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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．
Independent single-degree-of-freedom methods were used to study the extranuclear genetic effects of nine rice quality traits. The test material consisted of 18 cross-hybrid F2 rice grains derived from three indica CMS lines (A) and their corresponding maintainer lines (B) and two restorer lines (R) respectively. The results showed that most of the traits (B × R) and (R × B) were not found in most trait combinations (38 of 54), while more than half of traits (A × R) and (B × R) In 28) there are differences. The results showed that the cytoplasm of different cultivars generally did not have different effects on the quality of rice. The effects of different cytoplasm types (wild stubble cytoplasm) on the quality of rice were greater than that of different cultivars, but also Not very common.