Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra

doi:10.1093/jpe/rtaa089

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	Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra
	Wang,Lin-Lin ; Yang,Na-Cai ; Chen,Min-Yu ; Yang,Yong-Ping ; Duan,Yuan-Wen
	2021
发表期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
卷号	14 期号:2 页码:229-240
摘要	Aims Sexual dimorphism is a common trait in plants with sex separation, which could influence female and male functions differently. In a subdioecious population of Dasiphora glabra on the Qinghai-Tibet Plateau, we investigated sexual dimorphism of floral traits and their effects on pollinator visitation, pollen flow and seed production. We also examined differences in genome size of hermaphroditic and dioecious plants.Methods We examined sexual dimorphism in flower number, flower size, and pollen and ovule production in a subdioecious population of D. glabra. We compared pollinator visitation, pollen dispersal and seed production between sexes. We also examined the genome size of three sex morphs using flow cytometry.Important Findings The number of hermaphroditic plants was significantly more than that of male and female plants, and dioecious plants accounted for ca. 40% in the study population. Hermaphroditic plants produced significantly more flowers than male and female plants. Flower size of male flowers was significantly larger than that of female and hermaphroditic flowers. Male flowers did not produce more pollen grains than hermaphroditic flowers, but female flowers produced more ovules than hermaphroditic flowers. Flies were the most frequent flower visitors and preferred large flowers, but their movements between flowers did not show any preference to large flowers. Simulated pollen flows suggested that effective pollen transfer was generally low for both hermaphroditic and male flowers, corresponding to the low seed set of naturally pollinated flowers. DNA contents of male and female plants were ca. four times than those of hermaphroditic plants. These results suggest male and female individuals have undergone polyploidy events and thus are not compatible with hermaphroditic individuals. Sexual dimorphism in floral traits in relation to pollination of dioecious plants might show an advantage in female and male functions, but this advantage is masked largely by low effectiveness of pollen transfer.
关键词	natural selection flower traits polyploidy sex separation sexual dimorphism GENDER DIMORPHISM POLLEN LIMITATION POLLINATOR VISITATION PLANT REPRODUCTION ALPINE PLANT EVOLUTIONARY STRATEGIES DISPLAY SYSTEM FRUIT
DOI	10.1093/jpe/rtaa089
WOS记录号	WOS:000637313200005
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73708
专题	中国科学院昆明植物研究所
作者单位	1.[Wang, Lin-Lin 2.Yang, Na-Cai 3.Chen, Min-Yu 4.Yang, Yong-Ping 5.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 6.Chinese Acad Sci, Inst Tibetan Plateau Res Kunming, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang,Lin-Lin,Yang,Na-Cai,Chen,Min-Yu,et al. Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra[J]. JOURNAL OF PLANT ECOLOGY,2021,14(2):229-240.
APA	Wang,Lin-Lin,Yang,Na-Cai,Chen,Min-Yu,Yang,Yong-Ping,&Duan,Yuan-Wen.(2021).Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra.JOURNAL OF PLANT ECOLOGY,14(2),229-240.
MLA	Wang,Lin-Lin,et al."Polyploidization and sexual dimorphism of floral traits in a subdioecious population of Dasiphora glabra".JOURNAL OF PLANT ECOLOGY 14.2(2021):229-240.

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