籼型杂种稻米品质性状的核外遗传效应  

EXTRANUCLEAR GENETIC EFFECT OF QUALITY TRAITS IN INDICA HYBRID RICE

作　　者：徐辰武[1] 敖雁[1] 莫惠栋[1] 

机构地区：[1]扬州大学农学院农学系

出　　处：《扬州大学学报（自然科学版）》1998年第2期36-40,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金

摘　　要：采用单一自由度的独立比较方法，研究９个稻米品质性状的核外遗传效应．试验材料为３个籼型不育系（Ａ）及其相应保持系（Ｂ）分别与２个恢复系（Ｒ）杂交而得的１８个正反交杂种的Ｆ２米粒．结果表明：多数性状组合（５４个中有３８个）没有发现（Ｂ×Ｒ）和（Ｒ×Ｂ）的差异，（Ａ×Ｒ）和（Ｂ×Ｒ）则有半数以上性状组合（５４个中有２８个）存在差异．这说明普通栽培稻不同品种间的细胞质对稻米品质大多没有不同影响；稻属不同种的细胞质（野败细胞质对普通栽培稻细胞质）对稻米品质的影响则较不同品种的细胞质为大，但也不是很普遍的．Extranuclear genetic effect of 9 quality traits in indica hybrid rice was investigated by independent comparison of single degree of freedom. The experimental materials were 18 hybrids from 3 sterile lines (A) and their maintainers (B) each mating with 2 restorers (R), including A×R, B×R and R×B. Results showed that the differences of quality traits between B×R and R×B were not found in most cases (38 of 54), and that between A×R and B×R were found to be significant in 28 out of 54 comparisons. This indicates that the effects of fertile cytoplasms among cultivars of O. sativa subsp. indica on quality traits are unusual, but will be extended when contrasted them with sterile cytoplasm from O. rufipogon.

关 键 词：杂种 核外遗传 水稻 稻米 籼型杂种 品质性状 

分 类 号：S511.210.3[农业科学—作物学]