Genetic analysis on the fertility restoration by Triticum aestivum cv. Chinese Spring against photoperiod-sensitive cytoplasmic male sterility

K. Murai, K. Tsunewaki
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引用次数: 30

Abstract

Triticum aestivum cv. Norin 26 with Aegilops crassa cytoplasm shows photo-period-sensitive cytoplasmic male sterility (PCMS). This alloplasmic line is almost completely male sterile under a long-day condition (15 h light period), but highly male fertile under a short-day condition (14.5 h light period). The alloplasmic line of T. aestivum cv. Chinese Spring with the same cytoplasm does not express PCMS. Conventional and telosomic analyses revealed that the fertility restoration manifested by Chinese Spring is controlled mainly by a single dominant gene (designated Rfd1) located on the long arm of chromosome 7B, and that a large number of modifiers are involved in modifying the level of fertility restoration. The function of the Rfd1 gene is expressed sporophytically. A slight certation was observed between the two types of pollen grains, one carrying and the other not carrying this gene, under the presence of Ae. crassa cytoplasm.
小麦(Triticum aestivum)恢复育性的遗传分析。中国春抗光敏性细胞质雄性不育
小麦。norin26与天蚕细胞质表现为光周期敏感细胞质雄性不育(PCMS)。该同种异质系在长日照条件下(15 h光照周期)几乎完全雄性不育,但在短日照条件下(14.5 h光照周期)具有高度雄性可育性。aestivum cv.的异质系。具有相同细胞质的中国春不表达PCMS。常规分析和端粒分析表明,中华春表现出的育性恢复主要由位于7B染色体长臂上的一个显性基因Rfd1控制,并且有大量修饰因子参与了育性恢复水平的调节。Rfd1基因的功能是通过孢子体表达的。在伊蚊的存在下,两种携带和不携带该基因的花粉粒之间有轻微的鉴定。菌胞浆。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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