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A new gene controlling hybrid sterility between Oryza sativa and Oryza longistaminata

文献类型： 外文期刊

作者： Zhao, Jiying 2 ; Li, Jing 1 ; Xu, Peng 1 ; Zhou, Jiawu 1 ; Hu, Fengyi 1 ; Deng, Xianneng 1 ; Deng, Wei 1 ; Tao, Dayun 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Food Crops Res Inst, Kunming 650205, Peoples R China

2.Yunnan Univ, Sch Life Sci, Kunming 650091, Peoples R China

关键词： Oryza longistaminata;Hybrid sterility;One-locus allelic interaction model

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

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收录情况： SCI

摘要： Oryza longistaminata is an excellent gene pool to improve Asian cultivated rice Oryza sativa. However, hybrid sterility between O. longistaminata and O. sativa hinders application of desirable genes in rice production. In order to further understand the nature of interspecific hybrid sterility between these two species, near isogenic lines (NILs) were raised with RD23, an indica cultivar from Thailand, as background and an accession of O. longistaminata as donor. Using two NIL/RD23 F-2 populations, a new pollen sterility gene, denoted as HYBRID STERILITY 44(t) or S44(t) in abbreviation, was mapped between simple sequence repeat markers RM5814 and RM20695 on the long arm of rice chromosome 6. The genetic pattern of S44(t) follows one-locus allelic interaction model. The interaction between S44(t)-sativa and S44(t)-longistaminata leads to partial abortion of male gametes carrying the allele of S44(t)-sativa in the heterozygotes, but the spikelet fertility is not affected by S44(t).

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