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题名: Better than nothing: Evolution of autonomous selfing under strong inbreeding depression in an alpine annual from the Qinghai-Tibet Plateau
作者: Zhang, Chan1, 2; Zhou, Guo-Ying3; Yang Yongping(杨永平)1, 4, 5; Duan, Yuan-Wen1, 4, 5
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: autonomous selfing ; Comastoma pulmonarium ; Gentianaceae ; inbreeding depression ; nectar robbery ; pollinator failure ; reproductive assurance
英文摘要: In plants with infrequent pollinator services, the benefits of reproductive assurance could be eroded by severe ovule discounting and inbreeding depression (ID). However, it remains unclear how selfing evolves under complete pollinator failure and strong ID. We examined the mating system and ID under netting and robbing conditions in Comastoma pulmonarium (Turcz.) Toyok. (Gentianaceae), an alpine annual experiencing a high ratio of nectar robbery on the Qinghai-Tibet Plateau. Comastoma pulmonarium produced seeds via selfing at the study site. No pollinator was observed and thus the nectar was consumed exclusively by robbers. Inbreeding depression occurred in the life stages of seed mass and germination, and the cumulative ID was much higher than 0.5 under netting and robbing conditions. Overall, in comparison with netting, the magnitude of ID under robbing conditions tended to decrease. Our results suggested that selfing could assure reproduction for plants under complete pollinator failure and strong ID, supporting the better than nothing role of selfing and providing one of the few cases of the evolution of selfing under strong ID.
出版日期: 2014-05-01
卷号: 52, 期号:3, 页码:363-367
DOI标识: 10.1111/jse.12082
语种: 英语
ISSN号: 1674-4918
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18165
Appears in Collections:中国科学院青藏高原研究所昆明部_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Biodivers & Biogeog East Asia, Kunming 650201, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining 810008, Peoples R China
4.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, Kunming 650201, Peoples R China
5.Chinese Acad Sci, Kunming Inst Bot, Inst Tibetan Plateau Res Kunming, Kunming 650201, Peoples R China

Recommended Citation:
Zhang,Chan;Zhou,Guo-Ying;Yang,Yong-Ping;Duan,Yuan-Wen.Better than nothing: Evolution of autonomous selfing under strong inbreeding depression in an alpine annual from the Qinghai-Tibet Plateau,JOURNAL OF SYSTEMATICS AND EVOLUTION,2014,52(3):363-367
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