杂交水稻表型、杂种优势和配合力的关系

doi:10.14088/j.cnki.issn0439-8114.2020.24.005

湖北农业科学 ›› 2020, Vol. 59 ›› Issue (24): 24-28.doi: 10.14088/j.cnki.issn0439-8114.2020.24.005

杂交水稻表型、杂种优势和配合力的关系

陈俊孝, 游艾青, 刘凯

湖北省农业科学院粮食作物研究所/粮食作物种质创新与遗传改良湖北省重点实验室,武汉 430064

收稿日期:2020-10-15 出版日期:2020-12-25 发布日期:2021-01-21
通讯作者: 刘凯,助理研究员,主要从事水稻籼粳杂种优势利用研究,(电子信箱)liukai11153@126.com。
作者简介:陈俊孝(1988-),男,河南信阳人,助理研究员,博士,主要从事水稻杂种优势利用研究,(电话)13260512927(电子信箱)cjx881112@163.com
基金资助:
国家重点研发计划“七大农作物育种”专项(2017YFD0100400); 湖北省重点研发计划(2020BBA031); 粮食作物种质创新与遗传改良湖北省重点实验室开放课题(2019lzjj02)

The relationship among phenotype, heterosis and combining ability of hybrid rice

CHEN Jun-xiao, YOU Ai-qing, LIU Kai

Hubei Key laboratory of Food Crop Germplasm and Genetic Improvement/Institute of Food Crops, Hubei Academy of Agricultural Sciences, Wuhan 430064, China

Received:2020-10-15 Online:2020-12-25 Published:2021-01-21

摘要/Abstract

摘要： 利用数字化考种机并结合人工考察对杂交水稻群体的产量相关性状进行了考察,构建了一套不完全双列杂交群体,探讨产量相关性状的表型、一般配合力、特殊配合力和F₁的杂种优势之间的相互关系。结果表明,所有性状的表型、亲本的一般配合力、F₁的特殊配合力和F₁的杂种优势之间均表现出相关性。每个F₁的表型值与亲本的一般配合力和该F₁的特殊配合力均呈正相关,GCA和SCA对不同农艺性状的贡献率不同;亲本的一般配合力、F₁的特殊配合力均和特定组合的产量的杂种优势显著正相关,且F₁的特殊配合力对杂种优势的贡献更大;亲本一般配合力与F₁特殊配合力之间呈负相关或者没有相关性,杂种优势与亲本间的遗传距离、杂合度之间没有显著相关性。

关键词: 杂种优势, 不完全双列杂交, 一般配合力, 特殊配合力

Abstract: We constructed a NCII population and performed a high-throughput phenotyping facility (HRPF) and combined with artificial investigation to measure all traits, to investigate the relationship between phenotype, general combining ability, special combining ability and heterosis of yield-related traits. The results showed that there were high correlations among phenotype, SCA, GCA and heterotic advantage for all traits. The phenotype was always positively correlated with GCA and SCA, but GCA and SCA contributed variously to different agronomic traits;heterotic advantage always positively correlated with GCA and SCA, and SCA contribute more to the heterosis. GCA always negatively or not correlated with SCA, the correlations with heterosis and parent genetic distance (PGD) and observed heterozygosity (OH) were not particularly evident in our data.

Key words: heterosis, NCII population, general combining ability, specific combining ability

中图分类号:

S511

陈俊孝, 游艾青, 刘凯. 杂交水稻表型、杂种优势和配合力的关系[J]. 湖北农业科学, 2020, 59(24): 24-28.

CHEN Jun-xiao, YOU Ai-qing, LIU Kai. The relationship among phenotype, heterosis and combining ability of hybrid rice[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(24): 24-28.

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杂交水稻表型、杂种优势和配合力的关系

The relationship among phenotype, heterosis and combining ability of hybrid rice

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