Effect of Osmopriming on Seed Germination and Seedling Vigour in Macrotyloma Uniflorum (Lam.) Verd C.
Seeds of Macrotyloma uniflorum, a drought tolerant taxon, were osmoprimed in various concentrations of Polyethylene glycol – 6000 (PEG -6000) ranges from 5% to 25% having water potential of -0.05MPa to -0.73MPa. Percent germination, mean germination time and seedling vigour of one month old were determined to analyze the effect of water stress caused by osmopriming at various concentrations of PEG. Percent germination and MGT of osmoprimed seeds at 5% of PEG were found to be in par with the control. Decline in the percent germination, MGT and seedling vigour was recorded as the concentration of PEG increased. Effect of induced drought by PEG treatments on percent germination, MGT, Germination index and SVI is discussed.