首页   按字顺浏览 期刊浏览 卷期浏览 Pollen morphology of the Orobanchaceae and rhinanthoid Scrophulariaceae
Pollen morphology of the Orobanchaceae and rhinanthoid Scrophulariaceae

 

作者: J.Paul Minkin,   W.Hardy Eshbaugh,  

 

期刊: Grana  (Taylor Available online 1989)
卷期: Volume 28, issue 1  

页码: 1-18

 

ISSN:0017-3134

 

年代: 1989

 

DOI:10.1080/00173138909431007

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

The Scrophulariaceae is a large family of primarily herbaceous plants, containing some members which are root parasites, while others are non-parasitic. The parasites are all within the subfamily Rhinanthoideae, while most of the nonparasites have been included in the Antirrhinoideae. The Orobanchaceae is a small family, all of whose members are root parasites. The two families are generally considered closely related, so much so, that several genera (Buchnera, Harveya, Hyobanche, andLathraea) have been moved back and forth between the families. In this study, light microscopy, scanning electron microscopy, and transmission electron microscopy were used to examine the pollen of 57 taxa: members of the Orobanchaceae and Rhinanthoideae, and several members of the Antirrhinoideae for out group comparisons. The resulting data showed no clear differences between the pollen of the Orobanchaceae and that of the rhinanthoid Scrophulariaceae. The grains were typically isopolar, radially symmetrical, more or less spheroidal, and tricolpate. The most common exine surface sculpturing was retipilate. The antirrhinoid pollen had two major differences: The apertures were tricolporate and the predominant exine surface was reticulate. The pollen of the Rhinanthoideae is closer in form to that of the Orobanchaceae, than it is to the pollen of the Antirrhinoideae.Digitalis, a non-parasitic member of the Rhinanthoideae, had pollen very similar to that of the members of the Antirrhinoideae.

 

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