摘要
[目的]了解井冈红米米色的遗传规律。[方法]用井冈红米品种红米3号与无色米品种蜀恢5279、311、R207作正反交,调查统计子代种子颜色及数量。[结果]结果表明:杂种F1种子颜色由其所着生的母本植株基因型决定。以红米3号做母本时,所结F1种子均为红色;以蜀恢5279、311、R207为母本时,所结F1种子均为无色。正反交F1所产生的F2种子均为红色。以红米3号做母本时,F3群体中红色种子的单株与无色种子的单株呈3∶1分离;以无色米做母本时,F3群体中红色种子的单株与无色种子的单株分离比接近3∶1,但红色种子的单株数低于期望值,无色种子的单株数高于期望值。F3群体中红米单株间米色程度存在差异。[结论]根据杂种F1、F2和F3代种子颜色和植株分离比例,井冈红米品种红米3号种子红色表现型由单显性基因控制,并受母性影响和微效基因的修饰作用。
[Objective]Tlie researeh aimed to study the heredity rules of Jinggang red rice seed color. [Method]Reciprocal crosses experiments were carried out between Jinggang red rice No.3 and achromatic rice Shuhui 527,9311, R207 . And the color and number of filial generations seeds were investigated and counted. [Result]The results revealed that the seed color of F1 was determined by its female parent. Furthermore, all F2 seeds displayed red phenotype. When Jinggang red rice No.3 was female , all F3 population plants segregated into red and achromarism phenotypic classes with ratio of 3:1. When acluomatte rice as Shuhui 527,9311,R207 were female, the number of red phenotypic plants in F3 population was less than that was expected with ratio of 3:1, whether the number of achromatism phenotypic plants was more than that was expected. Furthermore, the degree of red seed color was different among red phenotypic plants in F3 population. [ Conclusion] It was suggested that the red phenotype of Jinggang red rice No.3 was determined by a dominant, manogene with maternal effect and modified by minor gene
出处
《安徽农业科学》
CAS
北大核心
2009年第12期5426-5427,共2页
Journal of Anhui Agricultural Sciences
基金
江西省教育厅科技项目(赣教技字[2007]324号)
关键词
红米
颖果皮
遗传
母性影响
Red rice
Caryopsis coat
Heredity
Maternal effect