水稻染色体分带技术的建立,丰富了染色体形态学特征的研究内容,可以更好地区别单个染色体。然而水稻的染色体毕竟太小,染色体核型模式仍难于制定与统一。我们多年实验观察水稻细胞的核仁和随体染色体的数目,水稻染色体的核仁组织区是比较容易鉴别的,用来研究杂交水稻及其三系的细胞学差异和遗传基础,对于配制杂交水稻的组合,测定育性和杂种优势,可能是有一定参考意义的。 The establishment of rice chromosome banding technology has enriched the research content of chromosome morphological characteristics and can better distinguish single chromosomes. However, after all, the chromosomes of rice are too small, and the chromosome karyotype pattern is still difficult to formulate and unify. For many years, we observed the number of nucleolus and satellite chromosomes in rice cells. The nucleolus tissue regions of rice chromosomes were easily identified and used to study the cytological differences and genetic basis of hybrid rice and its three lines. For the preparation of hybrid rice Combinations, determination of fertility and heterosis may be of some reference.