本文报导和分析了三倍体糖甜菜小孢子母细胞减数分裂的过程。对中期Ⅰ细胞的单价、二价、三价和四价构型做了统计,对末期Ⅰ和末期Ⅱ的染色体分离情况做了分析.此外,还发现了多种染色体异常行为,本文认为这些异常现象可能是由于减数分裂基因功能的改变,或是由三倍染色体数造成的基因突变。 This paper reports and analyzes the meiosis process of triploid sugar beet microspore mother cells. The monovalent, divalent, trivalent, and tetravalent configurations of metaphase I cells were analyzed, and the chromosomal segregation of late stage I and terminal stage II was analyzed.In addition, a variety of chromosomal abnormalities were also found, which are considered as abnormal The phenomenon may be due to changes in the function of meiotic genes, or mutations caused by three times the number of chromosomes.