International Journal of Advances in Agricultural Science and Technology最新文献

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First Comprehensive Report on the Occurrence of Various Fungal Diseases in Seabuckthorn from Uttarakhand, India 印度北阿坎德邦沙棘各种真菌病发生的首次综合报告
International Journal of Advances in Agricultural Science and Technology Pub Date : 2023-01-30 DOI: 10.47856/ijaast.2022.v10i01.002
N. Sharma
{"title":"First Comprehensive Report on the Occurrence of Various Fungal Diseases in Seabuckthorn from Uttarakhand, India","authors":"N. Sharma","doi":"10.47856/ijaast.2022.v10i01.002","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v10i01.002","url":null,"abstract":"Seabuckthorn is a general term given to the deciduous shrub tree Hippophae Linn. It is one of the most magical plant resources with higher value of economy and ecology. It is also known as “wonder plant” due to its multifarious benefits. Therefore, seabuckthorn should serve as a measure to safeguard medicinal and nutritional plants, to conserve biodiversity and environment and to generate sustainable income source for local people. Diseases and insects are the major factors affecting the success of seabuckthorn cultivation. Control measures depend on proper identification of diseases and their causal agents. Proper disease diagnosis is therefore vital as without proper identification of the disease and the disease causing agent, disease control measures are waste of time and money and can lead to further plant losses. Despite although there are a few reports available regarding the pathological aspect of Hippophae spp. in India, but there is no systematic study on distribution and severity of diseases occurring on Hippophae salicifolia D. Don in Uttarakhand. Hence, a systematic study was undertaken on the occurrence of diseases on Seabuckthorn plant which are responsible for negatively affecting the yield and quality of a magical plant of Indian Himalayan Region.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125594485","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
EVALUATION OF CALCIUM OXIDE NANOPARTICLES TO ENHANCE HEAVY METAL STRESS TOLERANCE IN PLANTS 氧化钙纳米颗粒增强植物重金属抗性的评价
International Journal of Advances in Agricultural Science and Technology Pub Date : 2023-01-30 DOI: 10.47856/ijaast.2022.v10i01.003
G. Modi, Babita Babita, Bhumika Arora, S. Shivani, Nivedan Bhardwaj
{"title":"EVALUATION OF CALCIUM OXIDE NANOPARTICLES TO ENHANCE HEAVY METAL STRESS TOLERANCE IN PLANTS","authors":"G. Modi, Babita Babita, Bhumika Arora, S. Shivani, Nivedan Bhardwaj","doi":"10.47856/ijaast.2022.v10i01.003","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v10i01.003","url":null,"abstract":"Heavy metal contamination is a severe environmental problem affecting global food production and safety. Heavy metal stress due to its toxicity, bioaccumulation, and non-biodegradability, it become quite serious in nature. The available strategies for preventing heavy metal contamination are not frequently used because of their inefficient and time- or money-consuming properties. Recent developments in nanotechnology have been made based on ameliorative strategies which have a potential alternative to physic-chemical methods. Under heavy metal stress, the application of calcium oxide nanoparticles (CaO-NPs) significantly boosts plant biomass, anti-oxidative enzyme activities (such as catalase (CAT), ascorbate peroxidase (APX), superoxide dismutase (SOD), and glutathione reductase (GR)), and the level of non-enzymatic antioxidants (ascorbate and glutathione). Additionally, CaO-NPs enhance the gene expression linked to anti-oxidative enzymes. It can be suggested that CaO-NPs could be used as a potential chemical to reduce heavy metal uptake and toxicity in the plants grown under heavy metal contaminated soil. This review provides an overview of plant-CaO-NPs research in increasing heavy metal stress tolerance in plants.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134271360","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
PROBLEMS IN SUPPLY CHAIN OF POMEGRANATE (Punica Granatum) IN ARGHANDAB DISTRICT, KANDAHAR PROVINCE, AFGHANISTAN 阿富汗坎大哈省阿尔甘达布地区石榴(石榴)供应链的问题
International Journal of Advances in Agricultural Science and Technology Pub Date : 2023-01-30 DOI: 10.47856/ijaast.2022.v10i01.001
Surgul Azimi, Azizul Rahman Ragashtai
{"title":"PROBLEMS IN SUPPLY CHAIN OF POMEGRANATE (Punica Granatum) IN ARGHANDAB DISTRICT, KANDAHAR PROVINCE, AFGHANISTAN","authors":"Surgul Azimi, Azizul Rahman Ragashtai","doi":"10.47856/ijaast.2022.v10i01.001","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v10i01.001","url":null,"abstract":"Pomegranate plant has been grown since ancient times for its delicious fruits and as an ornamental garden for its red, orange or occasionally, creamy yellow flowers. Pomegranate (Punica granatum L.) belongs to the Punicaceae family. It is also known as the Chinese Apple or Carthage or Apple with many seeds. About 12 per cent of the total land in Afghanistan is arable and less than 6 per cent currently is cultivated. Agriculture is the backbone of the Afghan economy; according to the statistical book FY (2017-18) the contribution agriculture to the country Gross Domestic Product (GDP) was 20.9 per cent while the labor force engaged in this sector is around 60.8 per cent. The annual growth rate of pomegranate production in Afghanistan was predicted at 2.9 per cent (Fitrat, 2014). Pomegranate contribute of the total population of Afghanistan was about (2) per cent to the total horticultural production in Afghanistan. The local varieties grown in the main production areas of Kandahar province are known for their high quality and productivity. Different varieties of pomegranates are produced in Afghanistan and supplied to the local markets. Through the maturity time of the crop varies according to the climatic conditions, usually the fruit comes into the market during summer and continues into the fall season. The Agriculture sector is entirely run by private enterprise, including farmers, cooperatives, inputs suppliers, herders, agribusiness processors, and exporters. Kandahar province is recognized worldwide for its high quality pomegranate production especially the Kandahar varieties, which are highly preferred by national and international consumers. Of the total land under pomegranate cultivation in the country, Kandahar share is about 36.7 per cent with 39.5 per cent of the total national production. But due to poor orchard management practices, careless production, widespread pest and diseases, lack of quality inputs and lack of technical and financial support to the farmers both quality and quantity of pomegranate is badly affected and gradually decreasing.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117168468","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
ESTIMATION OF COMBINING ABILITY AND HETEROSIS IN WHEAT 小麦配合力与杂种优势评价
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-12-30 DOI: 10.47856/ijaast.2022.v09i12.001
Md. Abdus Sattar Karikor, Md. Shahriar Kabir, M. Hossain, M. Azad, M. A. Mohamud, Md. Hafizur Rahman, N. Shumsun, M. Hoque
{"title":"ESTIMATION OF COMBINING ABILITY AND HETEROSIS IN WHEAT","authors":"Md. Abdus Sattar Karikor, Md. Shahriar Kabir, M. Hossain, M. Azad, M. A. Mohamud, Md. Hafizur Rahman, N. Shumsun, M. Hoque","doi":"10.47856/ijaast.2022.v09i12.001","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i12.001","url":null,"abstract":"The study used a half-diallel mating fashion to identify combining ability (GCA and SCA) and heterosis of six wheat (Triticum aestivum L.) genotypes and their 15 F1 hybrids for morpho-physiological, yield, and yield-contributing traits. The present study was carried out in a randomized complete block design with three replications. The studied characters are heading days, maturity days, chlorophyll content, Plant height, Effective tillers plant-1, Total tillers plant-1, Spikes plant-1, Spike length, Filled spikelets spike-1, Unfilled spikelets spike-1, Grains spike-1, Thousand grain weight, Grain yield plant-1, Biological yield plant-1, and Harvest index Highly significant differences were observed among genotypes (parents and F1 hybrids) for all characters studied. The results also showed that the mean squares due to general (GCA) and specific (SCA) combining abilities were highly significant for all studied characters except harvest index, indicating the magnitude of both additive and non-additive gene effects in governing these traits. GCA/SCA ratios were greater than one for all characters except filled spikelets spike-1 and harvests index, indicating the dominance of additive gene effects, which play important roles in the inheritance of these characters. While the non-additive effect of the gene predominated in the inheritance of filled spikelets (spike-1) and harvests index, The parent BARI GOM-30 emerged as the best general combiner for total tillers plant-1, filled spikelets spike-1, grains spike-1, thousand-grain weight, grain yield plant-1, and harvest index. Bari Gom-28 was the best general combiner for heading days and maturity days, and Sourav was the best for effective tillers plant-1, spikes plant-1, and biological yield plant-1. The cross BARI GOM-30 SOURAV was the best specific combiner for effective tillers plant-1, total tillers plant-1, spikes plant-1, and PRODIP SOURAV for filled spikelets spike-1. Bari GOM-33 Sourav emerged as the best specific combiner for grain yield plant-1 and Prodip Ayt-5 for grain spike-1. Concerning heterotic effects in comparison to the midparent, the F1 hybrid BARI GOM-28 BARI GOM-33 showed maximum significant positive heterosis for chlorophyll content and biological yield plant-1 and BARI GOM-33 SOURAV for effective tillers plant-1, spikes plant-1, and grain yield plant-1. These parents and cross combinations could be used for the breeding program of wheat for potential yield.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"7 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120834937","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
KADAKNATH POULTRY FARMING – UPLIFT YOUR ECONOMY 家禽养殖——提升你的经济
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-12-30 DOI: 10.47856/ijaast.2022.v09i12.002
R. S, Indianraj N, M. Deepa
{"title":"KADAKNATH POULTRY FARMING – UPLIFT YOUR ECONOMY","authors":"R. S, Indianraj N, M. Deepa","doi":"10.47856/ijaast.2022.v09i12.002","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i12.002","url":null,"abstract":"Poultry farming is a profit earning business with less expenses. Mainly the chickens are reared for meat and eggs. Kadaknath is a dual purpose breed used for meat and eggs. The kadaknath is resistant to many diseases and well adaptable to any environmental conditions. It is a black flesh fowl. The varieties of kadaknath are jet black, Pencilled and golden black kadaknath. The poultry shed for kadaknath can be established in minimum area of 2000 square feet. The poultry shed should be kept clean and disinfectant must be sprayed twice a month to prevent disease attack. Grinded rava, pre- starter, starter and vegetable wastes are fed to kadaknath chickens. After six months kadaknath hens starts laying eggs and lay 100-120 eggs per annum per hen. The eggs are incubated in automatic incubator upto 17 days and after the embryo developed eggs are then incubated in manual incubator. On 18 -19th day the eggs are hatched out. F1 OR B1, IBD, lazota and fowl pox vaccine are vaccinated to kadaknath chickens. Kadaknath meat and eggs contains vitamins, minerals, protein and amino acids and it has great importance in curing various medical problems like head ache, post-delivery problems, nervous disorder and asthma.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"4609 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121682982","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
Analysis of Genetic Diversity in Some Rice Varieties and Their Performance in Bangladesh 孟加拉国部分水稻品种遗传多样性及其表现分析
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-12-30 DOI: 10.47856/ijaast.2022.v09i12.003
M. Arifuzzaman, Md. Shahriar Kabir, Md. Mukhtar Hossain, M. Hoque, Md Abdul Baki, M. Kabir, Md. Shakhawat Hossain, Monira Rahman, M. A. Mohamud, M. Azad, M. Mollah, N. Shumsun, Md. Hafizur Rahman
{"title":"Analysis of Genetic Diversity in Some Rice Varieties and Their Performance in Bangladesh","authors":"M. Arifuzzaman, Md. Shahriar Kabir, Md. Mukhtar Hossain, M. Hoque, Md Abdul Baki, M. Kabir, Md. Shakhawat Hossain, Monira Rahman, M. A. Mohamud, M. Azad, M. Mollah, N. Shumsun, Md. Hafizur Rahman","doi":"10.47856/ijaast.2022.v09i12.003","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i12.003","url":null,"abstract":"This study was conducted to evaluate the genetic diversity for several rice features and their association with yields, as well as to identify genotypes of short-duration rice. The experiment was conducted in the field in a natural environment, and data were collected on several plant parameters for each genotype at various phases of plant development. Twenty genotypes of rice were examined based on their morphological and physiological characteristics. From July through December of 2020, the experiment was conducted at the Bangladesh Rice Research Institute's regional station in Shyampur, Rajshahi. There was significant diversity among the twenty rice genotypes for all characteristics tested. The genotype BRRI dhan57 displayed the shortest days to flowering. In terms of days to maturity, the genotype BRRI dhan57 was the earliest, with a maturity time of 107.33 days, followed by BRRI dhan56 and BRRI dhan39. The days to blooming had the highest heritability (99.75%), followed by the days to maturity (99.58%), grain yield (85.30%), thousand grain weight (85.22%), grains per panicle (84.91%), plant height (82.21%), and tillers per hill (21.61%). High heritability scores indicated that the researched qualities were less influenced by the surrounding environment. As a percentage of the mean, the genetic gain was greatest for grain yield (36.33%) and lowest for tillers per hill (6.60%) among the yield-contributing factors. In days to flowering, days to maturity, grains per panicle, and plant height, high heritability and genetic progress were seen. According to the principal component analysis (PCA), the Eigen values of the first four components of the total variance accounted for 89.46% of the total variance, indicating that these components were mostly responsible for the genetic diversity of the current materials. It was the largest cluster, containing seven rice genotypes. Clusters II and V contained five and four genotypes of rice, respectively. Clusters III and IV were the smallest, with only two genotypes apiece. The pattern of distribution of genotypes among various clusters demonstrated the significant genetic variety present in the genotypes, which may be the result of adaptation of these genotypes to certain environmental conditions. The largest value of intercluster distance indicated that cluster III genotypes were extremely distinct from cluster IV genotypes. Negative values in both vectors for tillers per hill suggested that this feature contributed the least to the total diversity. The number of panicles per hill, panicle length, weight per thousand grains, and grain yield were all positive in both directions. According to these statistics, these four characteristics contributed the most to the variety.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130685964","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
PITCHER IRRIGATION PRACTICES PERAMBALUR REGION IN TAMILNADU 在泰米尔纳德邦的perambalur地区进行投手灌溉
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-11-30 DOI: 10.47856/ijaast.2022.v09i11.001
INDIANRAJ. N, K. Seethalakshmi, V. Bharathkalyan
{"title":"PITCHER IRRIGATION PRACTICES PERAMBALUR REGION IN TAMILNADU","authors":"INDIANRAJ. N, K. Seethalakshmi, V. Bharathkalyan","doi":"10.47856/ijaast.2022.v09i11.001","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i11.001","url":null,"abstract":"Water is the primary input for crop production and increasingly becomes scarce due to its high demand in agricultural sector. Quality of water is assuming great importance with the increasing demand in industries, agriculture and rise in standard of living. Agriculture is the major user (89%) of India’s water resources. Pitcher irrigation is an ancient and very effectual irrigation system employed in many arid and semiarid counties. Among traditional irrigation systems, pitcher irrigation is one among the foremost efficient and compatible for little farmers in many areas of the planet. Small pitchers are often used because they are less expensive than large ones. Water seeps out of a buried pitcher due to the pressure head gradient across the wall of the pitcher directly into the root zone of the irrigated crop. Pitcher irrigation entails burying an unglazed, porous clay pot with in soil before seedling. Water poured into pot seeps slowly into the soil, feeding the seedling's roots with a gentle supply of moisture. It also helps to improve soil physical properties particularly the structural status in soil and also enhances the water use efficiency of the crop, soil organic carbon and builds up soil fertility.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116289002","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
Challenges and Opportunities in Genetic Improvement of Essential Oil-Bearing Damask Rose (Rosa damascena): A Review 含油大马士革玫瑰(Rosa damascena)遗传改良的挑战与机遇
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-11-30 DOI: 10.47856/ijaast.2022.v09i11.003
V. L., R. Ramadoss, P. Jaisankar, M. Soundariyan
{"title":"Challenges and Opportunities in Genetic Improvement of Essential Oil-Bearing Damask Rose (Rosa damascena): A Review","authors":"V. L., R. Ramadoss, P. Jaisankar, M. Soundariyan","doi":"10.47856/ijaast.2022.v09i11.003","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i11.003","url":null,"abstract":"Damask rose cultivated for essential oil production mainly used in perfume industry. Due to the highly perishable flowers, post-harvest handling of the flowers prior to oil extraction would be considered as a key point in rose essential oil production. Besides its major application in aroma and cosmetic industries, rose essential oil has been reported with valuable pharmacological properties such as antibacterial, antioxidant, and cytotoxic activities. Plant breeders are being encouraged to develop new damask rose cultivars with improved oil content and higher flower yield qualities due to rising market demand. The aforementioned qualities can be improved using traditional breeding methods such as clonal selection and intra-specific hybridization. But, through the convention breeding method creation of genetic variation is time taking, and the preservation of the authentic scent and quality of the rose oil is very difficult. Recent breakthroughs in molecular-markers techniques, genomics, and transcriptomics, have resulted in large volumes of data being generated in damask rose. Several attempts have been undertaken to accelerate the breeding of R.damascena using molecular technologies. However, due to the species' high heterozygosity and polyploidy nature, translating the findings of such studies to practical breeding remains a significant challenge. This review paper outlines recent advances in conventional and modern molecular breeding procedures, as well as their potential uses and limitations in improving the oil-bearing rose.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125830679","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
Breeding Strategies for Drought Tolerance in Crop Plant, A View 作物抗旱育种策略综述
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-11-30 DOI: 10.47856/ijaast.2022.v09i11.004
R. Gunasekar, C. Rettinassababady
{"title":"Breeding Strategies for Drought Tolerance in Crop Plant, A View","authors":"R. Gunasekar, C. Rettinassababady","doi":"10.47856/ijaast.2022.v09i11.004","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i11.004","url":null,"abstract":"Drought is one of the most severe abiotic stresses in many regions of the world, and it is one of the most urgent issues in the current climate scenario. Drought-tolerant varieties are in high demand, which appears to be a challenging task for plant breeders. However, difficulties are complicated by crop production challenges on genetic and physiological bases. Drought is one of the most major environmental factors affecting crop productivity and quality around the world. Drought mostly impacts crops that thrive in wetland conditions, which account for 80% of all farmed land in the world. Climate change raises the likelihood of increased drought in many regions of the world in the next decades, causing crop damage as a result of abnormal metabolism and perhaps reducing crop growth, crop death, or crop development death. Drought resistance is defined as the mechanism(s) that cause the crop to lose the least amount of yield in a drought environment compared to the highest yield in a constant-free of optimal environment. Drought stress reduces the size of the leaves, stem extension, and root proliferation inside the soil; it also disrupts plant water relations and reduces water-use efficiency, reducing the plant’s yielding ability. Therefore, breeding for drought resistance is a good approach, combining both conventional and molecular approaches to develop a drought resistant variety. Root morphology research, proline estimates, and leaf rolling are all factors to take into account. Breeding improved drought-tolerant cultivars may be more effective if selection is based on a comprehensive approach to testing. Water stress also affects the crop’s physiological activity by inhibiting photosynthesis and assimilates consumption in the growing leaves. Plant hormones play a key role in transducing the stress signal, with abscisic acid (ABA) being the most important among them. To alleviate suitable crop productivity under environmental stresses, scientists developed various breeding strategies, such as conventional breeding, which works for both self-pollinated and cross-pollinated crops and is used to develop or improve cultivars using a basic conservative tool for manipulating plant genomes within the natural genetic boundaries of species. Pedigree, recurrent selection, back-crossing, and mutation breeding are among the conventional breeding strategies used to generate cultivars that can withstand drought stress.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122220107","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
Evaluation of Perfect Microsatellites in Nile Tilapia (Oreochromis niloticus) Genome 尼罗罗非鱼基因组完美微卫星的评价
International Journal of Advances in Agricultural Science and Technology Pub Date : 2022-10-30 DOI: 10.47856/ijaast.2022.v09i10.002
Mojekwu Tonna Onyekachukwu
{"title":"Evaluation of Perfect Microsatellites in Nile Tilapia (Oreochromis niloticus) Genome","authors":"Mojekwu Tonna Onyekachukwu","doi":"10.47856/ijaast.2022.v09i10.002","DOIUrl":"https://doi.org/10.47856/ijaast.2022.v09i10.002","url":null,"abstract":"Microsatellites or simple sequence repeats (SSRs) consist of a sizable part of genomes and play a crucial role in the function of genes and the organization of the genome. The complete availability of a genome sequence for Nile tilapia (Oreochromis niloticus) provides the possibility of accomplishing a genome-wide analysis of SSRs in this species. I analyzed the abundance and density of perfect SSRs in the Nile tilapia genome and observed a sum of 252,047 microsatellites with 1–6 bp nucleotide motifs. This indicates that about 2.7 % of the Nile tilapia whole genome sequence (927.77Mb) is made up of perfect SSRs, with an average length of 135.68bp/Mb. The average density and frequency of perfect SSRs were 271.69 loci/Mb and 5834.46 bp/Mb, respectively. The six classes of perfect SSRs proportional distribution within the Nile tilapia genome were not even. Dinucleotide repeats (40.13 %) with a total count of 101145 of an average length of 26.11 bp happen to be the most abundant class of SSRs, while the percentages of mononucleotide, trinucleotide, tetranucleotide, pentanucleotide, and hexanucleotide repeats was 31.88 %, 11.98 %, 11.52 %, 4.22 %, and 0.26 %, accordingly. The various classes of SSRs repeat differ in their number of repeats with the highest being 95. My results indicate that 21 motifs contain the prevalent categories with a frequency above 1 locus/Mb: A, AAC, AAG, AATAG, AATTC, AC, AG, AGAT, AT, ATCT, ATG, ATGG, ATT, ATTT, C, CCT, CTG, CTTT, GT, GTTT.","PeriodicalId":232568,"journal":{"name":"International Journal of Advances in Agricultural Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129923868","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
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