陆地棉早熟性状多世代联合遗传分析

doi:10.11963/issn.1002-7807.201702001

摘要/Abstract

摘要： 【目的】旨在探讨连续世代陆地棉早熟性状遗传规律。【方法】以陆地棉中751213和鲁棉研28为亲本,通过对P₁,P₂,F₁,F₂和F_2:3 5个世代联合分析,研究株高、果枝始节、始节高度、花铃期、播种至开花和全生育期等早熟性状的遗传模型。【结果】株高和果枝始节的最佳模型为1对加性-显性主基因+加性-显性-上位性多基因混合模型（D）;播种至开花时间最佳模型为1对完全显性主基因+加性-显性多基因模型（D-3）;全生育期最佳模型为2对加性-显性-上位性主基因+加性-显性-上位性多基因模型（E）;花铃期和始节高度最佳模型均为1对负向完全显性主基因+加性-显性多基因模型（D-4）。【结论】上述对陆地棉早熟性状的混合遗传模型分析结果,有助于阐明陆地棉早熟性状遗传规律。

关键词: 陆地棉; 早熟性状; 遗传模型; 多世代联合分析

Abstract:

[Objective] This study aimed to research patterns of inheritance of earliness-related traits in continuous generations of upland cotton. [Method] The inheritance of six earliness traits was analyzed by joint segregation analysis under a mixed genetic model comprising a major gene plus polygenes in five generations (P₁, P₂, F₁, F₂ and F_2:3) derived from a Zhong 751213×Lumianyan 28 cross. [Result] Plant height and the node of the first fruiting branch were fitted by a model involving a pair of additive-dominant major genes plus additive-dominant-epistatic polygenes (D). Time from sowing to flowering was fitted by a model corresponding to a pair of completely dominant main genes plus additive-dominant polygenes (D-3). The entire growing period was fitted by a model representing a pair of additive-dominant-epistatic major genes plus additive-dominant-epistatic polygenes (E). The flowering and boll-setting period and the height of the node of the first fruiting branch were fitted by a model consisting of a pair of negatively completely dominant main genes plus additive-dominant polygenes. [Conclusion] The results of this genetic analysis of earliness traits using a major gene plus polygene mixed inheritance model should aid the elucidation of genetic mechanisms underlying earliness characteristics of upland cotton.

Key words: upland cotton; earliness traits; genetic model; combined analysis of generations

赵树琪,庞朝友,魏恒玲,王寒涛,李黎贝,宿俊吉,范术丽,喻树迅. 陆地棉早熟性状多世代联合遗传分析[J]. 棉花学报, 2017, 29(2): 119-127.

Shuqi Zhao,Chaoyou Pang,Hengling Wei,Hantao Wang,Libei Li,Junji Su,Shuli Fan,Shuxun Yu. Genetic Inheritance of Earliness Traits in Upland Cotton (Gossypium hirsutum L.) Inferred by Joint Analysis of Multiple Generations[J]. Cotton Science, 2017, 29(2): 119-127.

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链接本文: http://journal.cricaas.com.cn/Jweb_mhxb/CN/10.11963/issn.1002-7807.201702001

http://journal.cricaas.com.cn/Jweb_mhxb/CN/Y2017/V29/I2/119

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