太湖流域晚粳品种抽穗期的遗传分析  

Genetic Analysis of Heading Date of Late Season Japonica Rice from Taihu Lake Region

作　　者：周振玲[1,2] 江玲[1] 徐大勇[1,2] 魏祥进[1] 刘喜[1] 卢百关 万建民[1,3] 

机构地区：[1]南京农业大学作物遗传与种质创新国家重点实验室,江苏南京210095 [2]连云港市农业科学院,江苏连云港222006 [3]中国农业科学院

出　　处：《中国水稻科学》2011年第4期357-364,共8页Chinese Journal of Rice Science

基　　金：国家自然科学基金资助项目(30871497);国家863计划资助项目(2009AA101101);江苏省品种创新工程资助项目(BE2009301-3,BE2008354);高等学校学科创新引智计划资助项目(B08025)

摘　　要：设置人工长短日照、高低温环境对太湖流域20份晚粳水稻品种的光、温敏感性及基本营养生长期进行分析,结果表种携带感光等位基因E3或E3t;在Se-1位点,携带的主要是非感光等位基因Se-1e,还有部分品种为主效显性感光等位基因Se-1n;另外,大部分品种还携带可以部分抑制Se-1、E1表达的隐性感光抑制因子hd2。Heading dates of 20 late season japonica rice cultivars native to the Taihu Lake region of China were investigated,and their basic vegetative growth（BVG）,photoperiod-sensitivity（PS） and temperature-sensitivity（TS） were analyzed under artificial short-day and natural long-day conditions in Nanjing,as well as artificial high temperature and natural low temperature conditions in winter in Hainan.The results showed that all the cultivars had strong PS,and most of the cultivars had strong TS and short BVG.Regression analysis showed a significant correlation between heading date and PS,indicating PS was the main factor affecting heading date of late season japonica rice cultivars from the Taihu Lake region.Genetic analyses were conducted by using a set of heading date near isogenic lines as tester lines.All these japonica cultivars carried the dominant photoperiod sensitivity allele E_1 and the dominant early-heading gene Ef-1.At the E_2 and E_3 loci,most of the late season japonica cultivars carried the photoperiod insensitivity alleles e_2 and e_3,but some carried the photoperiod sensitivity alleles E_2 and E_3 or E_3t.At the Se-1 locus,these late season japonica cultivars mainly carried recessive photoperiod insensitivity gene Se-1e,others carried Se-1n.In addition,some of the late season japonica cultivars carried the recessive allele hd2,inhibiting the expressions of E_1 and Se-1.

关 键 词：晚粳稻 抽穗期 遗传分析 感光性 感温性 基本营养生长期 

分 类 号：S511.22[农业科学—作物学]