Study on growth and yield of black rice M4 generation induced by 100 gamma-ray for drought resistance

One of the impacts of climate change is drought stress. Drought stress is a severe threat to the present and future, especially black rice cultivation. An appropriate breakthrough needs to be created to get new varieties with drought-resistant and high-yielding character. This paper aimed to review the growth, yield, and get a genotype of black rice M4 generation from Boyolali and Bantul induced by 100 gamma-ray, with a drought-tolerant. The research was conducted at the screenhouse of Jati Village, Jaten, Karanganyar, Indonesia, from August 2020 until January 2021. The screenhouse is 200 meters above sea level, and the daily temperature ranges from 28.2 °-31 ° Celsius. The research design used was a field experiment research by planting the genotype of black rice M4 generation from Boyolali and Bantul induced by 100 gamma-ray. All black rice genotypes were given a moisture content of 50% field capacity as a drought treatment. The observation variables included growth, morpho-physiology, and yield. The data were analyzed descriptively and the comparison character of black rice M4 generation induced by 100 gamma-ray with the control using the T-test. The results showed that there was an effect of drought stress treatment on growth, yield, and there was genetic diversity between genotypes. The selection results showed that the black rice genotype from Boyolali and Bantul were better induced by 100 gamm-ray than the control genotype.