紫葳科具敏感性柱头种性配置状况的研究

Study on Sex Allocation with Sensitive Stigma in Bignoniaceae

[目的]为了找出紫葳科具二裂片敏感性柱头种性配置结构的规律。[方法]选取美国凌霄、两头毛和角蒿为材料,对它们的柱头运动规律、花部结构特征和繁殖系统特点进行一系列调查研究。[结果]花冠开口越大,花柱越长,柱头反应越慢,花朵平均花粉数越多,植株座果率越低。[结论]该研究结果有待在紫葳科其他种中验证。

[Objective] The research aimed to find out the configuration rule of the stigma with two lobes sensitive stigma.[Method] Three common plants with the bilobed sensitive stigma in Bignoniaceae were selected,such as Campsis radicans,Incarvillea arguta and Incarvillea sinensis var.sinensis.A series of initial observation and research on the stigma mobile feature,the flower structure characteristic and the breed system peculiarity of the three plants were conducted.[Result] The bigger the anadem opened,the longer the style was,and the slower the stigma reacted.The slower the stigma reacted,the more the average quantity of pollen was,and the lower rate of fruitage was.[Conclusion] More other plants in Bignoniaceae need be verified.