Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8668
K. P. Saljuna, C. K. Thankamani, K. S. Krishnamurthy, Gayathri Pavithran, M. Alagupalamuthirsolai
The experiment has been conducted to resolve the poor partitioning of dry matter towards rhizome by using plant growth regulators (PGRs). Therefore, two pot culture experiments were conducted during 2020-22 using the variety IISR Varada to investigate the effects of foliar application of PGRs (6-BAP, cycocel, GA3 and PBZ at five different concentrations viz. control, 50ppm, 100ppm,150ppm and 200ppm in three replications) on growth and yield. The experiment was laid out in Factorial CRD design under polyhouse condition. The results revealed that 6-BAP at 100ppm significantly increased the number of tillers, secondary rhizomes, tertiary rhizomes, length, diameter of rhizomes, and rhizome yield (322.3g/ plant) which is 240% more than the control.
{"title":"Effect of growth regulators on the growth and yield of ginger (Zingiber officinale Rosc.) under polyhouse condition","authors":"K. P. Saljuna, C. K. Thankamani, K. S. Krishnamurthy, Gayathri Pavithran, M. Alagupalamuthirsolai","doi":"10.25081/jpc.2023.v51.i2.8668","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8668","url":null,"abstract":"The experiment has been conducted to resolve the poor partitioning of dry matter towards rhizome by using plant growth regulators (PGRs). Therefore, two pot culture experiments were conducted during 2020-22 using the variety IISR Varada to investigate the effects of foliar application of PGRs (6-BAP, cycocel, GA3 and PBZ at five different concentrations viz. control, 50ppm, 100ppm,150ppm and 200ppm in three replications) on growth and yield. The experiment was laid out in Factorial CRD design under polyhouse condition. The results revealed that 6-BAP at 100ppm significantly increased the number of tillers, secondary rhizomes, tertiary rhizomes, length, diameter of rhizomes, and rhizome yield (322.3g/ plant) which is 240% more than the control.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"59 14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139198434","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8669
P. Anithakumari, S. Indhuja, M. Shareefa
Three Grama Panchayats in Kerala's Alappuzha district undertook community-level participatory action research in 2019–2021. A total of 90 coconut farmers participated in the adoption of ICAR-CPCRI technology to produce West Coast Tall (WCT) coconut seedlings that are resistant/tolerant to the root (wilt) disease at the community level. Partners included extension agents, coconut producers' societies (CPS) and clusters, women self-help groups (WSHGs), and agricultural labor organizations. The characteristics of technologies that are suggested for adoption in root (wilt) disease-affected tracts, such as the scientific management of young coconut trees and the production of high-quality seedlings through community nurseries, challenge the idea of adoption. There are a lot of variances in the homestead gardens' marginal holdings, including expertise, the use of technology, and access to advisory services. Government agencies provided the majority of the seedlings and extension advisory services, emphasizing the necessity for FPO-based or private extension in the coconut growing industry. The coconut farmers' understanding has significantly improved as a result of the participatory interventions for managing seedlings. The participatory demonstration and community farm school (CFS) strategy is discussed in the paper as a way for homesteads to manage juvenile coconuts while integrating new ideas and fostering cross and reciprocal learning. Refining the current extension approach requires integrating new knowledge about the characteristics of seedling growth, future economic performance, and social evaluation of choices of technological, individual, and skill-oriented interventions in risk-prone areas with debilitating root (wilt) disease.
{"title":"Community farm school approach for coconut seedlings/juveniles through collaborative social actions","authors":"P. Anithakumari, S. Indhuja, M. Shareefa","doi":"10.25081/jpc.2023.v51.i2.8669","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8669","url":null,"abstract":"Three Grama Panchayats in Kerala's Alappuzha district undertook community-level participatory action research in 2019–2021. A total of 90 coconut farmers participated in the adoption of ICAR-CPCRI technology to produce West Coast Tall (WCT) coconut seedlings that are resistant/tolerant to the root (wilt) disease at the community level. Partners included extension agents, coconut producers' societies (CPS) and clusters, women self-help groups (WSHGs), and agricultural labor organizations. The characteristics of technologies that are suggested for adoption in root (wilt) disease-affected tracts, such as the scientific management of young coconut trees and the production of high-quality seedlings through community nurseries, challenge the idea of adoption. There are a lot of variances in the homestead gardens' marginal holdings, including expertise, the use of technology, and access to advisory services. Government agencies provided the majority of the seedlings and extension advisory services, emphasizing the necessity for FPO-based or private extension in the coconut growing industry. The coconut farmers' understanding has significantly improved as a result of the participatory interventions for managing seedlings. The participatory demonstration and community farm school (CFS) strategy is discussed in the paper as a way for homesteads to manage juvenile coconuts while integrating new ideas and fostering cross and reciprocal learning. Refining the current extension approach requires integrating new knowledge about the characteristics of seedling growth, future economic performance, and social evaluation of choices of technological, individual, and skill-oriented interventions in risk-prone areas with debilitating root (wilt) disease.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"296 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201165","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8405
S. Neenu, Ravi Bhat, V. Selvamani, P. Subramanian
Phosphorus is one of the major nutrients required for coconut production. The information about the fate of native and applied phosphorus in soil is essential for better management of the nutrient. The changes on inorganic P fractions and P availability in soil after 43 years of coconut cultivation were studied from a long term fertilizer cum manurial experiment at CPCRI, Kasaragod. There were 6 treatments viz. tillage with organic and inorganic fertilizer, tillage with inorganic fertilizer, inorganic fertilizers with basin forking, tillage alone, herbicide application without tillage and fertilizer and the control. Soil samples were taken at two depths (0-30 and 30-60 cm) from coconut basin for analysis. Phosphorus was fractionated into Easily Soluble P (ES-P), Aluminium P (AI-P), Iron P (Fe-P), Calcium P (Ca-P) and Reductant Soluble P (RS-P) through sequential extraction. The dominant phosphorus fraction in the coconut basin at 0-30 cm depth was Ca-P and the trend is as follows: Ca-P> Fe-P> RS-P>Al-P>ES-P. However, at 30-60 cm depth, Fe-P became the dominant fraction and the trend is Fe-P>Ca-P>RS-P>Al-P>ES-P. Long-term phosphorus fertilization would facilitate the accumulation of soil Ca-P, and thus improve soil P availability. In the interspaces, Fe-P was the dominating fraction in both the depths followed by Ca-P and RS-P. The difference in P fractions in fertilized and non-fertilized plots clearly showed that the fertilized plots have high content of all the inorganic phosphorus fractions in both the depths. Application of mineral P along with forking in basin showed a high concentration of all the inorganic P fractions compared to other fertilizer applied treatments.
{"title":"Inorganic phosphorus fractions and phosphorus availability in long term fertilizer cum manurial trials under coconut cultivation","authors":"S. Neenu, Ravi Bhat, V. Selvamani, P. Subramanian","doi":"10.25081/jpc.2023.v51.i2.8405","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8405","url":null,"abstract":"Phosphorus is one of the major nutrients required for coconut production. The information about the fate of native and applied phosphorus in soil is essential for better management of the nutrient. The changes on inorganic P fractions and P availability in soil after 43 years of coconut cultivation were studied from a long term fertilizer cum manurial experiment at CPCRI, Kasaragod. There were 6 treatments viz. tillage with organic and inorganic fertilizer, tillage with inorganic fertilizer, inorganic fertilizers with basin forking, tillage alone, herbicide application without tillage and fertilizer and the control. Soil samples were taken at two depths (0-30 and 30-60 cm) from coconut basin for analysis. Phosphorus was fractionated into Easily Soluble P (ES-P), Aluminium P (AI-P), Iron P (Fe-P), Calcium P (Ca-P) and Reductant Soluble P (RS-P) through sequential extraction. The dominant phosphorus fraction in the coconut basin at 0-30 cm depth was Ca-P and the trend is as follows: Ca-P> Fe-P> RS-P>Al-P>ES-P. However, at 30-60 cm depth, Fe-P became the dominant fraction and the trend is Fe-P>Ca-P>RS-P>Al-P>ES-P. Long-term phosphorus fertilization would facilitate the accumulation of soil Ca-P, and thus improve soil P availability. In the interspaces, Fe-P was the dominating fraction in both the depths followed by Ca-P and RS-P. The difference in P fractions in fertilized and non-fertilized plots clearly showed that the fertilized plots have high content of all the inorganic phosphorus fractions in both the depths. Application of mineral P along with forking in basin showed a high concentration of all the inorganic P fractions compared to other fertilizer applied treatments.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"419 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204041","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8666
A. Kireeti, G. Ramanandam, B. Bhagavan, N.B.V. Chalapathi Rao, B. Neeraja, V. G. Rao, B. Srinivasulu, B. A. Jerard
Coconut (Cocos nucifera L.) is one of the plantation crops with more life span, so suitability of a variety or hybrid for particular region may improve the productivity of the coconut. An experiment was carried out with seven hybrids and two varieties viz. Chandra Sankara (COD × WCT), Chandra Laksha (LCT x COD), VHC1 (ECT × MGD), VHC-2 (ECT × MYD), Kera Ganga (WCT × GBGD), Laksha Ganga (LCT × GBGD), Godavari Ganga (ECT x GBGD), Kera Chandra (Double Century) and Chandra Kalpa at Dr.YSRHUHorticultural Research Station, Ambajipeta, Dr. B. R. Ambedkar Konaseema Dist., Andhra Pradesh. The experiment was initiated in 2002, in Randomized Block Design in three replicated blocks. The compiled data for six years (2015- 2021) revealed that, Godavari Ganga recorded significantly highest nut yield /palm/year (144.40 nuts) followed by VHC-2 (134.93 nuts) and Kera Ganga (133.33 nuts). Godavari Ganga recorded maximum copra yield of 3.20 t/ha and oil yield of 2.20 t/ha. Tender nut water quantity was recorded more (322.5 mL) in VHC-2 and Godavari Ganga. Due to its superior nut, copra and oil yield, Godavari Ganga and VHC-2 can be recommended for cultivation Andhra Pradesh.
椰子（Cocos nucifera L.）是寿命较长的种植作物之一，因此适合特定地区的品种或杂交种可提高椰子的产量。在 YSRUHHorticulture，用七个杂交种和两个品种，即 Chandra Sankara (COD × WCT)、Chandra Laksha (LCT x COD)、VHC1 (ECT × MGD)、VHC-2 (ECT × MYD)、Kera Ganga (WCT × GBGD)、Laksha Ganga (LCT × GBGD)、Godavari Ganga (ECT x GBGD)、Kera Chandra (Double Century) 和 Chandra Kalpa 进行了试验。YSRHUHorticultural Research Station, Ambajipeta, Dr. B. R. Ambedkar Konaseema Dist、安得拉邦。试验于 2002 年开始，采用随机区组设计，分三个重复区组进行。六年（2015-2021 年）的汇总数据显示，戈达瓦里甘加（Godavari Ganga）的坚果产量/棕榈/年（144.40 坚果）明显最高，其次是 VHC-2（134.93 坚果）和 Kera Ganga（133.33 坚果）。戈达瓦里甘加的椰子产量最高，为 3.20 吨/公顷，产油量为 2.20 吨/公顷。在 VHC-2 和 Godavari Ganga 中记录到更多的嫩坚果水量（322.5 mL）。由于戈达瓦里甘加和 VHC-2 的坚果、干椰子和油产量较高，可推荐在安得拉邦种植。
{"title":"Performance of coconut hybrids and varieties in the East coast of Andhra Pradesh","authors":"A. Kireeti, G. Ramanandam, B. Bhagavan, N.B.V. Chalapathi Rao, B. Neeraja, V. G. Rao, B. Srinivasulu, B. A. Jerard","doi":"10.25081/jpc.2023.v51.i2.8666","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8666","url":null,"abstract":"Coconut (Cocos nucifera L.) is one of the plantation crops with more life span, so suitability of a variety or hybrid for particular region may improve the productivity of the coconut. An experiment was carried out with seven hybrids and two varieties viz. Chandra Sankara (COD × WCT), Chandra Laksha (LCT x COD), VHC1 (ECT × MGD), VHC-2 (ECT × MYD), Kera Ganga (WCT × GBGD), Laksha Ganga (LCT × GBGD), Godavari Ganga (ECT x GBGD), Kera Chandra (Double Century) and Chandra Kalpa at Dr.YSRHUHorticultural Research Station, Ambajipeta, Dr. B. R. Ambedkar Konaseema Dist., Andhra Pradesh. The experiment was initiated in 2002, in Randomized Block Design in three replicated blocks. The compiled data for six years (2015- 2021) revealed that, Godavari Ganga recorded significantly highest nut yield /palm/year (144.40 nuts) followed by VHC-2 (134.93 nuts) and Kera Ganga (133.33 nuts). Godavari Ganga recorded maximum copra yield of 3.20 t/ha and oil yield of 2.20 t/ha. Tender nut water quantity was recorded more (322.5 mL) in VHC-2 and Godavari Ganga. Due to its superior nut, copra and oil yield, Godavari Ganga and VHC-2 can be recommended for cultivation Andhra Pradesh.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139201178","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8667
C. Sudhalakshmi, P. Latha, H. P. Maheswarappa, Ravi Bhat
Coconut is an important horticultural crop of the state of Tamil Nadu spreading across an area of 4.44 lakh hectares. Coconut is a victim of the catastrophes of climate change events like high temperature, excessive or deficit rainfall and increased atmospheric CO2 concentration. Coconut plantations in the state are hit by several pests and diseases, some of which are lethal, fatal and are debilitating in nature. An analysis of Strength, Weakness, Opportunities and Threats (SWOT) for the prospects of coconut cultivation in the state revealed that edaphic and climatic factors, less labour requirement compared to other field crops of the state and access to technologies remain the great strength, while tropical cyclones hitting coastal districts of the state, failure of monsoon, wide fluctuations in copra price, lack of producer-centric market intelligence are the striking weakness for coconut cultivation. Improved varieties and hybrids with desired traits, establishment of processing industries, international cargo terminals to tap export market and crop insurance scheme in the event of climatic aberrations, remain the major opportunities while declining soil fertility, debilitating pests and dreadful diseases and poor scientific management owing to the fragmented land holdings are the major threats of coconut cultivation in the state of Tamil Nadu.
{"title":"Prospects of coconut cultivation in Tamil Nadu – A SWOT Analysis","authors":"C. Sudhalakshmi, P. Latha, H. P. Maheswarappa, Ravi Bhat","doi":"10.25081/jpc.2023.v51.i2.8667","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8667","url":null,"abstract":"Coconut is an important horticultural crop of the state of Tamil Nadu spreading across an area of 4.44 lakh hectares. Coconut is a victim of the catastrophes of climate change events like high temperature, excessive or deficit rainfall and increased atmospheric CO2 concentration. Coconut plantations in the state are hit by several pests and diseases, some of which are lethal, fatal and are debilitating in nature. An analysis of Strength, Weakness, Opportunities and Threats (SWOT) for the prospects of coconut cultivation in the state revealed that edaphic and climatic factors, less labour requirement compared to other field crops of the state and access to technologies remain the great strength, while tropical cyclones hitting coastal districts of the state, failure of monsoon, wide fluctuations in copra price, lack of producer-centric market intelligence are the striking weakness for coconut cultivation. Improved varieties and hybrids with desired traits, establishment of processing industries, international cargo terminals to tap export market and crop insurance scheme in the event of climatic aberrations, remain the major opportunities while declining soil fertility, debilitating pests and dreadful diseases and poor scientific management owing to the fragmented land holdings are the major threats of coconut cultivation in the state of Tamil Nadu.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199477","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8670
L. Gopianand, C. Kathirvelu
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{"title":"Influence of abiotic factors on the co-occurrence of rugose spiralling whitefly, Aleurodicus rugioperculatus Martin and Bondar's Nesting Whitefly, Paraleyrodes bondari Peracchi in coconut palms","authors":"L. Gopianand, C. Kathirvelu","doi":"10.25081/jpc.2023.v51.i2.8670","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8670","url":null,"abstract":"<jats:p>-</jats:p>","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139208772","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.7817
N. B. V. C. Rao, B. Ramani, B. V. K. Bhagvan, A. A. Sabana, M. K. Rajesh
This communication is the new report of the neotropical invasive Bondar's Nesting Whitefly (BNW) , Paraleyrodes bondari Peracchi (Hemiptera: Aleyrodidae)incidence in oil palm in India. A typical feature of BNW infestation is the presence of woolly wax nests on the abaxial surface of oil palm leaflets. The nesting whitefly population was observed to increase phenomenally on oil palm and within a year ie., from 2021 to 2022, a 100 per cent palm infestation was observed. During this period the intensity per palm increased by 24.49 per cent and per leaf increased by 63.28 per cent. Analysis of the partial mitochondrial cytochrome oxidase subunit 1 (CO1) sequences from adult specimens indicated 100% nucleotide identity with Bondar's Nesting Whitefly from coconut.
{"title":"New report on the invasive Bondar's Nesting Whitefly (Paraleyrodes bondari Peracchi) on oil palm in India","authors":"N. B. V. C. Rao, B. Ramani, B. V. K. Bhagvan, A. A. Sabana, M. K. Rajesh","doi":"10.25081/jpc.2023.v51.i2.7817","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.7817","url":null,"abstract":"This communication is the new report of the neotropical invasive Bondar's Nesting Whitefly (BNW) , Paraleyrodes bondari Peracchi (Hemiptera: Aleyrodidae)incidence in oil palm in India. A typical feature of BNW infestation is the presence of woolly wax nests on the abaxial surface of oil palm leaflets. The nesting whitefly population was observed to increase phenomenally on oil palm and within a year ie., from 2021 to 2022, a 100 per cent palm infestation was observed. During this period the intensity per palm increased by 24.49 per cent and per leaf increased by 63.28 per cent. Analysis of the partial mitochondrial cytochrome oxidase subunit 1 (CO1) sequences from adult specimens indicated 100% nucleotide identity with Bondar's Nesting Whitefly from coconut.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"93 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139204850","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}
Pub Date : 2023-11-30DOI: 10.25081/jpc.2023.v51.i2.8665
J. Jacob, C. Chitra, C. Anilkumar
Arenga wightii Griffith, an endemic palm, of Western Ghats and south and central Sahyadris having multiple uses is currently under threat due to habitat loss and over exploitation. Since seeds are the major propagules of this palm, seed study was carried out with a view to conserve this highly promising tree, in both ex-situ and in- situ conditions. The study included seed viability, germination, desiccation and dormancy breaking tests. The results of the study suggest desiccation, GA3/ acid treatment enhance germination, and dormancy observed is of both physiological and mechanical. The cost efficient means of germination induction is desiccation which could aid the farmers and common people in cultivating the species at large extent enabling reintroduction of the species.
{"title":"Dormancy breaking studies and seed germination in Arenga wightii Griffith","authors":"J. Jacob, C. Chitra, C. Anilkumar","doi":"10.25081/jpc.2023.v51.i2.8665","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i2.8665","url":null,"abstract":"Arenga wightii Griffith, an endemic palm, of Western Ghats and south and central Sahyadris having multiple uses is currently under threat due to habitat loss and over exploitation. Since seeds are the major propagules of this palm, seed study was carried out with a view to conserve this highly promising tree, in both ex-situ and in- situ conditions. The study included seed viability, germination, desiccation and dormancy breaking tests. The results of the study suggest desiccation, GA3/ acid treatment enhance germination, and dormancy observed is of both physiological and mechanical. The cost efficient means of germination induction is desiccation which could aid the farmers and common people in cultivating the species at large extent enabling reintroduction of the species.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199892","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}
Pub Date : 2023-10-20DOI: 10.25081/jpc.2023.v51.i1.8470
J. Devasia, B. Muniswamy, P. Jingade, A. K. Huded, M. K. Mishra
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{"title":"Influence of ZnO and TiO2 nanoparticles in the establishment and growth of in vitro callus cultures of coffee","authors":"J. Devasia, B. Muniswamy, P. Jingade, A. K. Huded, M. K. Mishra","doi":"10.25081/jpc.2023.v51.i1.8470","DOIUrl":"https://doi.org/10.25081/jpc.2023.v51.i1.8470","url":null,"abstract":"<jats:p>-</jats:p>","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139315966","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}
Pub Date : 2023-10-20DOI: 10.25081/jpc.2023.v51.i1.8188
Soumya S. Dharan, K. Sabu
Cardamom is an economically important spice, valued for its multiple utility from culinary to medical purposes. The plant is highly susceptible to both abiotic and biotic stresses. Despite the fact that several studies focusing on stress in cardamom have been conducted; a molecular analysis at the cellular level has not been reported. This study highlights the molecular response of homogenous population of cardamom cell suspension following the temperature and drought stresses for a short period of time (20 mins). Temperature stress at 30, 35, and 40°C caused a significant increase in the transient expression of genes, sHSP 17.8 and sHSP 17.9, which are molecular chaperones involved in protein folding coping with the heat stress response of plants. Drought stress with various concentrations of PEG 6000 has demonstrated only a little increase in the expression of transcription factors, WRKY 35 and WRKY 71. The study implies that sHSP 17.8 and sHSP 17.9 play a crucial role during heat stress, which is a major limiting factor for the cultivation of cardamom in lower altitudes where atmospheric temperature is usually high. But WRKY 35 and WRKY 71 genes are found not to have a high impact at the cellular level in response to drought stress in cardamom when it is exposed to a brief duration of drought. Understanding the molecular mechanism underlying abiotic stress response in cardamom will aid in developing elite varieties adaptable to lower altitudes and to cope with the frequent climatic variations.
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