两种密度条件下阿拉伯婆婆纳营养生长对其有性繁殖的影响

从两种密度的生境中随机采集阿拉伯婆婆纳(V eron ica p ersica)为测试材料,对其营养器官和生殖器官的有关指标(根干重、直立茎干重、匍匐茎干重、果实干重、直立茎长、匍匐茎长、匍匐茎数量、直立茎数量、果实数量等)进行测定,探讨该植物在不同密度条件下营养生长对其有性繁殖的贡献。结果表明:不同密度条件下阿拉伯婆婆纳的营养生长对其有性繁殖产生不同程度的影响,果实干重和果实数与直立茎的资源配置比存在显著差异(P<0.05),高密度条件下只有部分营养器官的生长会显著影响其有性繁殖,而低密度条件下所有营养生长都会对其有性繁殖产生影响。

The effects of vegetative growth on the sexual reproduction of Veronica persica from two different habitats with different densities

In order to understand the effects of vegetative growth of Veronica persica on its sexual reproduction from two habitats with different densities,the parameters of V.persica collected from two plots,including the biomass of root,rhizome,shoot and fruit,the lengths of rhizome and shoot,the number of rhizome,shoot and fruit,were measured.The results showed that the vegetative growth had different effects on the sexual reproduction of V.persica from different environments.The results of ANOVA indicated that there were significant differences among dry weights of fruit,resource allocation of fruit and shoot in the two habitats(P<0.05).In the habitat with high density,only a part of vegetative organs had significant effects on sexual reproduction.However,all vegetative organs affected the sexual reproduction in the condition of low density.