Rajasthan Agricultural University, Agricultural Research Station, Durgapura, Jaipur - 302018
*Corresponding author's present address: Department of Basic Sciences, Sardar Vallabh Bhai Patel University of Agriculture and Technology, Meerut - 250 110
Two genotypes of mothbean IPCMO-912 and FMM-96 were germinated in petriplates. The treatment included 0.5% NaCl with and without 100 ppm GA3/IAA in Hoagland solution. Hoagland solution alone acted as control. Morphological parameters and water relation parameters were recorded on 7 and 12 days old seedlings. Salinity decreased the root length, shoot length, seedling fresh weight and dry weight but increased the root-shoot ratio. Hormonal treatment alleviated the adverse effect of salinity on seedling growth (length and weight) to some extent in both the genotypes. Salinity also decreased leaf water potential, osmotic potential and turgor potential and the decrease was greater in FMM-96 than in IPCMO-912. Application of the hormones reversed the salinity induced fall in water potential, osmotic potential and turgor potential in the two genotypes. However, genotype FMM-96 responded more to these hormones compared to IPCMO-912.
Gibberellic acid, indole acetic acid, moth bean, salinity stress
