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Cytomorphological Studies of the Biotypes OfPennisetum PedicellatumTrin.

 

作者:

 

期刊: Caryologia  (Taylor Available online 1979)
卷期: Volume 32, issue 1  

页码: 5-14

 

ISSN:0008-7114

 

年代: 1979

 

DOI:10.1080/00087114.1979.10796772

 

出版商: Taylor & Francis

 

数据来源: Taylor

 

摘要:

Pennisetum pedicellatumTrin. has four wild biotypes. The paper deals with the cytomorphological aspect of four such types. Based on morphological characters they have been designated as Types-A, B, C and D, respectively. These types not only differ from each other in minor morphological details but also in their chromosome number (2n=54, 48, 36 and 54, respectively) and behavior giving rise to different races. The taxonomic significance of these races has been discussed. Since the species is a well established apomict and irregular meiosis is not a barrier to seed formation, it has been inferred that the different races are successfully maintained in a polyploid complex.

 

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