文献类型： 外文期刊
作者： Xu, JF 1 ; Jiang, L 2 ; Wei, XJ 2 ; Zhang, WW 2 ; Liu, SJ 2 ; Chen, LM 3 ; Wang, CM; Luo, LG; Wan, JM;
作者机构： 1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Res Ctr Jiangsu Plant Gene Engn, Nanjing 210095, Peoples R China
2.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Res Ctr Jiangsu Plant Gene Engn, Nanjing 210095, Peoples R China; Jiangxi Acad Agr Sci, Nanchang 330200, Peoples R China
3.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Res Ctr Jiangsu Plant Gene Engn, Nanjing 210095, Peoples R Chi
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.
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