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What is the polar axis?

 

作者: Knut Fægri,  

 

期刊: Grana  （Taylor Available online 1978）
卷期: Volume 17, issue 1  

页码: 15-16

 

ISSN:0017-3134

 

年代: 1978

 

DOI:10.1080/00173137809428848

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

In single pollen grains, the polar axis should be defined in relation to the actual geometry of the surface of the monads. The ontogenetic definition, referring to the position in the tetrad, is inapplicable in practice, and can lead to confusion.

 

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