摘 要 ：以响叶杨(P opu lus ad enop od a M ax im.)为材料,就大、小孢子母细胞减数分裂进程及其对应关系进行了研究.结果表明:响叶杨大、小孢子母细胞减数分裂进程与花芽外部形态存在一定的相关性,可从花芽外部形态变化估计大、小孢子母细胞减数分裂进程;响叶杨大、小孢子母细胞减数分裂进程亦存在一定的时序性相关,当雄配子发育至单核靠边期时,大孢子母细胞减数分裂进入粗线期;通过相同培养条件下小孢子发育进程的观察,可以实现响叶杨大孢子母细胞减数分裂进程的即时判别.
Abstract:Meiosis stages and their corresponding relations of Populus adenopoda Maxim.megasporocytes and microsporocytes were studied.The results showed that the meiosis stages appeared to relate to flower-bud morphology to a certain extent and thus flower bud morp