期刊文献+

侧穗凤仙花的传粉生态和繁育系统 被引量:11

Pollination ecology and breeding system of Impatiens lateristachys (Balsaminaceae) endemic to China
下载PDF
导出
摘要 通过对峨眉山特有种侧穗凤仙花的开花生物学特性、花器官结构、传粉者种类和访花行为、繁育系统、花粉胚珠比(P/O)及花粉活力的研究。发现居群之间花的寿命变化比较大,它们的雄蕊期长,雌/雄蕊期比为0.12~0.17;花粉胚珠比达到4.6万,花粉在开花第一天有很高的活力(〉90%);传粉者为熊蜂和天蛾,熊蜂包括贞洁熊蜂、白背熊蜂;存在盗蜜者灰熊蜂。侧穗凤仙花是自交亲和的异交植物,能通过雌雄异熟和独特的花部结构来避免自交及雌雄干扰。侧穗凤仙花存在柱头运动现象,并通过柱头运动增强了雌性功能。由于昆虫访花频率很低,侧穗凤仙花自然结果率(26%)很低,人工授粉明显增加了结果率(42%),说明侧穗凤仙花的低结果率可能和传粉者限制有关。 Pollination ecology and the breeding system of Impatiens lateristachys,a species endemic to the Emei Mountain were studied.The floral phenology,floral structure,pollen-ovule ratio(P/O),pollen viability,floral visitors and their behavior,and the breeding system were observed and determined.The flowering phase of the protandrous I.lateristachys lasted for a long time.The life span of an individual changed between the populations,but the female phase-male phase ratio was similar(0.12-0.17).The pollen/ovule ratio was 460 thousand,and pollen viability(MTT test)was at high level on the first day(90%).The primary pollinators were Bombus festivus Smith and B.parthenius Richards;secondary pollinators were hawk moth;and B.grahami Frison was nectar gatherer.I.lateristachys was a self-compatible species,its special floral structure and protandrous character could avoid selfing and intrafloral male-female interference very well.The stigma movement of I.lateristachys was responsible for enhancing the function of the female.Fruit set was relatively low(26%)under natural conditions,but hand-pollination increased the fruit set(42%).And the pollinator visitation rate(0.2-2.0)was significantly lower than that of other congeneric species(7.1-8.9),indicating that the fruit set may be limited by the shortage of pollinators.
出处 《广西植物》 CAS CSCD 北大核心 2011年第2期160-166,共7页 Guihaia
基金 国家重点基础研究发展计划(2007CB411600)~~
关键词 凤仙花科 传粉 繁育系统 雌雄异熟 柱头运动 雌雄干扰 Balsaminaceae pollination breeding system dichogamy stigma movement male-female interference
  • 相关文献

参考文献6

二级参考文献83

  • 1YANGShu-Xiang YANGChun-Feng ZHANGTao WANGQing-Feng.A Mechanism Facilitates Pollination due to Stigma Behavior in Campsis radicans (Bignoniaceae)[J].Acta Botanica Sinica,2004,46(9):1071-1074. 被引量:12
  • 2白伟宁,张大勇.雌雄同体植物的性别干扰及其进化意义[J].植物生态学报,2005,29(4):672-679. 被引量:19
  • 3Baker H G. 1955. Self-compatibility and establishment after "long distance" dispersal. Evolution 9: 347-349.
  • 4Bell G. 1985. On the function of flowers. Proceedings of the Royal Society of London. B. 224: 223-265.
  • 5Charlesworth B, Charlesworth D. 1978. A model for the evolution of dioecy and gynodioecy. The American Naturalist 112: 975-997.
  • 6Cruden R W. 1977. Pollen-ovule ratios: a conservative indicator of breeding systems in flowering plants. Evolution 31: 32-46.
  • 7Cruden R W, Hermann-Parker S M. 1977. Temporal dioecism: an alternative to dioecism? Evolution 31: 863-866.
  • 8Cui X-L, Wei R-C, Huang R-F. 1996. A study on the breeding system of Amomum tsaoko. In: Wu T-L, Wu Q-G, Chen Z-Y eds. Proceedings of the Second Symposium on the Family Zingiberaceae. Guangzhou: Zhongshan University Press. 288-296.
  • 9Dafni A. 1992. Pollination Ecology, a Practical Approach. New York: Oxford University Press.
  • 10Darwin C. 1877. The Different Forms of Flowers on Plants of the Same Species. London: John Murray.

共引文献101

同被引文献151

引证文献11

二级引证文献47

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部