Genotyping the Heading Date of Male-Sterile Rice Line II-32A
文献类型: 外文期刊
第一作者: Xu, JF
作者: Xu, JF;Jiang, L;Wei, XJ;Zhang, WW;Liu, SJ;Chen, LM;Wang, CM;Luo, LG;Wan, JM
作者机构:
关键词: heading date;near-isogenic line;photoperiod-sensitive gene;recessive late-heading gene;rice
期刊名称:JOURNAL OF INTEGRATIVE PLANT BIOLOGY ( 影响因子:7.061; 五年影响因子:6.002 )
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收录情况: SCI
摘要: II-32A, an elite male-sterile line of rice (Oryza sativa L.), has been widely used for the production of hybrid rice seed in China. Heading date in most combinations using II-32A shows transgressive inheritance or similarity to the latter parent, butthe genotype of 11-32A with respect to major genes for heading time is unknown. This limits the further exploitation of this sterile line in breeding and hybrid seed production. Using a number of major gene heading date isogenic lines and heading date QTL near-isogenic lines, we genetically analyzed II-32B under both long- and short-day conditions. We show that II-32B carries two photoperiod-sensitive genes, E1 and E3, a recessive late-heading gene, ef-1, and a photoperiod-sensitive allele, Se-1u. In addition we identified in II-32B a recessive inhibitor for E1 or Se-fand other modified photoperiod-sensitive genes. The heading-date constitution of II-32A was determined to be E_1e_2E_3Se-1uef-1i-Se-1.
分类号: Q94
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