水稻核不育系4个柱头性状的遗传分析  

Genetic Analysis of Four Stigma Traits with Genic Male Sterile Line in Rice(Oryza sativa)

作　　者：江建华[1] 党小景 姚文豪 胡梦竹 王雨停 胡长敏[1] 张瑛[1] 王德正[1] Jianhua Jiang;Xiaojing Dang;Wenhao Yao;Mengzhu Hu;Yuting Wang;Changmin Hu;Ying Zhang;Dezheng Wang(Rice Genetic Breeding Key Laboratory of Anhui Province,Institute of Rice Research,Anhui Academy of Agricultural Sciences,Hefei 230031,China;Anhui Science and Technology University,Fengyang 233100,China)

机构地区：[1]安徽省农业科学院水稻研究所,水稻遗传育种安徽省重点实验室,合肥230031 [2]安徽科技学院,凤阳233100

出　　处：《植物学报》2021年第3期284-295,共12页Chinese Bulletin of Botany

基　　金：水稻遗传育种安徽省重点实验室开放基金(No.SDKF-201904);国家自然科学基金(No.31601374)。

摘　　要：为改良水稻(Oryza sativa)核不育系柱头性状提供遗传信息,调查了粳型核不育系7001S、籼型核不育系Z913S及其杂交、自交获得的F1、F2和F2:3群体的4个柱头性状,分析了4个性状间的相关性,并利用主基因+多基因遗传模型对2个世代4个性状进行遗传分析。结果表明,4个性状两两间呈极显著正相关,相关系数介于0.274–0.897之间。除F2:3群体中花柱长度和柱头外露率分别表现出受2对加性-显性主基因和1对负等效加性-显性主基因+多基因控制外,F2和F2:3群体的柱头长度、花柱长度、柱头-花柱总长度以及柱头外露率均表现出受2对主基因和多基因控制,且F2:3群体中控制花柱长度的主基因表现出加性-显性效应,其余均表现出加性-显性-上位性效应。2个世代中4个性状均以主基因遗传为主。To provide genetic information suitable for improving stigma-related traits of genic male sterile lines in rice.We investigated four stigma-related traits of 7001S(japonica genic male sterile line,P1),Z913S(indica genic male sterile line,P2),F1(P1×P2),F2 and F2:3.Coefficients of linear correlation among four stigma-related traits were calculated,and genetic patterns were analyzed using mixed major-gene plus polygene inheritance models.We found an extremely significant linear positive correlation among four stigma traits,and the correlation coefficients were between 0.274 and 0.897.Genetic analysis revealed that,style length(SYL)and percentage of exserted stigma(PES)were controlled by two major genes with additive-dominant effects and one major gene with additive-equal-negative-dominant effects plus polygenes in F2:3,respectively.Stigma length(STL),SYL(except F2:3),the sum of stigma and style length(TSSL),and PES(except F2:3)were controlled by two major genes plus polygenes in F2 and F2:3.The two major genes expressed additive-dominant-epistatic effects but expressed additive-dominant effects of SYL in the F2:3 populations.Four stigma traits were mainly governed by major genes in two generations.

关 键 词：水稻 核不育系 柱头性状 主基因+多基因模型 遗传分析 

分 类 号：S511[农业科学—作物学]