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冬小麦产量相关性状鉴定与筛选

Identification and Screening of Winter Wheat Yield-Related Traits

  • 摘要: 为了筛选综合性状优异的冬小麦种质资源,探究其主要农艺性状的遗传特性,以17份冬小麦种质资源为材料,对其生育期、株高、穗长、每穗小穗数、不孕小穗数、穗粒数、千粒重和收获穗数8个性状对产量的影响进行鉴定。结果表明,通过相关分析收获穗数、每穗小穗数和穗粒数对产量有较大的直接作用,说明在一定基础上增加收获穗数、每穗小穗数和穗粒数可以实现冬小麦高产;通过聚类分析将参试的种质资源分为3个类群,筛选出3份高产材料(新冬33号、金冬麦040、金冬麦052),这3份材料可作为理想的高产亲本加以利用。在主成分分析中,选取累积贡献率为76.159%的前3个主成分来评价17份冬小麦资源,揭示了不同冬小麦资源的表型特异性。

     

    Abstract: In order to screen the germplasm resources of winter wheat with excellent comprehensive traits and explore the genetic analysis of their main agronomic traits, 17 winter wheat germplasm resources were used as materials to identify the effects of their growth period, plant height, spike length, spikelet number per spike, infertility spikelet number, grain number per spike, thousand grain weight and harvested spike number 8 personality traits on yield. The results showed that the number of harvested spike number, the spikelet number per spike and the grain number per spike had a large direct effect on the yield through correlation analysis, indicating that the number of harvested spike number, the spikelet number per spike and the grain number per spike could achieve high yield by increasing on a certain basis. The germplasm resources were divided into three taxa by cluster analysis, and three high-yield materials(Xindong No.33, Jindong wheat 040, and Jindong wheat 052) were screened, which could be used as ideal high-yield parents. In the principal component analysis, the cumulative tribute was selected. The top 3 principal components with a yield of 76.159% were used to evaluate 17 winter wheat resources. The phenotypic specificity of different winter wheat resources was revealed.

     

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