Better than nothing: Evolution of autonomous selfing under strong inbreeding depression in an alpine annual from the Qinghai-Tibet Plateau

	Better than nothing: Evolution of autonomous selfing under strong inbreeding depression in an alpine annual from the Qinghai-Tibet Plateau
	Zhang, Chan ; Zhou, Guo-Ying ; Yang, Yong-Ping ; Duan, Yuan-Wen
刊名	JOURNAL OF SYSTEMATICS AND EVOLUTION ; Zhang, C; Zhou, GY; Yang, YP; Duan, YW.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
	2014-05-01
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.; 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.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/4235]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Zhang, Chan,Zhou, Guo-Ying,Yang, Yong-Ping,et al. Better than nothing: Evolution of autonomous selfing under strong inbreeding depression in an alpine annual from the Qinghai-Tibet Plateau[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION, Zhang, C; Zhou, GY; Yang, YP; Duan, YW.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):363,2014.
APA	Zhang, Chan,Zhou, Guo-Ying,Yang, Yong-Ping,&Duan, Yuan-Wen.(2014).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.
MLA	Zhang, Chan,et al."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).