欢迎访问《棉花学报》! 今天是

棉花学报 ›› 2017, Vol. 29 ›› Issue (2): 119-127.doi: 10.11963/issn.1002-7807.201702001

• 研究与进展 •    下一篇

陆地棉早熟性状多世代联合遗传分析

赵树琪(),庞朝友,魏恒玲,王寒涛,李黎贝,宿俊吉,范术丽(),喻树迅   

  1. 中国农业科学院棉花研究所/棉花生物学国家重点实验室,河南 安阳 455000
  • 收稿日期:2016-03-17 出版日期:2017-03-15 发布日期:2017-03-15
  • 通讯作者: 范术丽,喻树迅 E-mail:shuqi0546@163.com;ysx195311@163.com
  • 作者简介:赵树琪(1989―)男,硕士研究生,shuqi0546@163.com
  • 基金资助:
    国家现代农业产业技术体系——棉花产业技术体系(CARS-18-03)

Genetic Inheritance of Earliness Traits in Upland Cotton (Gossypium hirsutum L.) Inferred by Joint Analysis of Multiple Generations

Shuqi Zhao(),Chaoyou Pang,Hengling Wei,Hantao Wang,Libei Li,Junji Su,Shuli Fan(),Shuxun Yu   

  1. Institute of Cotton Research, Chinese Academy of Agricultural Sciences / State Key Laboratory of Cotton Biology, Anyang, Henan 455000, China
  • Received:2016-03-17 Online:2017-03-15 Published:2017-03-15
  • Contact: Shuli Fan,Shuxun Yu E-mail:shuqi0546@163.com;ysx195311@163.com

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F2:3 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 F2:3) 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