Pathogenic variability of Phaeoisariopsis personata (Berk. & Curt.) V. Arx. In groundnut (Arachis hypogaea L.)

Abstract

Resistant and susceptible groundnut genotypes obtained from the Institute of Plant Breeding (IPB), UPLB, Philippines and from ICRISAT, India, were tested against the most virulent and the least virulent isolates of Phaeoisariopsis personata. The resistant genotypes had delayed symptom appearance for an average of 2.09 days, reduced lesion number per leaflet by 42.41%, lesion size by 50%, spore per lesion by 88.60% and caused defoliation by 64.83% compared to the susceptible genotypes. Resistant and susceptible genotypes delayed symptom appearance for 1.25 days, reduced lesion number per leaflet by 28.84%, lesion size by 20.96%, spore production per lesion by 48.12% and caused defoliation by 27.41% when inoculated with the least virulent isolate compared to the most virulent isolate.

Source or Periodical Title

Bangladesh Journal of Botany

ISSN

2535416

Page

61-65

Document Type

Article

Subject

Groundnut, Pathogenic variability, Phaeoisariopsis personata

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