作物学报2012，Vol.38Issue(1)：10-22,13.DOI:10.3724/SP.J.1006.2012.00010
我国水稻主栽品种抽穗期多样性的遗传分析
Genetic Analysis for the Diversity of Heading Date of Cultivated Rice in China
摘要
Abstract
Heading date (HD) determines the adaptability to growing regions of cultivated rice. There is a rich diversity of HDs in Chinese cultivated rice. In this study, HDs of 83 typical japonica rice and 51 typical Mica rice cultivars native to different regions in China were investigated and their basic vegetative growth (BVG), photoperiod-sensitivities (PS) and temperature-sensitivities (TS) were analyzed. A regression analysis showed that HD was closely correlated with PS and BVG The PS and BVG of cultivars were weak in high latitude regions of China, and strong in low latitude regions. Genetic analyses of the 134 cultivars were conducted using a set of HD tester lines. The results showed that, on the whole, when the cultivars carried no-PS allele e1 the plants headed earlier with weaker PS and BVG, when the cultivars carried the PS allele E1 or E1', the plants headed later with strong PS and BVG. When the cultivars carried the allele Ef-1, the plants headed earlier with weaker BVG, when the cultivars carried the allele Ef-1' or ef-1, the plants headed later with strong BVG It suggested that E1 and Ef-1 are two major determinants of variation in heading date of cultivated rice in China. Otherwise, the distribution of different alleles of the major heading date genes in different regions of China was analysed, and the results showed that the leading alleles of the major HDgenes in different regions of China was different.关键词
抽穗期/多样性/感光性/感温性/基本营养生长性/基因型分析Key words
Heading date/ Diversity/ Cultivated rice/ Basic vegetative growth/ Photoperiod-sensitivities引用本文复制引用
魏祥进,徐俊锋,江玲,王洪俊,周振玲,翟虎渠,万建民..我国水稻主栽品种抽穗期多样性的遗传分析[J].作物学报,2012,38(1):10-22,13.基金项目
本研究由国家高技术研究发展计划(863计划)项目(2006AA100101,2006AA10Z1A5,2006BAD13B01,2009AA101101),国家自然科学基金项目(30871497,30571142),江苏省高技术招标项目(BG2006301)和高等学校学科创新引智计划项目(B08025)资助. （863计划）
