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观察了棉属远缘杂种后代根尖细胞有丝分裂的染色体行为。发现在分裂过程中。出现一系列不正常现象,如体细胞中染色体数目的变异;双核及多核仁细胞;前期和中期染色体分离成2～3群,或有1～3个染色体远离染色体群;后期出现落后染色体,或有“桥”;末期形成有3～4个核的细胞等。棉属远缘杂种体细胞分裂各个时期不正常细胞的百分率,远远低于其花粉母细胞减数分裂时不正常细胞的百分率。
The chromosome behavior of root tip mitosis in cotton hybrids was observed. Found in the splitting process. A series of abnormal phenomena such as chromosome number variation in somatic cells; binuclear and multinucleated cells; segregation of chromosomes into 2 or 3 groups in early and metaphase, or 1 to 3 chromosomes distant from the chromosome group; late lagging chromosomes or There are “bridge”; the end of the formation of 3 to 4 nuclear cells. Cotton distant hybrid somatic cell division of abnormal cells at various stages of the percentage, far less than its pollen mother cell meiosis abnormal cell percentage.