Effect Of Gamma Ray Irradiation And Harvesting Age On Viability And Vigor Of M2 Mutant Rice (Oryza Sativa L)Seeds (original) (raw)

This study aims to obtain genotypes and the accurate harvesting age of rice crops to increase seed viability and vigor. This research was conducted at the Experimental Garden and Seed Science and Technology Laboratory, Faculty of Agriculture, Syiah Kuala University started from June to December 2019. This study used a Factorial Completely Randomized Design (CRD). The observed variables were viability and vigor of rice seeds, namely: potential growth rate, germination capacity, vigor index, relative growth rate, seed emergence uniformity, dry weight of normal germination. The results showed that the genotypes that were irradiated by gamma ray radiation at a dose of 200 Gy were able to increase the potential growth rate, germination capacity, vigor index, relative growth rate and seed emergence uniformity. The harvesting age at a week after physiological maturity was able to increase the potential growth rate, germination capacity, vigor index, relative growth rate and seed emergence uniformity. There was an interaction between genotypes that already irradiated with gamma rays at a dose of 200 Gy and harvesting time of a week after physiological maturity on the potential growth rate, germination capacity, vigor index, relative growth rate and seed emergence uniformity.

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