Using Kosman's index of relative diversity to cluster phenotypes in polymorphic populations of plant pathogens: the case of Phytophthora infestans
Polymorphism in populations of plant pathogens enhances the risks associated with diseases. Molecular techniques allow the examination of this polymorphism using neutral markers such as total proteins and isozymes. Polymorphism may be measured and described using several diversity and information richness indices, and the different phenotypes may be ordinated with standard cluster analysis. This work used data from a study on total proteins within 55 isolates of Phytaphthara infestans, the pathogen of potato late blight, and compared the clustering of isolates resulting from standard cluster analysis, from differences among iso lates in number of proteins and from Ka, Kosrnans index of relative diversity, which is based on the maximum differences among isolates. Results indicate that both distances and Ka are suitable complements to cluster analysis.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
1998
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| Online Access: | https://revistas.unal.edu.co/index.php/agrocol/article/view/21522 |
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