玉米粗线期染色体G带及螺旋的研究

STUDIES ON G-BANDS AND MACROCOILS IN MAIZE PACHYTENE CHROMOSOMES

用风油精活体诱导玉米花粉母细胞粗线期染色体Ｇ带和螺旋的结果表明。Ｇ带带纹众多，分布于整个染色体上，带纹数目与染色体收缩程度相关。相同时期不同细胞的Ｇ带数量和位置稳定并可重复。同源染色体联会后的二价体在纵向上的螺纹数与二价体的收缩程度有关，螺旋的方向具有多样性。

The EB(Essential Balm)method was adopted to study,the G-bands and macrocoilson the maize pachytene chromosome. The G-bands obtained were numerous and alongthe whole coromosome,The number of the G-bands was much interrelated with the con-densation of chromosomes and at the similar stage,was stable and reproducable. Themacrocoils of the bivalent chromosomes were o6served. The gyro-number changed withchromosome condensation and the direction of coils has shown different natterns.