Abstract
Four high yielding Vigna radiata (L.) Wilczek genotypes were tested for their salt tolerance at germination, 35, 55 days after emergence of seedlings, and at maturity (81DAE). The genotypes displayed a substantial variability for salinity tolerance at all growth stages. The salt tolerance limits (EC50 values) of genotypes varying from 2.7 dS m-1 to 4.1 dS m-1 . Enhanced salt tolerance was expressed by high germination percentage, reduced tip burning, low chlorosis and necrosis of young leaves, greater number and area of green leaves, high chlorophyll contents, low leaf senescence and high seed yield per plant. A genotype 245/7 exhibited tolerance at germination and 35 DAE while genotype NM-54 was the most tolerant at later growth stages.
