Sexual allocation in the gynodioecious species Cyananthus macrocalyx (Campanulaceae) at high elevations in the Sino-Himalaya Mountains
文献类型：期刊论文
| 作者 | Chen, Jian-Guo; Niu, Yang ; Yang, Yang; Sun, Hang
|
| 刊名 | ALPINE BOTANY
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 126期号:1页码:49-57 |
| 关键词 | Cyananthus macrocalyx Female function Gynodioecy Pollen production Sexual allocation |
| 英文摘要 | Sexual allocation pattern is considered highly relevant for the maintenance of females in the process of evolution from hermaphrodites to dioecy. Theoretical and empirical studies predict that gynodioecious plants should invest more resources in male function under harsher environments and/or when female frequency is higher; and that there are trade-offs between male and female function. We studied sexual allocation pattern in the gynodioecious species Cyananthus macrocalyx in two populations in SW China. The results showed that although the total flower mass in hermaphrodites was significantly higher than that in females, females and hermaphrodites allocated similar biomass to female function (pistil biomass). As a consequence, females allocated relatively more resource to female function, while hermaphrodites allocated relatively more resource to pollinator attractiveness. There was no difference in total flower mass, pistil mass, and pollen production in hermaphrodites between the two populations. These results suggest that the females compensate for the disadvantage of lacking male function by allocating relatively more resource to female function, while hermaphrodites gain fitness through both male and female functions. This study supports the idea that if females are to be maintained in a gynodioecious population, they must allocate more resource to female functions than is necessary for hermaphrodites. However, our results were in contrast to those of previous studies, in that trade-offs between male and female functions and male-biased allocation under high female frequency were not observed. This study adds to the body of research on plant sexual allocation, and for that it is, at least at some aspects, contrary to previous statements, it could be helpful for advancing the theoretical predictions in the future. |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | SSP SPICATA MALVACEAE ; FLOWERING PLANTS ; REPRODUCTIVE ALLOCATION ; HERMAPHRODITIC PLANTS ; BREEDING SYSTEMS ; DIMORPHIC SHRUB ; 2 ALTITUDES ; EVOLUTION ; POLLINATION ; GENDER |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000372300400005 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/26023]  |
| 专题 | 昆明植物研究所_中国科学院东亚植物多样性与生物地理学重点实验室 |
| 作者单位 | Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jian-Guo,Niu, Yang,Yang, Yang,et al. Sexual allocation in the gynodioecious species Cyananthus macrocalyx (Campanulaceae) at high elevations in the Sino-Himalaya Mountains[J]. ALPINE BOTANY,2016,126(1):49-57. |
| APA | Chen, Jian-Guo,Niu, Yang,Yang, Yang,&Sun, Hang.(2016).Sexual allocation in the gynodioecious species Cyananthus macrocalyx (Campanulaceae) at high elevations in the Sino-Himalaya Mountains.ALPINE BOTANY,126(1),49-57. |
| MLA | Chen, Jian-Guo,et al."Sexual allocation in the gynodioecious species Cyananthus macrocalyx (Campanulaceae) at high elevations in the Sino-Himalaya Mountains".ALPINE BOTANY 126.1(2016):49-57. |
入库方式： OAI收割
来源：昆明植物研究所
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