Journal of Plantation Crops最新文献_第9页

Effectiveness of training programme on oil palm technologies for multipurpose extension officers of state department of horticulture, Andhra Pradesh 为安得拉邦园艺部多用途推广官员提供油棕技术培训计划的有效性

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I2.5786

M. Prasad, P. Sowjanya, N. Rao, A. Sarkar, T. Kumar, K. Rajesh, K. Srikanth

引用次数: 1

Microbial insight into rhizosphere of arecanut palms of Wayanad using metagenomics 利用宏基因组学研究Wayanad槟榔根际微生物

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I3.6055

M. Mohan, Dugganna Girija, K. Gopal, P. Sureshkumar

{"title":"Microbial insight into rhizosphere of arecanut palms of Wayanad using metagenomics","authors":"M. Mohan, Dugganna Girija, K. Gopal, P. Sureshkumar","doi":"10.25081/JPC.2019.V47.I3.6055","DOIUrl":"https://doi.org/10.25081/JPC.2019.V47.I3.6055","url":null,"abstract":"The rhizosphere bacterial diversity of a plant is considered to play an essential role in mediating plant as well as soil health. An attempt to explore the bacterial diversity in the rhizosphere of arecanut palms in Wayanad was done to obtain an understanding of dominant bacterial phylotypes and the status of nutrient concentrations in rhizosphere soil and plants. Since arecanut production in Wayanad is facing a decline, a study to understand the rhizosphere conditions of healthy palms essentially provided insight into what strategies needed to be adopted for improvement of arecanut cultivation. The nutrient imbalance involving increased iron in soil and deficiencies of calcium, magnesium, zinc, and boron in the Arecanut rhizosphere was found to be an evident reason for the decline in production. Apart from that, the biological activities in the rhizosphere by the diversity of microorganisms were studied to understand the dominant bacterial phyla and genera present in the Arecanut rhizosphere. The presence of various important bacterial phyla like Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes, and Bacteroidetes revealed the presence of various beneficial soil microorganisms and emphasized the need to enhance or augment the population of native microflora for efficient nutrient cycling by increasing the organic content of the soil. Since organic carbon is an essential requirement to support bacterial diversity, proper management practice that encompasses organic carbon amendment along with proper nutritional management could enhance bacterial diversity as well as health of the arecanut palms. The study indicated that the dominant bacterial phyla contained various beneficial microorganisms that can be exploited for improving nutrient recycling in the arecanut rhizosphere.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215569","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: 1

Cryopreservation of kernel and zygotic embryos of oil palm (Elaeis guineensis Jacq.) 油棕仁胚和合子胚的低温保存

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I1.5530

K. Prakash, K. S. Kumar, R. Chaudhury

{"title":"Cryopreservation of kernel and zygotic embryos of oil palm (Elaeis guineensis Jacq.)","authors":"K. Prakash, K. S. Kumar, R. Chaudhury","doi":"10.25081/JPC.2019.V47.I1.5530","DOIUrl":"https://doi.org/10.25081/JPC.2019.V47.I1.5530","url":null,"abstract":"The seed storage behaviour of oil palm (Elaeis guineensis Jacq.) is enigmatic. Earlier, it was categorised as recalcitrant or orthodox and later, it was confirmed to be exhibiting intermediate seed storage behaviour. Considerable difference in the water content between zygotic embryo and the seed/kernel exists which is proportionally maintained even after desiccation of kernel, which qualifies it to be intermediate storage behaviour. To attempt long term conservation of oil palm germplasm grown in India, studies on germinability/viability in relation to moisture content was conducted for ‘dura’ palm using seed kernel, zygotic embryos and endosperm plug as explants. Based on desiccation and cryopreservation experiments in kernels and embryos, it showed intermediate storage behavior. Zygotic embryo cryopreservation was possible between the moisture content of 10-20 per cent of embryos, and was achieved using silica gel desiccation method of either kernels or embryos or both. Four hours of desiccation under laminar air flow was found optimum to maintain viability after cryo-exposure. A new type of explant, endosperm plug, of 0.1 g weight and 2-5 mm length could offer advantage for the desiccation and cryopreservation of oil palm as it could be dehydrated up to 6 per cent moisture level and retained 20 per cent viability after cryo-exposure. Initial attempt to use encapsulation-dehydration and vitrification-desiccation methods for embryos of oil palm did not yield positive results, necessitating further experiments.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215714","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: 2

Olfactory response of red palm weevil, Rhynchophorous ferrugineus (Olivier) (Coleoptera: Dryophthoridae), to host / food volatiles 红棕象甲(鞘翅目:树蛾科)对寄主/食物挥发物的嗅觉反应

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I1.5533

Vibina Venugopal, K. Subaharan

引用次数: 2

Entomopathogenic fungi – Potential candidates for biocontrol of Helopeltis antonii Signoret in cashew 昆虫病原真菌——腰果中安东尼Helopeltis antonii Signoret生物防治的潜在候选者

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I1.5531

M. Smitha, K. Nithin, A. Sobhana

{"title":"Entomopathogenic fungi – Potential candidates for biocontrol of Helopeltis antonii Signoret in cashew","authors":"M. Smitha, K. Nithin, A. Sobhana","doi":"10.25081/JPC.2019.V47.I1.5531","DOIUrl":"https://doi.org/10.25081/JPC.2019.V47.I1.5531","url":null,"abstract":"Evaluation of fungal entomopathogens, viz., Beauveria bassiana, Metarhizium anisopliae and Lecanicillium lecanii against tea mosquito bug (Helopeltis antonii Signoret), an insect pest of cashew revealed that these fungi are pathogenic to H. antonii. Mortality of H. antonii commenced after three days of inoculation, increased gradually with time and became evident at fifth day with 82.5 per 9 -1 cent, 85 per cent and 65 per cent respectively with B. bassiana, M. anisopliae and L. lecanii @10 spores mL . B. bassiana and M. anisopliae shown complete mortality at sixth day, whereas mortality rate with L. lecanii was 85 per cent. A field experiment was 8 -1 conducted in randomized block design for two consecutive years with these three entomopathogenic fungi @10 spores mL . Two rounds of spray were given by targeting flowering and nut set stage in the first year, instead of the routine three spray schedule on flushing, flowering and nut set; while routine three sprays were given in the second year. In the first year of field evaluation, least damage was observed in Kerala Agricultural University package of practices (KAU POP) with quinalphos, targeting both flowering and nut set stage. However, both B. bassiana and L. lecanii also recorded less tea mosquito bug damage and were comparable with KAU POP. In the second year, B. bassiana was on par with KAU POP and L. lecanii was superior to control. Highest nut yield was recorded in trees treated with B. bassiana followed by KAU POP.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215242","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

Characterization of Lasiodiplodia theobromae causing leaf blight disease of coconut 引起椰子叶枯病的可可叶枯虫的特性研究

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I2.5763

R. Ramjegathesh, I. Johnson,, K. M. Hubali, H. P. Maheswarappa

引用次数: 3

Multivariate analysis of oil palm germplasm for vegetative and bunch yield traits 油棕种质营养性状和束产量性状的多变量分析

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I2.5778

H. P. Bhagya, P. Gangadharappa, B. Kalyanababu, D. S. M. B. N. Naika, R. Naik

引用次数: 0

Carbon stocks in major cashew growing soils of coastal Karnataka, India 印度沿海卡纳塔克邦主要腰果种植土壤的碳储量

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I1.5536

R. Srinivasan, A. Natarajan, K. A. Kumar, M. Lalitha

{"title":"Carbon stocks in major cashew growing soils of coastal Karnataka, India","authors":"R. Srinivasan, A. Natarajan, K. A. Kumar, M. Lalitha","doi":"10.25081/JPC.2019.V47.I1.5536","DOIUrl":"https://doi.org/10.25081/JPC.2019.V47.I1.5536","url":null,"abstract":"This study was taken up to assess the soil organic carbon (SOC) stock under cashew plantations in different management conditions viz., natural (cashew mixed with forest trees and cashew in scrub land conditions) and intensive management (research stations) in regions/locations of coastal Karnataka. Profile study was undertaken and six major soil series were identified. Horizon-wise soil samples were collected from different layers of soil profiles and the major soil properties viz., bulk density, pH, EC, particle size distribution and SOC were determined using standard laboratory procedures. The SOC stock was high in surface soils (2.0 to -2 -2 8.23 kg C m ) compared to subsoils (0.08 to 3.28 kg C m ) and it decreased with depth. The maximum SOC was found in mixed forest land use system followed by cashew plantation in scrub land and in research farm. The SOC stock in different depths (0-30, 30-100 -2 -2 and 0-100 cm) of the soils varied from 2.37 to 9.70 kg C m and 1.48 to 5.69 kg C m , respectively. Result indicated that cashew plantation under natural management has more SOC stock and high carbon sequestration potential-than intensively managed cashew plantations.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215283","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: 2

Electrophysiological and behavioral response of red palm weevil, Rhynchophorus ferrugineus (Olivier) (Coleoptera: Dryophthoridae) to fermented coconut sap neera 红棕象甲(鞘翅目:树蛾科)对发酵椰汁的电生理和行为反应

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I2.5767

Vibina Venugopal, K. Subaharan

引用次数: 3

Gene expression analysis of Coffea arabica seeds processed under different post-harvest processing methods 不同采收后加工方式下阿拉比卡咖啡种子基因表达分析

Journal of Plantation Crops Pub Date : 2019-01-01 DOI: 10.25081/JPC.2019.V47.I1.5528

A. Pallavicini, J. Devasia, Paolo Edomi Martina Modonut, L. Navarini

{"title":"Gene expression analysis of Coffea arabica seeds processed under different post-harvest processing methods","authors":"A. Pallavicini, J. Devasia, Paolo Edomi Martina Modonut, L. Navarini","doi":"10.25081/JPC.2019.V47.I1.5528","DOIUrl":"https://doi.org/10.25081/JPC.2019.V47.I1.5528","url":null,"abstract":"The mode of coffee processing, either the wet or dry method, determines the characteristic flavour and establishes the differences in quality of the final green coffee produced. The present study focused mainly on identifying the differential gene expression in green coffee seeds of Brazilian arabica coffee (Coffea arabica L.) among samples prepared under three different post-harvest treatments (natural, washed and semi washed method) and grown in two different locations. Expression levels of 16 genes of interest were measured. These genes are involved in various cellular, metabolic and biochemical activities influencing levels of certain compounds, such as lipids, carbohydrates, caffeine and chlorogenic acid, associated with quality characteristics of the beverage. Microarray experiments were designed with cDNA probe sequences. Microarray data was analyzed to identify the differences in gene expression between two altitudes and between two variables: location and post-harvest treatment. Cluster analysis was carried out with samples showing similar patterns, which are characteristic to the group. With this approach, it was possible to identify the important genes in C. arabica seeds that have differential (increased or decreased) expression levels. It was also seen that between the location and treatments, location profoundly impacts the levels of gene expression in samples.","PeriodicalId":36468,"journal":{"name":"Journal of Plantation Crops","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69215695","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: 1