Screening of pea germplasm for resistance to powdery mildew

Rana, J.C. and Banyal, D.K. and Sharma, K.D. and et al, . (2012) Screening of pea germplasm for resistance to powdery mildew. Euphytica. pp. 1-12.

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Powdery mildew caused by Erysiphe pisi DC results heavy losses in the yield and quality of pods and seeds of pea crop. Germplasm comprising 701 accessions of garden and field pea originating from 60 countries were screened for powdery mildew resistance under natural epiphytotic conditions and 64 accessions found resistant in field screening for 2 years at one location were further screened both in field at two locations and artificially in laboratory to four isolates. The information was also obtained on the amount of genetic diversity and agronomic superiority in resistant accessions. Fifty-seven accessions showed resistant reaction for 3 consecutive years in field screening but only 14 accessions originating from 10 countries showed resistant reaction in laboratory screening against the four most prevalent isolates of E. pisi collected from different places in the area of experiment. Germplasm lines showed both complete and incomplete levels of resistance and variable reactions to different isolates. There was sufficient genetic diversity and agronomic superiority in the resistant accessions e.g. EC598655, EC598878, EC598704, IC278261, and IC218988, which may serve as useful genetic material to plant breeders for breeding pea varieties for powdery mildew resistance and high yield.

Item Type: Article
Uncontrolled Keywords: Agronomic traits – Genetic diversity – Erysiphe pisi – Pea – Powdery mildew
Author Affiliation: National Bureau of Plant Genetic Resources Regional Station, Phagli, Shimla, Himachal Pradesh Agriculture University, Palampur,YS Parmar University of Horticulture and Forestry, Solan, University of Horticulture and Forestry Regional Research Station, Kandaghat, National Bureau of Plant Genetic Resources, Pusa Campus, New Delhi, India
Subjects: Crop Improvement
Divisions: General
Depositing User: Mr. SanatKumar Behera
Date Deposited: 29 Sep 2012 08:45
Last Modified: 29 Sep 2012 08:45
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