Seasonal variation in the mating system of a selfing annual with large floral displays
文献类型：期刊论文
| 作者 | Yin, Ge; Barrett, Spencer C. H.; Luo, Yi-Bo ; Bai, Wei-Ning
|
| 刊名 | ANNALS OF BOTANY
 |
| 出版日期 | 2016 |
| 卷号 | 117期号:3页码:391-400 |
| 关键词 | corolla dragging delayed selfing Incarvillea mixed mating pollinator service reproductive assurance sand desert |
| ISSN号 | 0305-7364 |
| DOI | 10.1093/aob/mcv186 |
| 文献子类 | Article |
| 英文摘要 | Background and Aims Flowering plants display considerable variation in mating system, specifically the relative frequency of cross-and self-fertilization. The majority of estimates of outcrossing rate do not account for temporal variation, particularly during the flowering season. Here, we investigated seasonal variation in mating and fertility in Incarvillea sinensis (Bignoniaceae), an annual with showy, insect-pollinated, 'one-day' flowers capable of delayed selfing. We examined the influence of several biotic and abiotic environmental factors on day-to-day variation in fruit set, seed set and patterns of mating. Methods We recorded daily flower number and pollinator abundance in nine 3 x 3-m patches in a population at Mu Us Sand land, Inner Mongolia, China. From marked flowers we collected data on daily fruit and seed set and estimated outcrossing rate and biparental inbreeding using six microsatellite loci and 172 open-pollinated families throughout the flowering period. Key Results Flower density increased significantly over most of the 50-d flowering season, but was associated with a decline in levels of pollinator service by bees, particularly on windy days. Fruit and seed set declined over time, especially during the latter third of the flowering period. Multilocus estimates of outcrossing rate were obtained using two methods (the programs MLTR and BORICE) and both indicated high selfing rates of similar to 80 %. There was evidence for a significant increase in levels of selfing as the flowering season progressed and pollinator visitation declined. Biparental inbreeding also declined significantly as the flowering season progressed. Conclusions Temporal variation in outcrossing rates may be a common feature of the mating biology of annual, insect-pollinated plants of harsh environments but our study is the first to examine seasonal mating-system dynamics in this context. Despite having large flowers and showy floral displays, I. sinensis attracted relatively few pollinators. Delayed selfing by corolla dragging largely explains the occurrence of mixed mating in I. sinensis, and this mode of self-fertilization probably functions to promote reproductive assurance when pollinator service is limited by windy environmental conditions and competition from co-occurring flowering plants. |
| 学科主题 | Plant Sciences |
| 出版地 | OXFORD |
| 电子版国际标准刊号 | 1095-8290 |
| WOS关键词 | REPRODUCTIVE ASSURANCE ; POLLEN LIMITATION ; INBREEDING DEPRESSION ; CROSS-FERTILIZATION ; PLANT REPRODUCTION ; TEMPORAL VARIATION ; POLLINATION ; EVOLUTION ; MECHANISM ; POPULATIONS |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000371690500003 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Youth Foundation of Institute of Botany, CASChinese Academy of Sciences [1101166] ; Natural Sciences and Engineering Council of CanadaNatural Sciences and Engineering Research Council of Canada (NSERC) |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25062]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.[Barrett, Spencer C. H.] Univ Toronto, Dept Ecol & Evolutionary Biol, 25 Willcocks St, Toronto, ON M5S 3B2, Canada 2.Beijing Normal Univ, Coll Life Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Beijing 100875, Peoples R China 3.[Yin, Ge 4.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, Ge,Barrett, Spencer C. H.,Luo, Yi-Bo,et al. Seasonal variation in the mating system of a selfing annual with large floral displays[J]. ANNALS OF BOTANY,2016,117(3):391-400. |
| APA | Yin, Ge,Barrett, Spencer C. H.,Luo, Yi-Bo,&Bai, Wei-Ning.(2016).Seasonal variation in the mating system of a selfing annual with large floral displays.ANNALS OF BOTANY,117(3),391-400. |
| MLA | Yin, Ge,et al."Seasonal variation in the mating system of a selfing annual with large floral displays".ANNALS OF BOTANY 117.3(2016):391-400. |
入库方式： OAI收割
来源：植物研究所
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