Absence of
resistance/tolerance against diseases and insect pests in mungbean [Vigna
radiata (L.) Wilczek] varieties, is one of the main reasons for their low
yield in Pakistan. During the summer (Kharif) season, yellow mosaic epidemic
damages the crop in most of the mungbean growing areas of Pakistan. For the
purpose of identifying resistance/tolerance in mungbean germplasm, a disease
screening nursery, comprising of 108 test entries, was developed. Screening was
done under natural environmental conditions in 2007 at University of the
Punjab, Lahore, Pakistan against yellow mosaic disease (YMD). All the test
entries showed a highly susceptible response. Despite being highly susceptible,
some test entries produced good yield and showed tolerance to YMD. Tolerance
against YMD is a considerable factor to be included in breeding program to
develop high yielding varieties of V. radiata.