Insect and wind pollination of an alpine biennial Aconitum gymnandrum (Ranunculaceae)

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	Insect and wind pollination of an alpine biennial Aconitum gymnandrum (Ranunculaceae)
	Duan, Y. W.1; Zhang, T. F.1; He, Y. P.1; Liu, J. Q.1,2
	2009-11-01
发表期刊	PLANT BIOLOGY
ISSN	1435-8603
卷号	11 期号:6 页码:796-802
文章类型	Article
摘要	Wind pollination can provide reproductive insurance for animal-pollinated dioecious plants in the absence of available pollinators, but combinations of insect and wind pollination (ambophily) have rarely been studied in hermaphrodite herbs. We examined the stable occurrence of insect pollination and wind pollination over 4 years in a population of a biennial Aconitum species (A. gymnandrum) with actinomorphic and degenerate sepals. The total frequency of visits of two bumblebee species showed no distinct fluctuations in the studied population among the 4 years. However, seed production of netted flowers after emasculation indicated wind pollination had occurred. The seed number of bagged flowers with one visit by bumblebees was significantly less than that of netted flowers after one visit, or in control flowers. Both seed number and fruit set of netted flowers were significantly lower than in control flowers. These results suggest that wind pollination provides supplementary pollen to unvisited and/or once-visited flowers, but accounts for only a small amount of seed production compared to bumblebee pollination in natural conditions. Such a combination of insect and wind pollination might play an important role in maintaining sexual reproduction of this biennial herb, allowing it to persist in arid habitats on the Qinghai-Tibetan Plateau, especially during Quaternary glacial periods when pollinator populations oscillated extensively.; Wind pollination can provide reproductive insurance for animal-pollinated dioecious plants in the absence of available pollinators, but combinations of insect and wind pollination (ambophily) have rarely been studied in hermaphrodite herbs. We examined the stable occurrence of insect pollination and wind pollination over 4 years in a population of a biennial Aconitum species (A. gymnandrum) with actinomorphic and degenerate sepals. The total frequency of visits of two bumblebee species showed no distinct fluctuations in the studied population among the 4 years. However, seed production of netted flowers after emasculation indicated wind pollination had occurred. The seed number of bagged flowers with one visit by bumblebees was significantly less than that of netted flowers after one visit, or in control flowers. Both seed number and fruit set of netted flowers were significantly lower than in control flowers. These results suggest that wind pollination provides supplementary pollen to unvisited and/or once-visited flowers, but accounts for only a small amount of seed production compared to bumblebee pollination in natural conditions. Such a combination of insect and wind pollination might play an important role in maintaining sexual reproduction of this biennial herb, allowing it to persist in arid habitats on the Qinghai-Tibetan Plateau, especially during Quaternary glacial periods when pollinator populations oscillated extensively.
关键词	Aconitum Gymnandrum Ambophily Bumblebee Pollination Qinghai-tibetan Plateau
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	COLUMBIANUM RANUNCULACEAE ; REPRODUCTIVE SUCCESS ; BREEDING SYSTEMS ; ANGIOSPERMS ; EVOLUTION ; ECOLOGY ; POLLEN ; INTERFERENCE ; PLANTS ; CONSERVATION
收录类别	SCI
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000270429300002
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/1816
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China 2.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Inst Mol Ecol, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Duan, Y. W.,Zhang, T. F.,He, Y. P.,et al. Insect and wind pollination of an alpine biennial Aconitum gymnandrum (Ranunculaceae)[J]. PLANT BIOLOGY,2009,11(6):796-802.
APA	Duan, Y. W.,Zhang, T. F.,He, Y. P.,&Liu, J. Q..(2009).Insect and wind pollination of an alpine biennial Aconitum gymnandrum (Ranunculaceae).PLANT BIOLOGY,11(6),796-802.
MLA	Duan, Y. W.,et al."Insect and wind pollination of an alpine biennial Aconitum gymnandrum (Ranunculaceae)".PLANT BIOLOGY 11.6(2009):796-802.