Advanced   Register
XTBG OpenIR  > 文献共享  > 期刊论文

title: Reproductive isolation of two sympatric louseworts, Pedicularis rhinanthoides and Pedicularis longiflora (Orobanchaceae): how does the same pollinator type avoid interspecific pollen transfer?
author: Yang, Chun-Feng;  Gituru, Robert W.;  Guo, You-Hao
Issued Date: 2007
Abstract: To study the isolation mechanism of two commonly intermingled louseworts, Pedicularis rhinanthoides and Pedicularis longiflora, pollination biology in three mixed populations with the two species was investigated during a 3-year project. The results indicated that higher flowering density could help to enhance pollinator activity, and thus increase reproductive output. Bumblebees are the exclusive pollinator for the two louseworts and are essential for their reproductive success. Reproductive isolation between the two species is achieved by a combination of pre- and postzygotic isolation mechanisms. Although both species are pollinated by bumblebees, the present study indicates they successfully avoid interspecific pollen transfer due to floral isolation. Mechanical isolation is achieved by the stigma in the two species picking up pollen from different parts of the pollinator's body, whereas ethological isolation occurs due to flower constancy. Additionally, strong postzygotic isolation was demonstrated by non seed set after artificial cross-pollination even with successful pollen tube growth. We describe the hitherto unreported role of variation in the tightness and direction of the twist of the corolla beak in maintaining mechanical isolation between Pedicularis species. Although floral isolation in Pedicularis is incomplete, it is considered to be an important mechanism in maintaining species boundaries in the genus. (c) 2007 The Linnean Society of London, Biological Journal of the Linnean Society.
Related URLs: 10.1111/j.1095-8312.2007.00709.x
Appears in Collections:文献共享_期刊论文

Files in This Item:

File SizeFormat
Reproductive isolation of two sympatric louseworts, Pedicularis rhinanthoides and Pedicularis longiflora (Orobanchaceae).pdf295KbAdobe PDFView  联系获取全文

全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Yang, Chun-Feng,Gituru, Robert W.,Guo, You-Hao. Reproductive Isolation Of Two Sympatric Louseworts, Pedicularis Rhinanthoides And Pedicularis Longiflora (orobanchaceae): How Does The Same Pollinator Type Avoid Interspecific Pollen Transfer?[J]. Biological Journal Of The Linnean Society,2007,90(1):37-48.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Yang, Chun-Feng]'s Articles
 [Gituru, Robert W.]'s Articles
 [Guo, You-Hao]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Yang, Chun-Feng]‘s Articles
 [Gituru, Robert W.]‘s Articles
 [Guo, You-Hao]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Powered by CSpace