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梓叶槭半同胞家系苗期生长性状遗传分析

Genetic Analysis of Growth Characteristics of Acer catalpifolium Half-sib Family at Seedling Stage

  • 摘要: 研究梓叶槭苗期的生长表现,筛选苗期生长性状表现好的家系,为梓叶槭的保护和开发提供参考。以梓叶槭平武种群的15个半同胞家系播种苗为研究对象,分析和比较了苗高和地径性状的生长情况。结果表明,梓叶槭半同胞家系苗高和地径性状均达到了显著差异;苗高和地径家系遗传力较大,均在0.9以上;苗高和地径呈极显著正相关;苗高和地径遗传系数分别达到30.59%和29.06%,遗传改良潜力较大;筛选了2个优良半同胞家系。

     

    Abstract: In order to provide reference for the protection and development of Acer catalpifolium, the growth performance of Acer catalpifolium at seedling stage was studied, and the families with good growth traits at the seedling stage were screened. Fifteen half-sib families of Acer catalpifolium were used as the research object, the growth of seedling height and ground diameter traits were analyzed and compared. The results showed that there were significant differences in seedling height and ground diameter of half-sib families of Acer catalpifolium. The family heritability of seedling height and ground diameter was greater than 0.9. There was a significant positive correlation between seedling height and ground diameter. The genetic coefficients of seedling height and ground diameter reached 30.59% and 29.06%, respectively, with great potential for genetic improvement. Two excellent half-sib families were screened.

     

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