搜索结果: 1-9 共查到“作物遗传学 Study”相关记录9条 . 查询时间(0.296 秒)
Genome-wide association study of pericarp color in rice using different germplasm and phenotyping methods reveals different genetic architectures
rice pericarp color quantitative trait locus candidate gene genome-wide association study
2023/4/21
Pericarp colors (PC) in rice are determined by the types and content of flavonoids in the pericarp. The flavonoid compounds have strong antioxidant activities and are beneficial to human health. Howev...
Corn’s genetic diversity on display in new genome study
corn’s genetic diversity crop yields genetic diversity
2021/8/6
A new study details the genomes of 26 lines of corn from across the globe. The genomes can help scientists piece together the puzzle of corn genetics. Using these new genomes as references, plant scie...
Genome-wide association study and candidate gene analysis of rice cadmium accumulation in grain in a diverse rice collection
Rice Oryza sativa L. Cadmium accumulation QTL GWAS
2023/4/21
Cadmium (Cd) accumulation in rice followed by transfer to the food chain causes severe health problems in humans. Breeding of low Cd accumulation varieties is one of the most economical ways to solve ...
A Whole-Genome Sequenced Rice Mutant Resource for the Study of Biofuel Feedstocks
Whole-Genome Sequenced Rice Mutant Resource Biofuel Feedstocks
2017/7/24
Rice is a staple food for over half of the world’s population and a model for studies of candidate bioenergy grasses such as sorghum, switchgrass, and Miscanthus. To optimize crops for biofu...
Over many thousands of years, farmers have bred maize varieties so the crops are optimally adapted to local environments.A new study, published Feb. 6 in Nature Genetics, analyzed close to 4,500 maize...
Eyespot resistance gene Pch1 and methods of study of its effectiveness in wheat cultivars
eyespot molecular markers Pch1 gene resistance wheat
2015/12/29
The scientific report presents results of our studies on the gene Pch1, conferring resistance to eyespot disease in wheat, caused by the fungus Occulimacula spp. The presence of the gene Pch1 in wheat...
秋水仙碱诱发玉米变异特性的追踪研究Study on Variation Specificity of Maize Induced by Colchicine
秋水仙碱 玉米 变异特性
2008/1/16
摘要对秋水仙碱诱发产生的5种玉米变异材料，在自交2年后,进行了变异特性的追踪检测。结果显示：不同来源的玉米变异材料，其发芽势提高了3%～46%，玉米根尖分生区细胞直径减小了6%～15%，同时分生区细胞核直径则增大了5%～18%，玉米根尖分生区细胞染色体数目变异率达25.25%～38.55%，且染色体数目变异范围主要在10～30条之间。其中，供试玉米No.1和No.16根尖细胞染色体条数趋向大于20...
重铬酸钾对蚕豆根尖细胞致畸效应的研究Study on Teratogenic Effect of Potassium Dichromate on Vicia Faba Root Tip Cells
重铬酸钾 蚕豆 微核率 色体畸变率
2008/1/8
摘要
以蚕豆根尖为材料，研究重铬酸钾对蚕豆根尖细胞的致畸效应。采用蚕豆根尖细胞的微核试验和染色体畸变试验方法，以不同浓度的重铬酸钾为诱变剂，测定蚕豆根尖细胞的微核率和染色体畸变率。结果表明：重铬酸钾能诱发较高频率的微核率，即在一定浓度范围内，其微核率随重铬酸钾处理浓度的升高而增加，但高于一定浓度后反而呈下降趋势；不同浓度的重铬酸钾均使蚕豆根尖细胞有丝分裂指数增大；重铬酸钾还能诱导蚕豆根尖细胞产生...
摘要本研究应用RAPD技术对湄洲岛和平潭岛上4个烟豆小种群进行的生态遗传学研究，结果显示，总的多态位点比率为1.0，4个种群中最小为0.41，最大为0.82，表现出高度的多态性。利用相似系数及遗传距离进行的聚类分析结果表明,在种群间地理距离较大时，遗传分化与地理距离有一定的相关性，在小范围内则无明显相关性。
Abstract:The ecological genetic research on ...