Field Pea (Pisum Sativum L.) is an important legume crop in Ethiopia. However, the average yield of its production is very low due to biotic and abiotic factors. Among biotic factors, Powdery mildew (Erysiphe polygoni) is one of the most prevalent disease hampering field pea production and productivity in small scale farmers. Thus, the study was conducted with the objectives to determine the yield potential and resistance to powdery mildew at kulumsa during 2018 main cropping season. The field experiment consisted of seventy-one field pea gene pools including three released varieties. The experiment was laid out in Augmented Block Design with four blocks. Among the 10 studied traits, four (Eigenvalue >1.0) contributed more than 68.45% variability among the materials. Cluster analysis grouped the 71 field pea genotypes into nine distinct classes especially on the disease and yield contributing traits. The grain yield of the field pea genotypes ranged from 753 to 3724 kg/ha. The highest grain yield was produced by GPHA-23 (3724Kg/ha) followed by GPHA-29 (3720Kg/ha). Results from present study revealed that considerable variation was found for resistance against the powdery mildew diseases. Out of the total 71 genotypes 12 were resistant, 29 were moderately resistant, 25 were moderately susceptible and 5 were susceptible to powdery mildew disease. Among 13 resistant genotypes; GPHA-9 and GPHA-19 were high yielder and GPHA-29, GPHA-48, GPHA-45 and GPHA-42 genotypes were found to be high yielding among 28 moderately resistant genotypes. The resistant genotypes identified could be transferred through hybridization to high yielding disease susceptible genotypes.
Key words: host plant resistance, Pisum sativum, disease severity, powdery mildew
Keywords: Host plant resistance, Pisum sativum, disease severity, powdery mildew