Pisum sativum F2与辐照F2衍生系的三重试验交叉分析。

Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-10-01 DOI:10.1139/G86-103

D. S. Virk, D. Multani, P. Virk, M. Verma, N. Singh

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引用次数: 1

摘要

以杂交品种‘Bonneville’× t163的正常和辐照F2种子为选育材料，采用三联试杂交设计选育F7和RF7纯种系。用两个表型极端系及其F1作为对照和辐照材料的测试材料。上位性通常不是变异的重要组成部分。加性成分最重要，显性成分占3 / 10。辐照后，由于诱导的新等位基因的加性和显性效应小于其所取代的原等位基因所产生的加性和显性效应，其加性和显性成分普遍减少。关键词:三重杂交，辐照，单种遗传，遗传分析，豌豆

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Triple testcross analysis of F2 and irradiated F2-derived lines of Pisum sativum L.

The triple testcross breeding design was applied to a set of F7 and RF7 pure-breeding lines derived from normal and irradiated F2 seeds of the cross 'Bonneville' × T 163. Two phenotypically extreme lines and their F1 were used as testers in both control and irradiated materials. Epistasis was, in general, not an important component of variation. Additive component was the most important, while dominance was detected in 3 of 10 cases. The additive and dominance components in general decreased following irradiation as a result of additive and dominance effects of induced new alleles being smaller than those generated by the original alleles they replaced.Key words: triple testcross, irradiation, single seed descent, genetic anaylsis, pea.

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Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie

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