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Field reactions of lucerne genotypes to anthracnose and crown rot caused byColletotrichum trifolii

 

作者: KochSusanH.,   KnoxP.S.,  

 

期刊: South African Journal of Plant and Soil  (Taylor Available online 1989)
卷期: Volume 6, issue 1  

页码: 32-35

 

ISSN:0257-1862

 

年代: 1989

 

DOI:10.1080/02571862.1989.10634475

 

出版商: Taylor&Francis Group

 

关键词: Colletotrichum trifolii;crown rot;disease resistance;lucerne;Medicago sativa

 

数据来源: Taylor

 

摘要:

Nineteen different cultivars and experimental lines of lucerne (Medicago sativaL.) were inoculated with sand-bran cultures ofColletotrichum trifoliiBain&Essary and evaluated for resistance to anthracnose and crown rot under local conditions. The various genotypes differed significantly in their reaction to these two diseases. Nine were resistant to crown rot, whereas five were resistant to both crown rot and anthracnose. The South African cultivar S A Standard was more resistant to crown rot and anthracnose than most other cultivars imported from Australia and North America. This cultivar, however, has a low yield potential in comparison with other cultivars. Frequent harvesting caused an increase of crown rot among all cultivars.

 

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