Journal of Plantation Crops最新文献

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Impact of removal of rubber plantations for urbanization on CO2 mitigating capacity by the loss of carbon sink in Kerala state, India 印度喀拉拉邦因城市化而拆除橡胶园对碳汇损失对二氧化碳减缓能力的影响
Journal of Plantation Crops Pub Date : 2022-12-30 DOI: 10.25081/jpc.2022.v50.i3.8232
K. Ambily, A. Ulaganathan, G. C. Sathisha
{"title":"Impact of removal of rubber plantations for urbanization on CO2 mitigating capacity by the loss of carbon sink in Kerala state, India","authors":"K. Ambily, A. Ulaganathan, G. C. Sathisha","doi":"10.25081/jpc.2022.v50.i3.8232","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i3.8232","url":null,"abstract":"Mitigating climate change and global warming through carbon sequestration by tree ecosystems is of prime importance since they are cost-effective, environmentally friendly and ecologically sustainable. Urbanization is a part of development, and rubber plantations are usually removed for this purpose, especially in Kerala, the southern state of India. Besides latex, the economic produce, and the associated income, the rubber tree is a fairly good sink for carbon in its biomass, with an average carbon content of 42 per cent and substantial carbon stock in the soil. In the present study, an account of total carbon loss by the removal of rubber plantation for urbanization and developmental activities are given. The present popular clone (RRII 105) existing in major share (85%) of the total rubber cultivation in India accounts for carbon sink loss 57 t ha-1, 57.5 t ha-1, 43.2 t ha-1 for 23 years and 148 t ha-1, 75 t ha-1 and 62.1 t ha-1 for 30 years from biomass, litterfall and sheet rubber respectively. The recent clones RRII 414, RRII 429 and RRII 417 have higher growth rates and higher biomass (44-50 per cent) carbon sink loss compared to the existing popular clone RRII 105. The carbon sink loss in the form of stored carbon in soil is 56.5, with a soil carbon content between 1.2 to 2 per cent. Due to the growth variation in diverse environments with extreme climatic conditions, the clones recorded differences in carbon stock and carbon sink loss. The central region of Kerala showed a higher loss, and a lower loss was in the drought-affected northern region than the southern region. The total carbon sink losses for 23 and 30 years were 214.2 and 341.5 t ha-1, respectively. This study points out that the serious carbon sink loss due to the removal of rubber plantations results in disturbing the self-sustained, carbon-friendly and economically sound perennial rubber ecosystem. Vegetation having higher C-sequestration potential and trees with higher lignin content is essential to increase carbon capture for mitigating the impact of the removal of plantations. From the present study, it is clear that the removal of rubber plantations is affecting the carbon sink loss, thereby the CO2 mitigating capacity, and is a serious matter of concern.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41858566","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}
引用次数: 0
Farmer-friendly technology for mass production of Trichoderma harzianum (CPTD28) 哈茨木霉(CPTD28)的农民友好型大规模生产技术
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7985
V. Prathibha, Daliyamol, M. Monisha, V. Hegde
{"title":"Farmer-friendly technology for mass production of Trichoderma harzianum (CPTD28)","authors":"V. Prathibha, Daliyamol, M. Monisha, V. Hegde","doi":"10.25081/jpc.2022.v50.i2.7985","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7985","url":null,"abstract":"Corresponding Author: prathibhacpcri@gmail.com The complexity and intensity of crop diseases have increased with the advent of intensive agriculture. To control these diseases, using an indiscriminate amount of pesticides leads to unforeseen problems like environmental pollution and health hazards worldwide. Now the scenario has changed since technologies are available for quality crop production with increasing awareness of alternative plant protection options such as the use of biocontrol agents. Management of plant diseases using biocontrol agents is increasingly becoming popular, as it has an advantage over chemical pesticides that it doesn’t cause any harmful effects to the environment. Trichoderma spp. is one of the most extensively used bioagents, well known for their ability to induce mycoparasitism, producing several secondary metabolites inducing resistance, both local and systemic, in plants against invading pathogens and improving nutrient use efficiency (Elad et al., 1980; Harman et al., 2004; Nidhina et al., 2016). The success of biological control mainly relies on bio-efficacy, shelf life, easy availability of costeffective substrates and simple preparation procedure and delivery system. An appropriate medium for mass production is essential for the large-scale application of bio-control agents in the field. Different formulations of Trichoderma were developed (lignite, lignite and fly ash-based powder formulation, and talc powder) for seed treatment with viability up to nine months at storage at 24 °C (Jayaraj et al., 2006). Substrates such as coir pith, vermiculite and neem cake were suggested for mass production of Trichoderma (Mustaf et al., 2009; Prathibha et al., 2015). Conventionally used costly raw materials, sophisticated laboratory facilities for commercial production of biocontrol agents, and the short shelf life of the products are the major limitations behind the restricted use. Developing a feasible and effective biocontrol agent using locally available agricultural waste is an important component of biocontrol programme and effective utilization of agricultural waste. The arecanut leaf sheath is an easily and freely available agricultural waste in arecanut gardens and is also available as a byproduct from plate and bowl production units. The arecanut leaf sheaths can be exploited as a medium for multiplication and transferring the rapidly multiplied biocontrol agents to the soil system. Hence, attempts were made to develop an easy, costeffective and farmer-friendly technology for mass production of a potential native isolate of Trichoderma harzianum (CPTD 28) using an areca leaf sheath with a higher population and extended shelf life.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48102081","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}
引用次数: 0
Influence of different storage temperatures and packing material in extending shelf life and quality attributes of palmyrah (Borassus flabellifer L.) neera 不同贮藏温度和包装材料对延长掌叶药材保质期及品质性状的影响
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7982
M. C. S. Rao, D. V. Swami, P. Ashok, D. Suneetha, R. Sujatha, V. Sekhar
{"title":"Influence of different storage temperatures and packing material in extending shelf life and quality attributes of palmyrah (Borassus flabellifer L.) neera","authors":"M. C. S. Rao, D. V. Swami, P. Ashok, D. Suneetha, R. Sujatha, V. Sekhar","doi":"10.25081/jpc.2022.v50.i2.7982","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7982","url":null,"abstract":"Palmyrah neera (inflorescence sap) is susceptible to natural fermentation at ambient temperature within a few hours of extraction due to enzymatic and microbial activity. Once fermented, neera becomes toddy which is unsuitable as a health drink or as a value-added product. Therefore, a study was carried out to investigate the influence of different packing materials and storage conditions on the shelf life and to keep the quality of palmyrah neera. The experiment was conducted in a completely randomised factorial design with two factors at unequal levels replicated thrice. HDPE 50 micron pouch (P1), PET bottle (P2) and glass bottle (P3) and cold storage at 2 oC (S1), cold storage at 4 oC (S2) and refrigerated storage (8-10 oC) (S3) were the packing material and storage conditions respectively used during experimentation. Physio-chemical properties viz., total soluble solids, pH and reducing sugars showed an increasing trend up to the 4th week of storage. At the same time, phenols, titrable acidity and alcohol content increased up to the 6th week of storage. Maximum total soluble solids (10.80 oBrix), reducing sugars (5.76%), minimum phenolic content (0.323 mg) and titrable acidity (1.116%) were recorded when palmyrah neera was packed in HDPE 50 micron pouch, whereas the maximum total soluble solids (10.83oBrix), reducing sugars (5.75%), minimum phenolic content (0.322 mg) and titrable acidity (1.14%) were recorded when palmyrah neera was stored at 2 oC. Among the different packing material and storage conditions, HDPE 50 micron and storage at 2 oC was effective in extending the shelf life and quality attributes of palmyrah neera.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45847821","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}
引用次数: 0
Molecular characterisation and structural assessment of an RXLR effector from Phytophthora palmivora, the coconut bud rot pathogen 椰子芽腐病病原棕榈疫霉RXLR效应子的分子表征和结构评估
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7984
K. Gangaraj, M. K. Rajesh
{"title":"Molecular characterisation and structural assessment of an RXLR effector from Phytophthora palmivora, the coconut bud rot pathogen","authors":"K. Gangaraj, M. K. Rajesh","doi":"10.25081/jpc.2022.v50.i2.7984","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7984","url":null,"abstract":"Phytophthora species are phytopathogenic oomycetes that damage a wide variety of crops. Phytophthora delivers effectors, which are secretory proteins, into the host cells. Effectors promote infection by reprogramming the host cellular machinery and are key determinants of oomycete virulence. The major class of Phytophthora effector proteins contains the RXLR motif. In this study, we have carried out the molecular and structural characterisation of an RXLR effector (RXLR6744) from a virulent P. palmivora isolated from bud rot disease-affected coconut palm. The open reading frame (ORF) of the RXLR6744, amplified using RT-PCR, had a length of 411 bp. The gene was found to encode a predicted protein of 136 amino acids and had a molecular weight of 15.52 kDa. Phylogenetic analysis of the amino acid sequence revealed that it was closely related to RXLR proteins from P. palmivora (causing black pod disease in cocoa) and related species P. megakarya. Topology analysis revealed that the protein was composed of six α-helices. The structural prediction was undertaken by computer-aided homology modelling. From the Ramachandran plot analysis, it could be observed that the majority (96.3%) of amino acids were present in the preferred region, 3.7 per cent of amino acid residues were present in the allowed region, and no residues were observed in the disallowed region. The structure showed an average quality of 94.4 per cent, indicating it to be a high-quality structure. This study provides the detailed characterisation of an RXLR effector from P. palmivora. It will aid the elucidation of its role in pathogenesis and facilitate further refined investigations of the structure/function relationships of oomycete effectors.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43691811","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}
引用次数: 0
Survey for incidence of coffee white stem borer, Xylotrechus quadripes (Chevrolet) on robusta coffee (Coffea canephora Pierre ex A. Froehner) plantations at Kodagu region of Karnataka state, India 印度卡纳塔克邦Kodagu地区罗布斯塔咖啡(Coffea canephora Pierre ex A.Froehner)种植园中咖啡白茎蛀虫Xylotrechus quadripes(雪佛兰)的发病率调查
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7978
B.V. Ranjeeth Kumar, C. Kathrivelu, Kencharaddi
{"title":"Survey for incidence of coffee white stem borer, Xylotrechus quadripes (Chevrolet) on robusta coffee (Coffea canephora Pierre ex A. Froehner) plantations at Kodagu region of Karnataka state, India","authors":"B.V. Ranjeeth Kumar, C. Kathrivelu, Kencharaddi","doi":"10.25081/jpc.2022.v50.i2.7978","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7978","url":null,"abstract":"Coffee is an important commercial crop attacked by various insect pests. Among them, coffee white stem borer (CWSB), Xylotrechus quadripes (Coleoptera: Cerambycidae), is the most serious and economically important pest of arabica coffee. The incidence of CWSB has been noticed in arabica coffee, whereas the other commercial variety, viz., robusta, has been tolerant against this pest so far. Of late, the incidence of CWSB is reported regularly in robusta plantations in the Kodagu region of Karnataka State, India. To understand the extent of CWSB incidence in robusta coffee, a systematic survey was conducted in 40 estates of Polibetta and Siddapura liaison Zones during the year 2019. CWSB infestation and the details on the percentage of CWSB, cultivar types, and age of the plants were recorded. The results of the survey revealed that the incidence was more in aged plants of Old Peridenia and S.274 (>50 years) compared to young plants and C × R hybrid (Coffea congensis × Coffea canephora). Data on the percentage infestation was found more in Old Peridenia (16.81%), followed by S.274 (4.8%) and C × R (0.88%). The infested plants of Old Peridenia and S.274 showed typical symptoms as in the case of arabica plants like ridge formation, drooping and yellowing of leaves, wilting, defoliation, exit holes and death of branches and whole plants. Hence, Indian coffee farmers are shifting slowly from arabica to robusta coffee because of CWSB infestation. This survey emphasized that a complete shift from arabica to robusta cultivation may face a similar infestation problem unless management practices are followed promptly.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44919287","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}
引用次数: 0
Phytochemical profile and toxicity of thyme-derived (Thymus vulgaris) essential oil against the exotic rugose spiraling whitefly (Aleurodicus rugioperculatus Martin) infesting coconut 百里香(Thymus vulgaris)精油对入侵椰子的奇异皱螺旋粉虱(Aleurodicus rugionarculatus Martin)的植物化学特性和毒性
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7983
E. Saneera, S. Raguraman, A. Suganthi, K. Venkatesan
{"title":"Phytochemical profile and toxicity of thyme-derived (Thymus vulgaris) essential oil against the exotic rugose spiraling whitefly (Aleurodicus rugioperculatus Martin) infesting coconut","authors":"E. Saneera, S. Raguraman, A. Suganthi, K. Venkatesan","doi":"10.25081/jpc.2022.v50.i2.7983","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7983","url":null,"abstract":"Microwave-assisted heat extraction of thyme (Thymus vulgaris) yielded 1.64 per cent w/v of yellow to amber coloured and less viscous oil with a peculiar aroma. GC-MS analysis revealed the presence of 20 compounds, out of which thymol (51.94%), p-cymene (14.5%), γ-terpinene (10.09%), linalool (3.48%), and endo-borneol (3.95%) were the major compounds. Eggs, second instar nymphs and pupae of rugose spiraling whitefly (RSW) were subjected to contact toxicity assessment by complete immersion (dip method) in various concentrations of thyme oil. The results showed that essential oils at 0.35 per cent concentration exhibited 100 per cent mortality in the second instar nymphs. Thyme oil (0.5%) inhibited egg hatching and adult emergence to the tune of 100 per cent when the eggs and pupal stages were treated. Probit analysis indicated that the median lethal concentration (LC50) of thyme oil to eggs, second instar nymph sand pupal stages were 0.19, 0.13 and 0.21 per cent, respectively. Thyme oil proved to be an excellent toxicant to different developmental life stages of RSW; hence it can be successfully incorporated into the integrated pest management (IPM) programme for whitefly management in the coconut ecosystem.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49280339","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}
引用次数: 0
Cryopreservation of coconut plumule using droplet vitrification 用液滴玻璃化法冷冻保存椰子胚珠
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7977
A. Karun, K. K. Sajini, K. S. Muralikrishna, M. K. Rajesh
{"title":"Cryopreservation of coconut plumule using droplet vitrification","authors":"A. Karun, K. K. Sajini, K. S. Muralikrishna, M. K. Rajesh","doi":"10.25081/jpc.2022.v50.i2.7977","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7977","url":null,"abstract":"In the present investigation, four types of explants from mature zygotic embryos of coconut, viz., whole upper cotyledonary region without haustorium, half of the upper cotyledonary region without haustorium, plumule with a portion of radicle and exclusively plumular tissue, were cultured in 12 different media combinations to find a suitable explant which could be regenerated after cryopreservation. Explants were pre-cultured in medium with 0.4 and 0.5 M sucrose for three days followed by dehydration in PVS3 solution for different durations on a sterile aluminum strip after treating with loading solution. Strips were treated with liquid nitrogen inside a cryoflask until bubbling stopped and quickly transferred to a cryovial and stored for a minimum period of 24 hours in liquid nitrogen. It was observed that plumule alone or with a small portion of outer tissue was ideal for fast in vitro growth and recovery of whole plantlets of coconut in a medium supplemented with NAA alone. Addition of glutamine (5 mg L-1), TDZ (1 mg L-1) and NAA (18 mg L-1) aided the vigorous growth of plantlets. In control, the survival rate ranged from 60 to 90 per cent in plumule pre-grown in media containing 0.5 M sucrose after dehydration with PVS3 for various durations, whereas it was 14 to 75 per cent in cryopreserved ones. Considering the high survival (75%) and regrowth (35%) of cryopreserved plumule in the present study, there is much scope for further improvement of the procedure to find the right combination of factors so as to enhance complete recovery of plantlets without much injury to plumules during cooling and rewarming.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46091394","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}
引用次数: 0
Influence of elevation and rainfall on leaf growth, bean characteristics and yield components of arabica and robusta coffee under changing climatic conditions in Karnataka state, India 印度卡纳塔克邦气候变化条件下海拔和降雨对阿拉比卡和罗布斯塔咖啡叶片生长、豆子特性和产量成分的影响
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7981
Somashekhargouda Patil, J. Devasia, G. Daniel, N. S. P. Rao
{"title":"Influence of elevation and rainfall on leaf growth, bean characteristics and yield components of arabica and robusta coffee under changing climatic conditions in Karnataka state, India","authors":"Somashekhargouda Patil, J. Devasia, G. Daniel, N. S. P. Rao","doi":"10.25081/jpc.2022.v50.i2.7981","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7981","url":null,"abstract":"The study was undertaken to analyze the behaviour of coffee under changing climatic conditions in different coffee liaison zones of Karnataka State, India, during 2017-2020. Sample estates were identified based on elevation and rainfall patterns in different zones of the Chikkamagaluru and Hassan districts. The leaf growth parameters, bean characteristics and yield components were recorded in all the sample estates. Correlation studies indicated a significant positive relationship between the elevation, rainfall with specific leaf area (r = +0.912) and productivity (r = 0.475) during the pre-monsoon period. The monthly summer rainfall during March and April showed a significant correlation with yield in robusta (r = 0.511) and arabica (r = 0.451), indicating that blossom shower during this period significantly influenced the productivity of coffee. The studies between elevation, the quantum of rainfall and bean defect parameters indicated a significant (p<0.05) positive correlation. A positive relationship was also found between elevation and peaberry production in both robusta (r = 0.716) and arabica coffee (r= 0.456), respectively. However, there was also a significant relationship between rainfall (2020) and Jollu percentage (r = 0.386) in robusta coffee, indicating that higher elevation and rainfall-induced more peaberry content and Jollu percentage under changing climatic conditions. The overall result indicated that changes in climatic conditions such as excess rainfall and continuous soil moisture led to more vegetative growth than reproductive growth. This also produced more bean abnormalities which in turn affected the yield and quality of the coffee.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47667642","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}
引用次数: 0
Antioxidant attributes of tea in North Bengal, India: Relation with its principal constituents and properties of soil 印度北孟加拉茶叶的抗氧化特性:与其主要成分和土壤性质的关系
Journal of Plantation Crops Pub Date : 2022-09-30 DOI: 10.25081/jpc.2022.v50.i2.7979
T. Misra, A. Saha, A. Nanda, Subhrajyoti Bagchi, P. Mandal
{"title":"Antioxidant attributes of tea in North Bengal, India: Relation with its principal constituents and properties of soil","authors":"T. Misra, A. Saha, A. Nanda, Subhrajyoti Bagchi, P. Mandal","doi":"10.25081/jpc.2022.v50.i2.7979","DOIUrl":"https://doi.org/10.25081/jpc.2022.v50.i2.7979","url":null,"abstract":"This study was performed in 18 tea gardens in North Bengal, India, from 2012 to 2017. The data were pooled to investigate the relationship with soil physico-chemical properties, phyto-constituents, antioxidant attributes and age of the tea bushes and principal component analysis (PCA). PCA and dendro-hit maps were also performed with each region. The 28 principal components were chosen based on their eigen values, explaining the total data variance for tea in Dooars, Terai and Darjeeling hill. In almost all cases, composite soil physico-chemical attributes were heavily loaded on the second principal component and clustered, as visual evidenced by the dendro-hit map. Different attributes were significantly correlated each other in case of Terai i.e. (value of “r’’ at P<0.01 level) clay fraction (0.778), electrical conductivity (0.618), N (0.777), S (0.748), P (0.514 ppm), flavour index (0.918), total polyphenol (0.687) DPPH (0.794), nitric oxide (0.913), anti-lipid peroxidation (0.717) and metal chelating (0.665). In Dooars region, attributes were significantly correlated with silt (0.718), pH (0.875), P (0.615 ), chloride (0.858), TP (0.776), flavonol (0.923), quinone (0.666), tannins (0.865), DPPH (0.536), superoxide (0.576), ABTS (0.520) and MC (0.777) and in the case of Darjeeling hills, attributes were highly correlated with clay (0.812), sand (0.818), silt fraction (0.974), K (0.932), S (0.999), MC of soil (0.671), TP (0.853), tannins (0.912), DPPH (0.624), ABTS (0.661) and MC (0.633) repectively.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41666213","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}
引用次数: 0
Performance of coconut (Cocos nucifera L.) hybrids for yield and quality in the Utkal plain region of Odisha state, India 印度奥里萨邦乌特卡勒平原地区椰子(Cocos nucifera L.)杂交种的产量和质量表现
Journal of Plantation Crops Pub Date : 2021-09-21 DOI: 10.25081/jpc.2021.v49.i2.7258
S. Sahoo, S. Sumitha, A. K. Karna, G. Mishra, H. P. Maheswarappa
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引用次数: 1
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