【摘要】 对中国西藏三联小穗小麦(TTSW)的特有三联小穗性状进行了遗传分析,表明TTSW的三联小穗性状受两对隐性基因控制,并建议将两对新基因定名为Ts1和Ts2;三联小穗性状与TTSW的不良性状(低千粒重,低结实率)无连锁关系。本文还讨论了利用TTSW开展"三联小穗型"新株型超高产杂交小麦育种的可能性。更多还原

【Abstract】 The Tibetan triple-spikelet wheat(TTSW)(Triticum aestivum L.concv.Tripletum)was a special landrace of common wheat collected from Tibet,China.It possessed a genetic stable character of triple-spikelets,and produced more than 50 spikelets per spike and about 150 florets with normal number of tillers,normal length of spikes,and well-developed seeds. Inheritance of genes for the triple-spikelets in TTSW was genetically analyzed.The results indicated that the triple-spikelet character in TTSW was controlled by two recessive genes.Therefore,it was suggested that the genes controlling this character of triple-spikelets were designated as Ts1 and Ts2 ,respectively.These genes could be used as genetic resources for increasing number of spikelets per spike for high-yield breeding in hybrid wheat.更多还原