摘要
[目的]为给云南省小麦新品种选育以及物种保护研究提供依据。[方法]对29份云南铁壳麦进行了变种分类和基于14个农艺性状的遗传多样性分析。[结果]云南铁壳麦A14为一未定名的白粒变种,其余28份材料分为10个已定名变种类型;云南铁壳麦农艺性状变异较丰富,以不孕小穗数变异系数最大(22.59%),抽穗期的变异最小;云南铁壳麦7个农艺性状的多样性指数变化较大,为1.55~2.04。29份云南铁壳麦分为3个类群,但同一变种类型的云南铁壳麦并未整齐的聚为1类;云南铁壳麦A13、A14和A21间的遗传关系相对较近,而与其他云南铁壳麦间的遗传关系相对较远。[结论]云南铁壳麦在农艺性状上存在较为广泛的遗传多样性。
[Objective] The present study was conducted to provide basis for researches on breeding new wheat varieties and conserving rare species in Yunnan Province.[Method] 29 materials of Triticum aestivum ssp.yunnanense King(Yunnan Hulled Wheat)were taken for the research on classification and genetic diversity analysis based on 14 agronomic traits.[Result] Yunnan hulled wheat A14 could be an unnamed white seed variety,and other 28 materials were divided into 10 named mutation types;Yunnan hulled wheat was rich in variability of agronomic traits,in which the coefficient of variance(CV)of sterile spikelet number was the largest(22.59%),while the CV of earing period was the lowest(3.71%);the diversity indexes of seven qualitative characters ranged from 1.55-2.04.Moreover,the 29 Yunnan hulled wheat could be divided into 3 clusters by the UPGMA analysis.However,Yunnan hulled wheat varieties originating from similar mutation types did not completely cluster together.The genetic relationship was relatively close among A13(YT-35),A14(YT-36)and A21(YT-37),but the faster genetic relationship was observed between them and other Yunnan hulled wheat varieties.[Conclusion] Yunnan hulled wheat had an extensive genetic diversity in agronomic traits.
基金
Supported by the Key Programs of Yunnan Province(2008CD010)
the National Natural Science Foundation of China(30760119)
Yunnan Provincial Science and Technology of Wheat UQECProgram(2010BB005)~~
关键词
云南铁壳麦
农艺性状
遗传多样性
Triticum aestivum ssp.Yunnanense King(Yunnan hulled wheat)
Agronomic traits
Genetic diversity