詹姆斯非洲菊的遗传变异和遗传力研究

Priyanka Prajapati, A. Singh, A. Senapati
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引用次数: 8

摘要

对非洲菊(gerbera jamesonii) 12个基因型的13个性状进行遗传变异、遗传力、遗传进步率和遗传进步率的测定。所研究的各种性状均有显著差异。单株叶数、单株丛数和叶面积指数的表型变异系数和基因型变异系数最高,表明这些性状具有足够的遗传变异,可供选择。单株叶数、叶面积指数和鲜重的高遗传力和高遗传进阶表明这些性状存在加性基因效应,适合直接选择。在花瓣厚度、茎中空度、鲜重、花径、茎径和颈径等性状上均表现出明显的非加性基因效应,因此可以对这些性状进行杂种优势育种。以单株叶数、单株丛数和叶面积指数为基础进行选择,对进一步的育种计划更为有效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Genetic variability and heritability studies in Gerbera jamesonii bolus
Twelve genotypes of gerbera (Gerbera jamesonii) were evaluated to determine genetic variability, heritability, genetic advance and genetic advance as percent for thirteen characters. Significant variations were recorded for the various characters studied. Phenotypic and genotypic coefficients of variation were highest for the number of leaves per plant, number of clumps per plant and leaf area index, indicating presence of sufficient genetic variability for selection in these traits. High heritability and high genetic advance for number of leaves per plant, leaf area index and fresh weight indicated the presence of additive gene effects in these traits and their amicability for direct selection. The non additive gene effects were evident in petal thickness, hollowness of the stalk, fresh weight, flower diameter, stalk diameter and neck diameter thus warranting use of heterosis breeding for these characters. The selection on the basis of number of leaves per plant, number of clumps per plant and leaf area index will be more effective for further breeding programme.
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