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本文分析了太谷显性核不育小麦在育种实践中应用的一些不利因素或限制条件。它们是:(1)在常规育种和远缘杂交中,扩大了母本的种植规模;(2)在轮回选择中,需人工拔除母本群体中的可育株;(3)需要在开花时对不育株进行人工标记,方可便于收获;(4)在没有找到恢复系的情况下,不能用来生产杂交种。这些不利因素可以通过标记性状部分或全部地予以克服。本文论述了太谷显性核不育小麦标记性状研究的若干进展,这些进展主要包括矮秆标记和蓝粒标记两个方面。蓝粒标记的成功,在理论上说,彻底消除了太谷核不育小麦在育种实践中应用的不利因素,特别是使之在杂种优势利用中发挥作用成为可能。
In this paper, some unfavorable factors or restrictive conditions of Taigu Dominant Nuclear Sterile Wheat in breeding practice were analyzed. These are: (1) expanding the female parent in conventional breeding and distant hybridization; (2) in reincarnation, male fertile individuals in the female parent population need to be manually removed; (3) Artificially tagged sterile plants for harvesting purposes; (4) Can not be used to produce hybrids if no restorer line is found. These unfavorable factors can be partially or fully overcome by marking traits. In this paper, some progress on the marker characterization of Taigu Dominant Genic Male Sterile Wheat (Triticum aestivum L.) is discussed. The progress includes two aspects: the dwarf mark and the blue mark. The success of the blue-flagged marker, in theory, completely eliminates the unfavorable factors that Taigu nuclear-sterile wheat is used in breeding practices, and in particular makes it possible to play a role in the utilization of heterosis.