P Swathy* and GV Sudarsana Rao
An investigation entitled “Physiological effect of seed priming of growth regulators in cowpea (Vigna unguiculata L.)” was carried out in 2020. The experiment was conducted on seed germination and early seedling study at college of agriculture, Padannakkad, Kasaragod in complete randomized design with eight treatments and three replications. Treatments included seeds primed with growth regulators viz., TU at 500 ppm (T2), SA at 50 ppm (T3), SA at 100 ppm (T4), SA at 150 ppm (T5), BR at 0.1 ppm (T6), BR at 0.3 ppm (T7), BR at 0.5 ppm (T8) and a control (T1) without growth regulators. Seed priming with SA at 100 ppm and BR at 0.3 ppm showed 100 percent sprouting, seed germination, seedling survival and had taken minimum number of days for 50 per cent seed germination. Seed priming with 0.3 ppm BR significantly enhanced seedling vigour index which was on par with treatment of salicylic acid at 100 ppm.
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