Components of quantitative resistance to Cercospora canescens ellis and martin in mungbean (Vigna radiata (L.) Wilczek var radiata) and blackgram (Vigna mungo (L.) Hepper)
1993
Lapis, C.B. | Natural, M.P. | Raymundo, A.D. | Haute, R.A. (Philippines Univ. Los Banos, College, Laguna (Philippines). Inst. of Plant Breeding)
The components of quantitative resistance to Cercospora canescens in Vigna radiata and Vigna mungo were determined. Results showed that V. mungo had lower final disease severity (6-12 percent) compared to V. radiata cultivars (100 percent). Resistance significantly prolonged the incubation period by 1-4 days, delayed latent period by 1-4 days, reduced lesion size by 2.79-58.59 percent and lesion density by 29-98-46.76 percent, reduced sporulation capacity by 24.31-54.97 percent, shortened infectious period by 11-14 days or and delayed defoliation by 18-21 days. The components were significantly correlated but the degree of association varied
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