Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s004420050097 |
Effects of pollination intensity on Lesquerella fendleri seed set: Variation among plants | |
Mitchell, RJ | |
通讯作者 | Mitchell, RJ |
来源期刊 | OECOLOGIA |
ISSN | 0029-8549 |
出版年 | 1997 |
卷号 | 109期号:3页码:382-388 |
英文摘要 | The amount of pollen arriving on a flower can be an important determinant of seed production. I investigated the effect of varying pollen loads on seed set of the perennial desert mustard Lesquerella fendleri. To do this, I quantified the dose response relationship between stigmatic pollen load and seed set per fruit using over 400 flowers from 13 greenhouse-grown plants. Seed set per fruit generally increased with pollen up to about 100 pollen grains, then reached a plateau. A negative exponential regression of seed set on pollen load for the pooled data explained less than 10% of the observed variation in seeds per fruit. However, accounting for variation among individual plants in the dose-response relationship increased explained variation to 40%, indicating that plants responded differently to the same amount of available pollen. Plants varied little in the initial slope of the dose-response curve, but differed substantially in the asymptote, which ranged from 3 to 16 seeds. This limit is not imposed by ovule number, and may instead result from variation among plants in vigor, propensity to abort seeds, or in gender specialization. Such variation among plants in dose-response relationships has important consequences for understanding pollination limitation and pollen competition. |
英文关键词 | pollination intensity pollen dose-response pollen number non-linear regression seed set |
类型 | Article |
语种 | 英语 |
收录类别 | SCI-E |
WOS记录号 | WOS:A1997WJ88400008 |
WOS关键词 | REPRODUCTIVE SUCCESS ; HERMAPHRODITIC PLANT ; DELPHINIUM-NELSONII ; IPOMOPSIS-AGGREGATA ; POLLEN ; COMPETITION ; ABORTION ; FLOWER ; FRUIT ; SELECTION |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/134867 |
推荐引用方式 GB/T 7714 | Mitchell, RJ. Effects of pollination intensity on Lesquerella fendleri seed set: Variation among plants[J],1997,109(3):382-388. |
APA | Mitchell, RJ.(1997).Effects of pollination intensity on Lesquerella fendleri seed set: Variation among plants.OECOLOGIA,109(3),382-388. |
MLA | Mitchell, RJ."Effects of pollination intensity on Lesquerella fendleri seed set: Variation among plants".OECOLOGIA 109.3(1997):382-388. |
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