Dioecism of the genusCallicarpa (Verbenaceae) in the Bonin (Ogasawara) Islands
Dioecism of the genusCallicarpa (Verbenaceae) in the Bonin (Ogasawara) Islands
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小笠原群岛紫珠属（马鞭草科）的雌雄异株
DOI：
10.1007/bf02488411
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
N. Kawakubo
中科院分区：
文献类型：
--
作者：
N. Kawakubo
本文报道了三种花的形态和功能。glabra、光萼苔C. nisnimurae和C. subpubescens，特有的小笠原群岛，揭示了所有三种雌雄异株。雄株花柱短，子房不育，而雌株花柱长，花粉粒不萌发。这种雌雄异株现象在马鞭草科植物中未见报道。这种带有不发芽花粉粒的奇特的有性系统可能是昆虫传粉者的一种奖励。
The morphology and function of the flowers of three species of the genusCallicarpa, C. glabra, C. nisnimurae andC. subpubescens, endemic to the Bonin Islands, revealed that all three species were dioecious. Male plants had short-styled flowers with sterile ovaries, while female plants had long-styled flowers with non-germinating inaperturate pollen grains. Such dioecism has never been reported from the family Verbenaceae. This curious sexual system with non-germinating pollen grains may have been maintained as a reward to insect pollinators.