiple and vary from one region to another around the world including rising temperatures, altered precipitation patterns and degradation of the natural flora. The Zarat region (Gulf of Gabes) is notable for its climate variation, shallow waters, high levels of temperature and salinity. Understanding the vegetation dynamics in this coastal protected region under climate change scenarios is important for projection to the whole ecosystems. The Maxent model is used to predict the potential distribution of plant groups and Soil Adjusted Vegetation Index (SAVI) classes for many future time-periods (2021-2040, 2041-2060, 2061-2080 and 2081-2100) under different climate change scenarios in the Zarat region. Main results indicate that variables related to precipitation and temperature are more significant for predicting plants and SAVI classes distributions. Our findings can provide scientific basis for the dryland sustainable management and for plant community’s behavior under climate change.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140443153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Les résultats des travaux antérieurs sur la caractérisation des cultivars locaux du carthame, suscite d’être approfondie pour une meilleure connaissance de ce patrimoine génétique. La présente étude a pour objectif de mettre en évidence la relation qui peut exister entre les caractéristiques de l’inflorescence (le capitule) et la production du plant en fonction de degré de ramification de la plante (primaire, secondaire ou tertiaire). L’étude porte sur quatre cultivars locaux du carthame (Carthamus tinctorius L.) cultivés dans la région de l’Oued Righ située au sud-est algérien. Le dispositif expérimental adopté est un bloc aléatoire complet à trois répétitions. Les résultats obtenus ont fait l’objet d’une analyse de variance (ANOVA), suivie d’une analyse de corrélation. En fonction des conditions pédoclimatiques de la région d’étude, les résultats obtenus démontrent que le type de ramification présente un effet marquant sur la production du plant chez les quatre cultivars locaux du carthame et les capitules issus de la ramification secondaire déterminent la production en grains du plant. L’analyse des corrélations a révélé que les relations de la production en grains du plant en fonction de type de ramification sont diverses et ceux relatives aux ramifications primaires et secondaires prédominent.
{"title":"Biométrie des inflorescences de quatre cultivars oasiens du carthame en fonction de degrés de ramification de la plante","authors":"A. Tirichine, A. Allam, Habib Madani","doi":"10.56027/joasd.012024","DOIUrl":"https://doi.org/10.56027/joasd.012024","url":null,"abstract":"Les résultats des travaux antérieurs sur la caractérisation des cultivars locaux du carthame, suscite d’être approfondie pour une meilleure connaissance de ce patrimoine génétique. La présente étude a pour objectif de mettre en évidence la relation qui peut exister entre les caractéristiques de l’inflorescence (le capitule) et la production du plant en fonction de degré de ramification de la plante (primaire, secondaire ou tertiaire). \u0000L’étude porte sur quatre cultivars locaux du carthame (Carthamus tinctorius L.) cultivés dans la région de l’Oued Righ située au sud-est algérien. \u0000Le dispositif expérimental adopté est un bloc aléatoire complet à trois répétitions. Les résultats obtenus ont fait l’objet d’une analyse de variance (ANOVA), suivie d’une analyse de corrélation. En fonction des conditions pédoclimatiques de la région d’étude, les résultats obtenus démontrent que le type de ramification présente un effet marquant sur la production du plant chez les quatre cultivars locaux du carthame et les capitules issus de la ramification secondaire déterminent la production en grains du plant. L’analyse des corrélations a révélé que les relations de la production en grains du plant en fonction de type de ramification sont diverses et ceux relatives aux ramifications primaires et secondaires prédominent.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"2 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139958121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sulla carnosa Desf. plants were subjected to 0, 100, 200, and 300 mM NaCl for 40 days. Leaf and stem growth as well as root and leaf water contents were not affected even at 300 mM NaCl, confirming the halophytic nature of this species. An accumulation of Na+ in roots and at a higher magnitude in leaves together with a decline in K+ concentrations suggest that Na+ involvement in osmotic adjustment as a cheap osmoticum. This typical halophytic response together with the reduced transpiration rate by stomata closure may explain the ability of S. carnosa to maintain its water status. Interestingly, the stomatal limitations of photosynthetic activity did not affect Fv/Fm, F0, and PSII energy distribution to photochemical process [Y(II)], regulated non-photochemical quenching [Y(NPQ)], and non- regulated non-photochemical quenching [Y(NO)], which suggests a high ability of this halophyte to cope with the energy expected to exceed the demand for its photosynthesis.
将 Sulla carnosa Desf.植株置于 0、100、200 和 300 mM NaCl 中 40 天。即使在 300 mM NaCl 的条件下，叶片和茎的生长以及根和叶的含水量也没有受到影响，这证实了该物种的盐生特性。根中 Na+ 的积累和叶中更高浓度的 Na+ 以及 K+ 浓度的下降表明，Na+ 作为一种廉价的渗透调节剂参与了渗透调节。这种典型的盐生反应以及气孔关闭导致的蒸腾速率降低，可以解释肉质红豆杉维持水分状态的能力。有趣的是，气孔对光合作用活动的限制并不影响 Fv/Fm、F0 和 PSII 在光化学过程[Y(II)]、调节性非光化学淬灭[Y(NPQ)]和非调节性非光化学淬灭[Y(NO)]中的能量分配，这表明这种卤叶植物有很强的能力应对超出其光合作用需求的能量。
{"title":"The effects of increasing salinity levels on Sulla carnosa photosynthesis are mainly of stomatal nature","authors":"Ellouzi Hasna, M. Rabhi","doi":"10.56027/joasd.322023","DOIUrl":"https://doi.org/10.56027/joasd.322023","url":null,"abstract":"Sulla carnosa Desf. plants were subjected to 0, 100, 200, and 300 mM NaCl for 40 days. Leaf and stem growth as well as root and leaf water contents were not affected even at 300 mM NaCl, confirming the halophytic nature of this species. An accumulation of Na+ in roots and at a higher magnitude in leaves together with a decline in K+ concentrations suggest that Na+ involvement in osmotic adjustment as a cheap osmoticum. This typical halophytic response together with the reduced transpiration rate by stomata closure may explain the ability of S. carnosa to maintain its water status. Interestingly, the stomatal limitations of photosynthetic activity did not affect Fv/Fm, F0, and PSII energy distribution to photochemical process [Y(II)], regulated non-photochemical quenching [Y(NPQ)], and non- regulated non-photochemical quenching [Y(NO)], which suggests a high ability of this halophyte to cope with the energy expected to exceed the demand for its photosynthesis.","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139221447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ibtihel Jamil, Fathia Elmokh, Warda Tlig, K. Nagaz
Le présent travail concerne la gestion des eaux salées en irrigation de la culture de piment à travers le pratique de pilotage d’irrigation et l’utilisation de technique de magnétisation afin de réduire les risques de dégradation du sol et d’améliorer la productivité de culture. A cet effet, une expérimentation a été menée dans une parcelle expérimentale située dans la région de Médenine, Tunisie. La culture du piment variété Baklouti a été transplanté sur un sol sableux et irriguée au goutte à goutte avec des eaux ayant une salinité de 7,3 dS/m. Trois traitements d’irrigation ont considérés. Deux traitements magnétiques consistent à traiter l’eau salée par un champ magnétique en utilisant deux magnétiseurs Delta-Water (DW) et Magiko. Dans le troisième traitement (Témoin), l’eau n’a pas été traitée. Les mesures effectuées ont porté sur l’humidité et la salinité du sol, l’indice foliaire (LAI), le poids frais, et la teneur relative en eau durant le cycle de développement de la culture. A la récolte, le rendement et ses composantes (nombre des fruits /plante, poids de fruits/plante) ont été évalués. Les résultats montrent que le pilotage d’irrigation adapté aux conditions réelles maintient l’humidité du sol proche à la capacité au champ pour les trois traitements. Par ailleurs, le pilotage adopté et les quantités des pluies reçues ont permis de réduire la salinité du sol. Les traitements magnétiques améliorent la croissance de la culture avec l’augmentation de l’indice foliaire. L’augmentation de la croissance est due à une amélioration significative de la teneur relative en eau de la culture. Ces techniques résultent, également, en une augmentation du rendement (20 et 22.4 t/ha) et ses composants et une amélioration du calibre des fruits qui atteint 10.3 g pour les plantes traitées par Magiko comparé à 8.8 et 8.3 g, respectivement, pour DW et témoin. Ainsi, l’utilisation du traitement magnétique de l’eau en agriculture pourrait constituer une technique prometteuse dans la valorisation des eaux salées qui reste à confirmer par des expérimentations à long terme et dans différentes conditions
{"title":"Etude de l’effet de l’irrigation avec des eaux magnétisées sur la croissance, le rendement du piment et la salinisation du sol dans un environnement aride","authors":"Ibtihel Jamil, Fathia Elmokh, Warda Tlig, K. Nagaz","doi":"10.56027/joasd.312023","DOIUrl":"https://doi.org/10.56027/joasd.312023","url":null,"abstract":"Le présent travail concerne la gestion des eaux salées en irrigation de la culture de piment à travers le pratique de pilotage d’irrigation et l’utilisation de technique de magnétisation afin de réduire les risques de dégradation du sol et d’améliorer la productivité de culture. A cet effet, une expérimentation a été menée dans une parcelle expérimentale située dans la région de Médenine, Tunisie. La culture du piment variété Baklouti a été transplanté sur un sol sableux et irriguée au goutte à goutte avec des eaux ayant une salinité de 7,3 dS/m. Trois traitements d’irrigation ont considérés. Deux traitements magnétiques consistent à traiter l’eau salée par un champ magnétique en utilisant deux magnétiseurs Delta-Water (DW) et Magiko. Dans le troisième traitement (Témoin), l’eau n’a pas été traitée. Les mesures effectuées ont porté sur l’humidité et la salinité du sol, l’indice foliaire (LAI), le poids frais, et la teneur relative en eau durant le cycle de développement de la culture. A la récolte, le rendement et ses composantes (nombre des fruits /plante, poids de fruits/plante) ont été évalués. Les résultats montrent que le pilotage d’irrigation adapté aux conditions réelles maintient l’humidité du sol proche à la capacité au champ pour les trois traitements. Par ailleurs, le pilotage adopté et les quantités des pluies reçues ont permis de réduire la salinité du sol. Les traitements magnétiques améliorent la croissance de la culture avec l’augmentation de l’indice foliaire. L’augmentation de la croissance est due à une amélioration significative de la teneur relative en eau de la culture. Ces techniques résultent, également, en une augmentation du rendement (20 et 22.4 t/ha) et ses composants et une amélioration du calibre des fruits qui atteint 10.3 g pour les plantes traitées par Magiko comparé à 8.8 et 8.3 g, respectivement, pour DW et témoin. Ainsi, l’utilisation du traitement magnétique de l’eau en agriculture pourrait constituer une technique prometteuse dans la valorisation des eaux salées qui reste à confirmer par des expérimentations à long terme et dans différentes conditions","PeriodicalId":16583,"journal":{"name":"JOURNAL OF OASIS AGRICULTURE AND SUSTAINABLE DEVELOPMENT","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139228541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：