Abstract
Indian basil (Ocimum basilicum L.) is an essential oil and aromatic chemical-producing crop of India. Optimal germination potential and seed vigor are essential for commercial growers and farmers to justify buying premium-priced seed and ensure performance of their crop. Seed germination tests of Ocimum basilicum variety CIM-Saumya were carried out in Petri dishes at constant temperatures of 15°, 20°, 25°, 30°, 35°, and 40°C at 16 h light/8 h dark daily regimes. The temperature of 25°C was found to be optimal, and germination percentage and seedling vigor indexes I and II were 75.6, 496.7, and 0.358, respectively. Seeds produced abnormal seedlings at 40°C. Significant decreases in germination percentage and seedling vigor indexes I and II were observed at 15°C, 20°C, 30°C, and 35°C. Days 2–3 and days 6–7 after seed sowing were ideal times for first and final count, respectively, for seed germination of Indian basil.
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