植物学报2011，Vol.46Issue(1)：21-27,7.DOI:10.3724/SP.J.1259.2011.00021
东乡野生稻苗期耐冷性的遗传分析
Genetic Analysis of Cold Tolerance at the Seedling Stage in Dongxiang Wild Rice (Oryza rufipogon)
摘要
Abstract
We examined the cold tolerance of seedlings of a BILs population (BC1F9) of Dongxiang wild rice (Dwr)/Xieqingzao B (Xqz B)//Xqz B by cold treatment assay and genetic analysis. The control materials included the strong cold-tolerant variety, Longdao 5, and the cold-sensitive cultivar Xqz B, using seedling wilting rate and seedling mortality rate as evaluation indices. After cold treatment (10℃) for 7 days, the mean seedling wilting rate and seedling mortality rate for 228 BILs were 67.4％ and 70.8％, respectively. The lines with only 20％ seedling mortality rate or below were further treated with a colder temperature of 8℃ day/5℃ night for 5 days. The lines 5243 and 5335 were the most coldtolerant and may be useful for constructing quantitative trait loci-near-isogenic lines of Dwr. Moreover, the skew-normal and continuous distribution of seedling wilting and mortality rates suggest that cold tolerance at the seedling stage in Dwr represents the inheritance of qualitative-quantitative traits which are controlled by major genes and polygenes.关键词
耐冷性/东乡野生稻/近等基因系/质量-数量性状/数量性状基因位点引用本文复制引用
简水溶,万勇,罗向东,方军,储成才,谢建坤..东乡野生稻苗期耐冷性的遗传分析[J].植物学报,2011,46(1):21-27,7.基金项目
国家自然科学基金(No.30860120)、教育部留学回国人员科研启动基金(No.2008-809)、江西省教育厅重点项目(No.GJJ08146)和江西师范大学研究生创新基金(No.XSD-Y-09037) （No.30860120）
