桃(Prunus persica)品种资源结果习性遗传多样性与评价指标探讨Diversity and the evaluating criteria of some fruiting characters of peach genetic resources
方伟超;王力荣;朱更瑞;
摘要(Abstract):
通过对桃品种资源数据库进行统计分析,展示桃种质资源结果习性性状的遗传多样性,并提出其数值分类指标和参照品种,为桃种质资源描述的规范化、标准化提供依据。以386~411份品种资源为试材,研究了与结果习性有关的4个指标的遗传多样性,结果表明单花芽复花芽比率具有最大的遗传多样性,遗传变异系数达到101%,其次变异系数依次为花叶芽比率37.50%、花芽起始节位32.49%、节间长度12.61%;根据遗传多样性分布状况,提出5级数值分级指标和参照品种,其中3级作为中间级;每个性状的每个等级均有2个参照品种,分别为亚洲品种和欧美品种,且尽量选择育种者公知或广泛栽培的品种。
关键词(KeyWords): 桃;结果习性;遗传多样性;评价
基金项目(Foundation): 国家科技基础条件平台重点资助项目(2005DKA21002-17)
作者(Author): 方伟超;王力荣;朱更瑞;
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DOI:
参考文献(References):
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