Screening of Urdbean Germplasm for High Seed Yield Coupled with Resistance to Mungbean yellow mosaic virus (MYMV)

Yellow mosaic disease (YMD) caused by Mungbean yellow mosaic virus (MYMV) is one of the most destructive biotic production constraints in urdbean. Development and introduction of resistant cultivars with high seed yield are considered as the most economical and eco-friendly option to manage YMD, for which availability of stable sources of resistance with high seed yield is a pre-requisite. A set of one hundred twenty eight genotypes of urdbean including a susceptible check were evaluated against MYMV in the field for two consecutive years during summer and kharif 2015-2016 under natural condition of disease incidence. There was considerable variation among the genotypes with respect to disease reaction. Out of 128 genotypes tested, only five genotype namely KU 96-3, NDU 12-1, NIRB 002, NIRB 003 & NIRB 004 were found to be disease free, nineteen genotypes (IPU 10-23, IPU 11-01, KPU 34, KUG 540, KUG 586, Mash-338, NDU 12-2, NDU 12-300, NDUZ 14-21,OBG 35, PU 09-35, Shekhar 3, UH 07-06, Uttara, VBG 10-008, VBG 11-053,VBN (BG) 3, VBN 6 & Vijay) found to be highly resistant and twenty two genotypes (IGKU 02-1, Kopergaon, KPU 12, KPU 13, KPU 14, KPU 16, KPU 33, KPU 7, KPU 8, KU 363, NDU 11-01,Palampur 93, Pant U 19, PU 08-05, PU 20, PU 22, RUG-44, Sekhar 2 , TU 67, UG 218, VBG 09-005 & WBU 108) showed highly resistance or resistance consistently in both the seasons. However, eight genotypes i.e. Uttara, PU-31, KU-363, KUG 540, UH 07-06, KUG 503, WBU 108 & Shekhar 33 were found to be superior for seed yield as well as resistant to MYMV. Among these lines, UH 07-06 and KUG 503 give highest seed yield in Kharif and summer.