菰核型分析和性细胞分裂的异常

本文进行了菰（ＺｉｚａｎｉａＣａｄｕｃｉｆｌｏｒａ（Ｔｕｒｃｚ．）Ｎａｎｄ－ｍａｚｚ．）染色体的核型分析，报道了菰染色体数目为ｚｎ＝３４，菰的花粉母细胞在减数分裂过程中，有一定数量的细胞表现了染色体的不规则行为，大部分表现在染色体的轻微落后和中期有明显的核仁存在，说明菰性细胞染色体行为不是完全稳定的，目的在于为野生菰在育种中的利用提供理论依据。

WILD RICE KARYOTYPE AND ABNORMALITIES OF P. M. C. MEIOSIS

The chromosome analysis of laryotype and chromosome number (zn=34) of wild rice (Zizania Caduciflora (Turcz.)Hand-Mazz. )were reported in this paper. The variation of chromosomal action and various abnormalities in metaphase of meiosis of P. M.C. were obstrved, for example, laggeol or premature separation of chromosome and the existance of obvious nucleolns in metaphase. This suggested that the chromosome of wild rice sexnal cell were unstable during separation.