Ecology, Environment and Conservation Paper

Vol 26, June Suppl. Issue, 2020; Page No.(128-134)

EFFECTS OF CO 60 GAMMA RAY IONIZING RADIATION EXPOSURE ON THE VARIABILITY OF ADENIUM OBESUM GROWTH

Suryani D. Astuti, Wahlia F. Fina, Win Darmanto, Hery Purnobasuki, Nurul Fitriyah and Fadli Ama

Abstract

This study aims to determine the effect of Co-60 gamma ray irradiation on the growth of Adenium obesum plants and obtain an effective dose of Co-60 gamma ray irradiation for the growth of Adenium obesum plants. A sample of 200 Adenium obesum seeds was divided into 5 groups. T0 is the control group without irradiation, T1 is the 2 Gy gamma ray irradiation treatment group, T2 is the 6 Gy gamma ray irradiation treatment group, T3 is the 12 Gy gamma irradiation treatment group and T4 is the 20 Gy gamma irradiation treatment group. Each group consists of 50 samples. Giving gamma rays to the seeds, done by exposing all parts of the seeds of the Adenium obesum plant which are arranged parallel. The treatment was observed every 3 weeks for 12 weeks. Observation of plant growth of Adenium obesum includes biomass, plant height and number of leaves. The data obtained were analyzed using the Variant Analysis Test and the Tukey Test for height and biomass variables, while for the number of leaves the variables were analyzed by the Kruskal- Wallis test, and then a regression test was performed. The results showed that the radiation dose treatment significantly affected the growth of biomass and plant height of Adenium obesum at the 3rd, 9th and 12th weeks of observation but did not significantly affect the number of leaves that grew. The optimum dose of irradiation to stimulate the growth of biomass and plant height of Adenium obesum at observations of the 3rd, 9th and 12th is 6 gray. So Co-60 gamma ray irradiation affects the growth of biomass and plant height of Adenium obesum.

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