Aggressiveness of Phaeoisariopsis griseola isolates and reaction of common bean varieties to the isolates under greenhouse conditions
نویسندگان
چکیده
منابع مشابه
Detection and Differentiation of Phaeoisariopsis griseola Isolates with the Polymerase Chain Reaction and Group-Specific Primers
Angular leaf spot (ALS) disease of common bean (Phaseolus vulgaris L.) is caused by the imperfect fungus Phaeoisariopsis griseola (Sacc.) Ferraris. ALS is an important disease in tropical and subtropical countries and can cause severe bean yield losses (approximately 40 to 80%) under favorable environmental conditions (5,7,19,20). Breeding for disease resistance is the most practical approach f...
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This work quantifies two important epidemiological features of the bean (Phaseolus vulgaris)/Phaeoisariopsis griseola pathosystem. The first is the effect of the number of nights of leaf wetness on infection efficiency. Infection efficiency was below 10% when inoculated leaflets were exposed to less than two nights of leaf wetness. Optimum infection efficiencies were obtained after three to fou...
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The fungus Pseudocercospora griseola, the causal agent of angular leaf spot in the common bean (Phaseolus vulgaris L.), exhibits a broad pathogenic variability that complicates the development of resistant cultivars. For breeding programs to successfully obtain common bean cultivars with durable resistance, knowing the aggressiveness of different strains, as well as the mechanisms of genetic re...
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Aggressiveness of fifteen isolates of Phaeoisariopsis griseola and variations in angular leaf spot symptom development in common bean were studied. The isolates were selected based on their virulence and genetic differences and represented Andean, Afro-Andean and Mesoamerican groups of P. griseola. Aggressiveness was determined based on length of incubation period, rate of lesion expansion, les...
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ژورنال
عنوان ژورنال: African Journal of Agricultural Research
سال: 2019
ISSN: 1991-637X
DOI: 10.5897/ajar2019.14260