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Variation in virulence and aggressiveness among pathotypes of Sclerospora graminicola on pearl millet

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Relation http://oar.icrisat.org/3536/
 
Title Variation in virulence and aggressiveness among pathotypes of Sclerospora graminicola on pearl millet
 
Creator Thakur, R P
Rao, V P
 
Subject Millets
 
Description Five pathotypes of S. graminicola, specific to Pennisetum glaucum genotypes, were evaluated for virulence (a qualitative measure of the relative capacity of an isolate to infect a host genotype), aggressiveness (a quantitative measure of the infection causing potential of an isolate, calculated as disease incidence), and virulence index (a quantitative measure of virulence, measured as disease incidence×latent period-1) on a set of P. glaucum genotypes in a greenhouse. The pathotypes were selected from a field population of the pathogen through a number of successive asexual generations on specific host genotypes. These were named as pathotype, Path 1 (host NHB 3), Path 2 (BJ 104), Path 3 (MBH 110), Path 4 (852B) and Path 5 (a field population from a mixture of NHB 3 and 7042S). The pathotypes differed significantly in virulence, aggressiveness and virulence index on the host genotypes. Highly significant (P
 
Publisher Indian Phytopathological Society
 
Date 1997
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3536/1/IndianPhytopathology_50_1_41-47_1997.pdf
Thakur, R P and Rao, V P (1997) Variation in virulence and aggressiveness among pathotypes of Sclerospora graminicola on pearl millet. Indian Phytopathology, 50 (1). pp. 41-47. ISSN 0367-973X