Seed Priming with KNO3 Solutions on Seed Quality of Asiatic Pennywort
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Abstract
Seed dormancy of Asiatic pennywort is caused by germination inhibitors in the embryo or food storage inside the seed at the physiological maturity stage, resulting in poor, slow and non-uniform germination. Therefore, this research aimed to study the effects of seed priming with KNO3 solutions on the seed quality of Asiatic pennywort to enhance seed germination. The experiment was designed in a completely randomized design comprising six treatments, including non-primed seeds (control), and seed primed by soaking in 0% (reverse osmosis water), 0.5, 1, 2 and 3% KNO3 solutions for 24 hours. Seeds were then dried to reduce the moisture content to the initial level (7%). The results showed that seed priming of Asiatic pennywort with all treatments had no effect on the percentages of radicle emergence and germination compared to non-primed seeds. However, it did reduce the days to emergence (DTE) and mean germination time (MGT) compared to the control. Therefore, seed priming of Asiatic pennywort with 1% KNO3 for 24 hours was the best method, resulting in higher germination rate, and faster DTE and MGT compared to non-primed seeds.
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References
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