Abstract
High temperature is most important abiotic stress which causes morphological and physiological changes in plants. It is needed to screen those genotypes that can perform well under elevated temperatures. Developing plants with improved thermotolerance can mitigate the adverse effects of heat stress. There are certain hormones or hormone like substances like salicylic acid (SA) that can enhance stress tolerance in plants. During current investigations, seeds of four mung bean genotypes (NM 19-19, NM 20-21, NM 121- 123 and NCM 89) were imbibed in 0.1 and 1.0 mM SA prior to lethal temperature stress (50°C for 2h). Seedling length, fresh weight and dry weight were reduced remarkably under lethal stress but the pretreatment of SA before lethal stress caused significant improvement in these parameters at P
