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通过对大豆雄性不育突变体NJ89-1不育株与可育株小孢子母细胞减数分裂的比较研究,发现NJ89-1雄性不育株小孢子母细胞减数分裂高度变异,联会异常,出现单价体、染色体落后、染色体桥、染色体不均等分离等;在形成四分体的早期阶段,小孢子母细胞里见到微核,以后产生大小不等的二分体、三分体、四分体及多分体;单核小孢子阶段小孢子似仍饱满、细胞质尚浓密、细胞核也明显,少数小孢子的萌发孔不为通常的3数,而为4个或5个,最终形成染色体数不平衡、大小不等、空瘪、或聚集成块的退化花粉.
A comparative study on the meiosis of microspore mother cells of NJ89-1 male sterile mutant NJ89-1 showed that the meiosis of NJ89-1 male sterile plants was highly variable and the association was abnormal , Appear monovalent body, chromosome backward, chromosome bridge, chromosomal unequal separation; in the early stages of the formation of tetrad, microspore mother cells to see the micronucleus, after the size of the resulting bisected, trisomy, Tetrad and multi-spore; microspore-like microspore stage is still full, cytoplasm is still dense, the nucleus is also obvious, a small number of microspore germination pores are not the usual 3, but 4 or 5, the final formation of chromosome The number of unbalanced, size, empty, or gathered into pieces of the degradation of pollen.