Evaluation of powdery mildew resistant pyramid vegetable pea genotypes introgressed with er1 and er2 genes for yield and related traits in mid hills of Himachal Pradesh

Abstract

Powdery mildew is among the most destructive disease of vegetable pea causing high yield losses and significant reduction in quality. To overcome this disease, vegetable pea lines developed through gene pyramiding were evaluated in randomized block design over two years to identify high-yielding powdery mildew-resistant line(s). The experiment was carried out during the rabi season of 2017-18 and 2018-19 at the experimental research farm of CSK HPKV, Palampur, using ten genotypes, including three checks. The analysis of data based on mean values of the studied traits revealed significant differences among all the genotypes. On the basis of the mean performance of two years, Line 1-2, P-227, P120-4 and P116-3 showed the best performance with respect to the number of primary branches per pod, number of pods per plant, number of seeds per pod, pod length, internodal distance and pod yield per plant and also exhibited resistance reaction against powdery mildew as these genotypes were introgressed with two recessive powdery mildew resistant genes i.e., er1 and er2.