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CHANGE IN FLORAL ORIENTATION IN ANISODUS LURIDUS (SOLANACEAE) PROTECTS POLLEN GRAINS AND FACILITATES DEVELOPMENT OF FERTILIZED OVULES

文献类型：期刊论文

作者Wang, Yun1,2; Meng, Li-Lua3; Yang, Yong-Ping1,2; Duan, Yuan-Wen1,2
刊名AMERICAN JOURNAL OF BOTANY
出版日期2010-10-01
卷号97期号:10页码:1618-1624
关键词Anisodus Luridus Male/female Fitness Persistent Calyx Pollen Viability Qinghai-tibet Plateau Rain Solanaceae Solar Radiation
ISSN号0002-9122
DOI10.3732/ajb.1000010
文献子类Article
英文摘要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).
学科主题Plant Sciences
WOS关键词ULTRAVIOLET-B RADIATION ; POLEMONIUM-VISCOSUM ; SEED PREDATORS ; FLOWER COLOR ; POLLINATORS ; SELECTION ; GERMINATION ; EVOLUTION ; TRAITS ; SYSTEM
WOS研究方向Plant Sciences
语种英语
WOS记录号WOS:000282513800012
资助机构NSFC [40930209, 31070337]; CAS [KSCX2-YW-Z-1019]; NSF of Yunnan province [2008ZC042M]
公开日期2011-12-06
源URL[http://ir.kib.ac.cn:8080/handle/151853/2613]  
专题昆明植物研究所_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.

入库方式： OAI收割

来源：昆明植物研究所

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