Seed enhancement germination, vigour and seedling growth of low-quality hemp seeds by hydro-priming
Keywords:
Hemp, hydro-priming, seed imbibition, germinationAbstract
Hydro-priming is a method of seed preparation that helps to promote the germination of hemp seeds. As each individual type of plant requires a specific priming duration differently, studying and identifying the appropriate priming duration is critical. This research aims to identify the most appropriate duration for the priming of hemp seeds in order to promote the germination, vigour and growth of RPF 4 hemp seedlings. In this experiment, hemp seeds were treated by using four different methods. These are seeds that were not hydro-primed (T1), and seeds primed for 3, 6, and 9 hours (T2), (T3) and (T4), respectively. The results showed that seeds that were hydro-primed showed improvement in every aspect of seed quality including better seedling height, and a less mean germination time than non-primed seeds. Particularly, seeds that were hydro-primed for 3 hours had the highest radicle emergence, speed of radicle emergence, germination percentage, speed of germination and shoot lengths among all treatment groups. In terms of moisture absorption, it took 7 hours for the hemp seeds to enter phase II of seed imbibition and 18 hour of seed imbibition to end after initial moisture absorption. It can be concluded that hydropriming seeds for 3 hours in a temperature of 25 °C is the most recommended duration and temperature for improving seedling quality of low-quality RPF 4 hemp seeds.
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