巴西橡胶树性器官加倍技术的研究

Doubling Sexual Organs of Hevea Brasiliensis

利用秋水仙素对巴西橡胶树性器官进行加倍诱导，获得二倍性的大小孢子。研究结果表明：（1）处理后外部形态变异与器官加倍具有相关性。（2）采用包棉花法，秋水仙素浓度为0．25％，有较高的诱导率。（3）同一雄花各花药加倍可以同步，同一花药中花粉的加倍率可达100％。

The sexual organs derived from Hevea Brasiliensis were treated with colchicine,and diploid megaspores and microspores were induced. Results showed interrelation betweenvariation of external morphology and doub1ing of sexual organs after treatment. With cotton coating,the o- 25% colchicine treatment gave a higher induction rate. Doub1ing ofevery anther in the same ma1e flower was synchronal and doubling rates of pollens inthe same anther were as high as 100%.