Pub Date : 2022-01-01DOI: 10.19045/BSPAB.2022.110017
Javaria Sherani
Ber (Zizyphus maritiana Lamk) is an important tropical fruit. Ber fruit is known as “fruit of poor” because of low price in the market. This work was planned to evaluate Aloe vera gel and olive oil edible coating to enhance its shelf life and minimize post-harvest losses. The treatments included were T1= (control), T2= Olive oil (2%), T3= Olive oil (2.5%), T4= Olive oil (3%), T5 = Aloe vera gel (2%), T6 = Aloe vera gel (2.5%) and T7= Aloe vera gel (3%). Physico-chemical parameters of fruits were analyzed and recorded 12 day of storage. The study revealed that both olive oil and Aloe vera gel coatings were effective in maintaining quality of Ber fruit during storage period of 12 days. Minimum physiological weight loss, lesser loss in acid contents were observed in Aloe vera gel treated fruits along with maximum color retention compared to uncoated fruits. Coatings delayed ripening. Ascorbic acid loss and decay percentage were reduced by using different concentrations of olive oil and Aloe vera gel. Based on results deduced from the present study, it is concluded that application of Aloe vera gel was at par with olive oil coating but olive oil 3% and Aloe vera 3% proved best so, these coatings could be applied to enhance fruit shelf life and quality.
{"title":"Application of Aloe vera gel and olive oil coatings to enhance fruit quality and shelf-life of ber (Ziziphus mauritiana L.)","authors":"Javaria Sherani","doi":"10.19045/BSPAB.2022.110017","DOIUrl":"https://doi.org/10.19045/BSPAB.2022.110017","url":null,"abstract":"Ber (Zizyphus maritiana Lamk) is an important tropical fruit. Ber fruit is known as “fruit of poor” because of low price in the market. This work was planned to evaluate Aloe vera gel and olive oil edible coating to enhance its shelf life and minimize post-harvest losses. The treatments included were T1= (control), T2= Olive oil (2%), T3= Olive oil (2.5%), T4= Olive oil (3%), T5 = Aloe vera gel (2%), T6 = Aloe vera gel (2.5%) and T7= Aloe vera gel (3%). Physico-chemical parameters of fruits were analyzed and recorded 12 day of storage. The study revealed that both olive oil and Aloe vera gel coatings were effective in maintaining quality of Ber fruit during storage period of 12 days. Minimum physiological weight loss, lesser loss in acid contents were observed in Aloe vera gel treated fruits along with maximum color retention compared to uncoated fruits. Coatings delayed ripening. Ascorbic acid loss and decay percentage were reduced by using different concentrations of olive oil and Aloe vera gel. Based on results deduced from the present study, it is concluded that application of Aloe vera gel was at par with olive oil coating but olive oil 3% and Aloe vera 3% proved best so, these coatings could be applied to enhance fruit shelf life and quality.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"73 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78750622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.19045/BSPAB.2022-110002
Zunaira Noreen
The pandemic of COVID -19 has brought many changes to wildlife globally positively or negatively. During lock downs the abundance of many wild species has increased due to decease in human disturbance in area. This study is designed to compare two landfills situated 22 km apart in the Gujranwala, Punjab in terms of avifauna diversity, abundance and foraging behavior during COVID-19 pandemic. The field observations using the total count method of population census revealed the abundance of contrasting avian species at both sites with a very low values of the diversity index (H= 1.146 Chianwali & H=1.697 Gondalawala ) and species evenness (E= 0.423 Chianwali & E= 0.587 Gondalawala). A large variation in bird’s population was recorded at both landfills, i.e. N > 17,300 at one landfill (Chianwali) and N> 26,200 at the other (Gondalawala). Time dependent variation in population was also observed. Cattle egret was dominant species (~75% of population) at the Chianwali landfill site while the Black kite (~55% of population) was the dominant species at Gondalawala landfill. House crow was the second dominant species at both sites. Birds were grouped into categories based on ecological behaviors such as dominance, opportunists, insectivory etc. The study finds that each landfill has its own specific character depending upon the geographical location, accessibility of birds to landfills, and management practices such as presence of boundary wall and artificial lights. Moreover, it also finds that COVID -19 lockdown provided an opportunity to wild avian species to exploit human rehabilitated areas abundantly where there presence was very few because of dominance of human beings and their activities.
{"title":"Hegemony of two avian species: Black kites and Cattle egrets on two distant landfills during COVID-19 pandemic in Gujranwala, Pakistan","authors":"Zunaira Noreen","doi":"10.19045/BSPAB.2022-110002","DOIUrl":"https://doi.org/10.19045/BSPAB.2022-110002","url":null,"abstract":"The pandemic of COVID -19 has brought many changes to wildlife globally positively or negatively. During lock downs the abundance of many wild species has increased due to decease in human disturbance in area. This study is designed to compare two landfills situated 22 km apart in the Gujranwala, Punjab in terms of avifauna diversity, abundance and foraging behavior during COVID-19 pandemic. The field observations using the total count method of population census revealed the abundance of contrasting avian species at both sites with a very low values of the diversity index (H= 1.146 Chianwali & H=1.697 Gondalawala ) and species evenness (E= 0.423 Chianwali & E= 0.587 Gondalawala). A large variation in bird’s population was recorded at both landfills, i.e. N > 17,300 at one landfill (Chianwali) and N> 26,200 at the other (Gondalawala). Time dependent variation in population was also observed. Cattle egret was dominant species (~75% of population) at the Chianwali landfill site while the Black kite (~55% of population) was the dominant species at Gondalawala landfill. House crow was the second dominant species at both sites. Birds were grouped into categories based on ecological behaviors such as dominance, opportunists, insectivory etc. The study finds that each landfill has its own specific character depending upon the geographical location, accessibility of birds to landfills, and management practices such as presence of boundary wall and artificial lights. Moreover, it also finds that COVID -19 lockdown provided an opportunity to wild avian species to exploit human rehabilitated areas abundantly where there presence was very few because of dominance of human beings and their activities.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"57 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76623750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.01667
D. P. Sousa, Julio Cesar Vieira Frare, V. Farias, H. Nunes, Maurício Souza Martins, Ana Flavia Trindade de Lima, Lucas Belém Tavares, D. Costa, M. Lima, Cláudio José Reis de Carvalho, P. Souza
Abstract The objective of this work was to deter mine the base temperatures, thermal time requirements, and length of the main reproductive growth stages of acai palm (Euterpe oleracea) in the northeast of the state of Pará, in eastern Amazon, Brazil. The experiment was carried out from 2017 to 2019 in a 10 ha acai plantation, using the time-series analysis. Plant phenology was monitored weekly, and local weather conditions were monitored daily. The lower and upper base temperatures were of 12.92 and 32.46°C, respectively, for pre-flowering; 13.50 and 32.23°C for flowering; 12.14 and 32.55°C for green fruit stage; 11.64 and 32.78°C for fruit color-changing stage; and 11.23 and 32.94°C for maturation. The thermal time requirement and the average cycle length for the ideal harvest time of acai palm were 3,893.15 degree-days and 283 days, respectively. The thermal time requirement and the duration of the reproductive growth stage for acai palm are influenced by the period of the year and the variability of air temperature, which, when high, reduces the cycle of the crop, and when mild, increases it.
{"title":"Acai palm base temperatures and thermal time requirements in eastern Amazon","authors":"D. P. Sousa, Julio Cesar Vieira Frare, V. Farias, H. Nunes, Maurício Souza Martins, Ana Flavia Trindade de Lima, Lucas Belém Tavares, D. Costa, M. Lima, Cláudio José Reis de Carvalho, P. Souza","doi":"10.1590/s1678-3921.pab2022.v57.01667","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.01667","url":null,"abstract":"Abstract The objective of this work was to deter mine the base temperatures, thermal time requirements, and length of the main reproductive growth stages of acai palm (Euterpe oleracea) in the northeast of the state of Pará, in eastern Amazon, Brazil. The experiment was carried out from 2017 to 2019 in a 10 ha acai plantation, using the time-series analysis. Plant phenology was monitored weekly, and local weather conditions were monitored daily. The lower and upper base temperatures were of 12.92 and 32.46°C, respectively, for pre-flowering; 13.50 and 32.23°C for flowering; 12.14 and 32.55°C for green fruit stage; 11.64 and 32.78°C for fruit color-changing stage; and 11.23 and 32.94°C for maturation. The thermal time requirement and the average cycle length for the ideal harvest time of acai palm were 3,893.15 degree-days and 283 days, respectively. The thermal time requirement and the duration of the reproductive growth stage for acai palm are influenced by the period of the year and the variability of air temperature, which, when high, reduces the cycle of the crop, and when mild, increases it.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67603598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.02392
G. S. Wenneck, R. Saath, Roberto Rezende
Abstract The objective of this work was to determine the accumulation of silicon in the plant components of cauliflower (Brassica oleracea var. botrytis) grown with different levels of water replacement and rates of Si. The experimental design was a randomized complete block with three water replacement conditions (40, 70, and 100% evapotranspiration), four Si rates (0, 50, 100, and 150 kg ha-1), and four replicates. Daily evapotranspiration was determined with constant water table lysimeters, with water replacement by a drip system. As a source of Si, silicon oxide was applied three times in the crop cycle - at the initial, intermediate, and final development stages of the plant. At the end of the cycle, samples of plant tissue (root, stem, leaves, and inflorescence) and soil were collected to determine Si by spectrometry. The Si content in the soil was not influenced by water replacement, only by silicate fertilization. The silicon applied to the soil increased the content of the element in the plant components, especially in the roots. Water replacement influences the accumulation of Si in cauliflower plant tissues, with lower amounts of the element under water deficit conditions.
摘要本研究的目的是测定不同水分置换水平和硅含量下花椰菜(Brassica oleracea var. botrytis)植株各组分硅的积累情况。试验设计为随机完全区组，设3种水分置换条件(40%、70%和100%蒸散)，4种Si速率(0、50、100和150 kg ha-1)， 4个重复。每日蒸散量用恒定地下水位溶渗仪测定，用滴灌系统换水。作为硅的来源，氧化硅在作物周期中被施用三次-在植物的初始，中间和最终发育阶段。在循环结束时，收集植物组织(根、茎、叶和花序)和土壤样品，用光谱法测定Si。土壤中硅含量不受水分置换的影响，只受硅酸盐施肥的影响。土壤施硅增加了植物各组成部分，尤其是根部的元素含量。水分的补充影响了花椰菜组织中硅的积累，在水分不足的条件下，硅的含量较低。
{"title":"Silicon accumulation in cauliflower grown in a protected environment with different water availability conditions","authors":"G. S. Wenneck, R. Saath, Roberto Rezende","doi":"10.1590/s1678-3921.pab2022.v57.02392","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02392","url":null,"abstract":"Abstract The objective of this work was to determine the accumulation of silicon in the plant components of cauliflower (Brassica oleracea var. botrytis) grown with different levels of water replacement and rates of Si. The experimental design was a randomized complete block with three water replacement conditions (40, 70, and 100% evapotranspiration), four Si rates (0, 50, 100, and 150 kg ha-1), and four replicates. Daily evapotranspiration was determined with constant water table lysimeters, with water replacement by a drip system. As a source of Si, silicon oxide was applied three times in the crop cycle - at the initial, intermediate, and final development stages of the plant. At the end of the cycle, samples of plant tissue (root, stem, leaves, and inflorescence) and soil were collected to determine Si by spectrometry. The Si content in the soil was not influenced by water replacement, only by silicate fertilization. The silicon applied to the soil increased the content of the element in the plant components, especially in the roots. Water replacement influences the accumulation of Si in cauliflower plant tissues, with lower amounts of the element under water deficit conditions.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67604137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.02603
Marcelo Augusto Vieira Santos, V. C. A. Andrade Júnior, A. G. Guimarães, O. G. Brito, Antônio Jorge Viegas Taula, Rogers Augusto Costa, João Pedro Rocha Alves, Natália Oliveira Silva, F. V. Resende
Abstract The objective of this work was to evaluate the phenotypic correlations between agronomic characters of garlic (Allium sativum) and to carry out the path analysis, using commercial bulb yield as the main character. The experiment was conducted under field conditions in two harvests (2018 and 2019) in the municipality of Diamantina, in the state of Minas Gerais, Brazil. A total of 13 garlic genotypes were evaluated, of which 11 were experimental and 2 were commercial cultivars. The experimental design used was randomized complete blocks with four replicates. Characters related to plant biometry and bulb yield were evaluated. The phenotypic correlations and the path analysis of the studied characters were carried out. The phenotypic correlations that showed significant positive effects occurred between commercial bulb yield and plant height, bulb diameter, number of commercial bulbs, mean total bulb mass, mean commercial bulb mass, total bulb yield, and number of bulbils per bulb. However, only number of commercial bulbs and bulb diameter had significant effects (direct and indirect) on commercial bulb yield. Therefore, in genotype genetic breeding programs in the studied region, selection should seek a larger diameter of bulbs and a higher number of commercial bulbs to increase commercial yield.
{"title":"Correlations between agronomic characters in garlic","authors":"Marcelo Augusto Vieira Santos, V. C. A. Andrade Júnior, A. G. Guimarães, O. G. Brito, Antônio Jorge Viegas Taula, Rogers Augusto Costa, João Pedro Rocha Alves, Natália Oliveira Silva, F. V. Resende","doi":"10.1590/s1678-3921.pab2022.v57.02603","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02603","url":null,"abstract":"Abstract The objective of this work was to evaluate the phenotypic correlations between agronomic characters of garlic (Allium sativum) and to carry out the path analysis, using commercial bulb yield as the main character. The experiment was conducted under field conditions in two harvests (2018 and 2019) in the municipality of Diamantina, in the state of Minas Gerais, Brazil. A total of 13 garlic genotypes were evaluated, of which 11 were experimental and 2 were commercial cultivars. The experimental design used was randomized complete blocks with four replicates. Characters related to plant biometry and bulb yield were evaluated. The phenotypic correlations and the path analysis of the studied characters were carried out. The phenotypic correlations that showed significant positive effects occurred between commercial bulb yield and plant height, bulb diameter, number of commercial bulbs, mean total bulb mass, mean commercial bulb mass, total bulb yield, and number of bulbils per bulb. However, only number of commercial bulbs and bulb diameter had significant effects (direct and indirect) on commercial bulb yield. Therefore, in genotype genetic breeding programs in the studied region, selection should seek a larger diameter of bulbs and a higher number of commercial bulbs to increase commercial yield.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67605858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.02667
R. A. L. S. Rezende, F. A. Rodrigues, V. D. O. Ramos, A. D. Martins, M. Pasqual, Roberto Alves Braga Júnior, J. M. Luz, J. Dória
Abstract The objective of this work was to investigate the effect of plant growth regulators (PGR) on the induction of calli from cotyledons of Enterolobium contortisiliquum grown in vitro, as well as to evaluate the inhibitory activity of trypsin in these calli. Cotyledons of E. contortisiliquum were cultivated in culture medium supplemented with dichlorophenoxyacetic acid (2,4-D), picloram (PIC), kinetin (KIN), and 6-benzylaminopurine (BAP). Callus mass, inhibitory activity of trypsin, morphogenetic and cytochemical observations, and biological activity were measured after 60 days. The Pareto diagram showed that only 0.5 mg L-1 PIC influenced the increase of fresh mass, whereas 0.5 mg L-1 BAP influenced dry mass. The principal component analysis plot showed the formation of two clear clusters. The inhibitory activity of trypsin is achieved at a higher intensity in the treatment with 0.5 mg L-1 2,4-D + 2.0 mg L-1 PIC + 0.5 mg L-1 KIN + 2.0 mg L-1 BAP. The combination of PGR at different rates causes an intense callus formation. Low concentrations of PGR result in a higher fresh mass, dry mass, and biological activity. The use of PGR is efficient in obtaining E. contortisiliquum calli with a satisfactory inhibitory activity of trypsin.
{"title":"Trypsin inhibitor in Enterolobium contortisiliquum calli grown in the presence of plant growth regulators","authors":"R. A. L. S. Rezende, F. A. Rodrigues, V. D. O. Ramos, A. D. Martins, M. Pasqual, Roberto Alves Braga Júnior, J. M. Luz, J. Dória","doi":"10.1590/s1678-3921.pab2022.v57.02667","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02667","url":null,"abstract":"Abstract The objective of this work was to investigate the effect of plant growth regulators (PGR) on the induction of calli from cotyledons of Enterolobium contortisiliquum grown in vitro, as well as to evaluate the inhibitory activity of trypsin in these calli. Cotyledons of E. contortisiliquum were cultivated in culture medium supplemented with dichlorophenoxyacetic acid (2,4-D), picloram (PIC), kinetin (KIN), and 6-benzylaminopurine (BAP). Callus mass, inhibitory activity of trypsin, morphogenetic and cytochemical observations, and biological activity were measured after 60 days. The Pareto diagram showed that only 0.5 mg L-1 PIC influenced the increase of fresh mass, whereas 0.5 mg L-1 BAP influenced dry mass. The principal component analysis plot showed the formation of two clear clusters. The inhibitory activity of trypsin is achieved at a higher intensity in the treatment with 0.5 mg L-1 2,4-D + 2.0 mg L-1 PIC + 0.5 mg L-1 KIN + 2.0 mg L-1 BAP. The combination of PGR at different rates causes an intense callus formation. Low concentrations of PGR result in a higher fresh mass, dry mass, and biological activity. The use of PGR is efficient in obtaining E. contortisiliquum calli with a satisfactory inhibitory activity of trypsin.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67606399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.02441
M. M. Duarte, Mônica Moreno Gabira, J. Tomasi, E. Amano, A. C. Nogueira, I. Wendling
Abstract The objective of this work was to evaluate the bioactive compounds and foliar anatomy of yerba mate (Ilex paraguariensis) morphotypes. The antioxidant capacity, total phenolic compounds, methylxanthines, and caffeoylquinic acids were determined from the aqueous extract of leaves of the following yerba mate morphotypes: “sassafras”, dark green, dull green, gray, and “peludinha”. Light microscopy and scanning electron microscopy were used to observe the anatomical differentiations. The dark-green morphotype showed the highest contents of caffeine (20.4 mg g-1), differing significantly only from the “peludinha” morphotype (8.8 mg g-1). All morphotypes showed similar and high antioxidant activity (886.0 and 588.1 μmol Trolox equivalent antioxidant activity per gram of sample for ABTS and DPPH, respectively), as well as high total phenolic compounds content (73.9 mg gallic acid equivalent per gram of sample). Although the anatomy of the leaf mesophyll is similar, the wax deposition and cuticle striation configuration on the adaxial surface differ between all five morphotypes.
{"title":"Bioactive compounds and leaf anatomy of yerba mate morphotypes","authors":"M. M. Duarte, Mônica Moreno Gabira, J. Tomasi, E. Amano, A. C. Nogueira, I. Wendling","doi":"10.1590/s1678-3921.pab2022.v57.02441","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02441","url":null,"abstract":"Abstract The objective of this work was to evaluate the bioactive compounds and foliar anatomy of yerba mate (Ilex paraguariensis) morphotypes. The antioxidant capacity, total phenolic compounds, methylxanthines, and caffeoylquinic acids were determined from the aqueous extract of leaves of the following yerba mate morphotypes: “sassafras”, dark green, dull green, gray, and “peludinha”. Light microscopy and scanning electron microscopy were used to observe the anatomical differentiations. The dark-green morphotype showed the highest contents of caffeine (20.4 mg g-1), differing significantly only from the “peludinha” morphotype (8.8 mg g-1). All morphotypes showed similar and high antioxidant activity (886.0 and 588.1 μmol Trolox equivalent antioxidant activity per gram of sample for ABTS and DPPH, respectively), as well as high total phenolic compounds content (73.9 mg gallic acid equivalent per gram of sample). Although the anatomy of the leaf mesophyll is similar, the wax deposition and cuticle striation configuration on the adaxial surface differ between all five morphotypes.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67604903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.02474
Rafael de Andrade Carvalho Rosseti, R. Amorim, L. A. D. L. D. Raimo, G. N. Torres, L. Silva, Ianna Marília Alves
Abstract The objective of this work was to determine pedotransfer functions to predict water retention at the -33 and -1500 kPa matric potentials of soils under Cerrado, in the south of the state of Mato Grosso, Brazil. Samples (n=156) were collected for model calibration (n=124) and validation (n=32). A stepwise multiple regression was used to determine pedotransfer functions. Willmott’s index of agreement, root-mean-square error, Pearson’s correlation coefficient, and the confidence index were used to evaluate the performance of the functions and to compare them with those described in the literature. The most efficient variables to estimate water retention were: microporosity, total sand, and clay at -33 kPa; and total sand, silt and clay at -1500 kPa. The regional pedotransfer functions explained more than 94% of water retention variance in the studied soils. The reliability of the functions to predict water retention increased, at -33 kPa, with the use of the structural property microporosity and, at -1500 kPa, with the use of granulometric parameters. The studied regional pedotransfer functions predict water retention at the -33 and -1500 kPa matric potentials of soils under Cerrado, in southern Mato Grosso, better than the functions described in the literature.
{"title":"Pedotransfer functions for predicting soil-water retention under Brazilian Cerrado","authors":"Rafael de Andrade Carvalho Rosseti, R. Amorim, L. A. D. L. D. Raimo, G. N. Torres, L. Silva, Ianna Marília Alves","doi":"10.1590/s1678-3921.pab2022.v57.02474","DOIUrl":"https://doi.org/10.1590/s1678-3921.pab2022.v57.02474","url":null,"abstract":"Abstract The objective of this work was to determine pedotransfer functions to predict water retention at the -33 and -1500 kPa matric potentials of soils under Cerrado, in the south of the state of Mato Grosso, Brazil. Samples (n=156) were collected for model calibration (n=124) and validation (n=32). A stepwise multiple regression was used to determine pedotransfer functions. Willmott’s index of agreement, root-mean-square error, Pearson’s correlation coefficient, and the confidence index were used to evaluate the performance of the functions and to compare them with those described in the literature. The most efficient variables to estimate water retention were: microporosity, total sand, and clay at -33 kPa; and total sand, silt and clay at -1500 kPa. The regional pedotransfer functions explained more than 94% of water retention variance in the studied soils. The reliability of the functions to predict water retention increased, at -33 kPa, with the use of the structural property microporosity and, at -1500 kPa, with the use of granulometric parameters. The studied regional pedotransfer functions predict water retention at the -33 and -1500 kPa matric potentials of soils under Cerrado, in southern Mato Grosso, better than the functions described in the literature.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67605648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.1590/s1678-3921.pab2022.v57.02843
Suélen Braga de Andrade Kaltbach, Angélica Bender, Pedro Kaltbach, M. Malgarim, F. Herter, V. B. Costa, A. L. D. Souza
Abstract The objective of this work was to evaluate the physicochemical composition of juices from the 'Bordô' and 'BRS Cora' grapes grown in an organic production system in the Serra do Sudeste region, in Southern Brazil, as well as to compare the cultivar results with data from other producing regions and with the requirements of the Brazilian regulation for whole grape juice. The used grapes came from a commercial vineyard, especifically from the 2016-2017, 2017-2018, and 2018-2019 production cycles. The juices were prepared by the steam drag method and evaluated for their physicochemical composition. The fruit showed suitable values for the parameters necessary for grape juice production. In general, the juices showed bioactive compounds contents similar to those obtained in other regions. The 'Bordô' juices evaluated in the three production cycles showed significant differences for several variables, which were attributed to the influence of weather on grape maturity. The juices of 'BRS Cora' showed high-consistency qualitative results even under the very distinct meteorological conditions of the three production cycles. The juices comply with the current Brazilian regulation for whole grape juice, except for soluble solids, which are severely lowered by the used extraction technique.
本研究的目的是评估巴西南部Serra do Sudeste地区有机生产系统中种植的“Bordô”和“BRS Cora”葡萄的果汁的物理化学成分，并将栽培结果与其他产区的数据进行比较，并与巴西全葡萄汁法规的要求进行比较。使用的葡萄来自一个商业葡萄园，特别是2016-2017、2017-2018和2018-2019生产周期的葡萄。采用蒸汽拖曳法制备果汁，并对其理化成分进行了评价。该果实显示出适合葡萄汁生产所需参数的值。总的来说，这些果汁显示的生物活性化合物含量与在其他地区获得的相似。在三个生产周期中评估的“Bordô”果汁在几个变量上显示出显著差异，这归因于天气对葡萄成熟度的影响。在三个生产周期的不同气象条件下，“BRS Cora”果汁也表现出高一致性的定性结果。这些果汁符合巴西目前对全葡萄汁的规定，除了可溶性固体物质，这些物质通过使用提取技术大大降低了。
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