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CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES
Wang, Yun1,2; Meng, Li-Lua3; Yang, Yong-Ping1,2; Duan, Yuan-Wen1,2
2010-10-01
发表期刊AMERICAN JOURNAL OF BOTANY
ISSN0002-9122
卷号97期号:10页码:1618-1624
摘要Premise of the study : Some floral traits could be selected by pollinators and nonpollinator agents, and studying the floral traits shaped by physical agents could reveal adaptive mechanisms to the environment. We explored the adaptive significance of the change in floral orientation, from pendulous flowers to erect fruits that have a persistent calyx, in Anisodus luridus, a perennial native to the Qinghai-Tibet Plateau (QTP). Methods : We examined the effect of flower orientation on pollinator visitation rates, pollen deposition efficiency, pollen quantity, and pollen viability to estimate whether pendulous flowers have improved male fitness. We then measured seed production and seed germination rate to assess whether erect fruits have enhanced female fitness. Key results : Pendulous flowers did not have any preferred pollinators or increased pollen deposition. In artificially erected flowers, the number of pollen grains greatly decreased after rainwash. Pollen germination experiments indicated that pollen damage by water and exposure to solar radiation is serious. In the persistent calyx that holds water within it, the temperature inside the calyx changed slower than in the calyx that had the water removed. After supplemental pollination, the seed number, seed set, and seed mass of fruits that had water removed from the calyx were reduced greatly in both years. Conclusions : We conclude that the change in floral orientation could enhance male and female fitness of A. luridus and is effectively adaptive to the alpine environments, indicating a strong selection by the combined pressure from various abiotic nonpollinator agents in shaping the floral traits of this alpine plant.; Premise of the study : Some floral traits could be selected by pollinators and nonpollinator agents, and studying the floral traits shaped by physical agents could reveal adaptive mechanisms to the environment. We explored the adaptive significance of the change in floral orientation, from pendulous flowers to erect fruits that have a persistent calyx, in Anisodus luridus, a perennial native to the Qinghai-Tibet Plateau (QTP).
关键词Anisodus Luridus Male/female Fitness Persistent Calyx Pollen Viability Qinghai-tibet Plateau Rain Solanaceae Solar Radiation
资助信息NSFC [40930209, 31070337]; CAS [KSCX2-YW-Z-1019]; NSF of Yunnan province [2008ZC042M]
学科领域Plant Sciences
DOI10.3732/ajb.1000010
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:000282513800012
引用统计
被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/2613
专题中国科学院青藏高原研究所昆明部
作者单位1.CAS, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
2.CAS, Inst Tibetan Plateau Res Kunming, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
3.Yunnan Normal Univ, Life Coll, Kunming 650092, Yunnan, Peoples R China
推荐引用方式
GB/T 7714
Wang, Yun,Meng, Li-Lua,Yang, Yong-Ping,et al. CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES[J]. AMERICAN JOURNAL OF BOTANY,2010,97(10):1618-1624.
APA Wang, Yun,Meng, Li-Lua,Yang, Yong-Ping,&Duan, Yuan-Wen.(2010).CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES.AMERICAN JOURNAL OF BOTANY,97(10),1618-1624.
MLA Wang, Yun,et al."CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES".AMERICAN JOURNAL OF BOTANY 97.10(2010):1618-1624.
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