波斯婆婆纳营养生长特点及其对有性繁殖贡献

Characteristics of Vegetative Growth of Veronica persica and Their Contribution to Its Sexual Reproduction

以随机采集的47株波斯婆婆纳为测试材料,对其营养器官和繁殖器官的有关指标进行测量,探讨其营养生长对有性繁殖的贡献。结果表明:在没有密度制约、环境条件一致的情况下,波斯婆婆纳个体间存在很大差异,但不同构件间的资源配置方式在不同个体间却比较一致;直立茎数量、直立茎长度和直立茎干重与果实数量之间均呈较高的相关性,匍匐茎主要通过影响直立茎的空间分布状况和数量而间接地影响果实的产量,匍匐茎还可减少果实生产过程中的一些生态风险。

Certain indexes of vegetative and reproductive organs of 47 individuals of Veronica persica were measured for understanding the contribution of vegetative growth to its sexual reproduction. The results showed that morphological parameters of V.persica collected from the same habitat without density restriction were different, but the allotting patterns of resources among different individuals were unanimous. The fruit number positively correlated with the shoot number, the shoot length and the shoot dry weight, rhizome influenced the fruit production through affecting the densities of shoots. In fact, rhizome can reduce certain ecological risks of V.persica during the fruit production.