KERAGAAN GENERASI KETIGA (M3) KEDELAI HASIL IRADIASI SINAR GAMMA PADA KONDISI OPTIMUM DAN KONDISI CEKAMAN KEKERINGAN

Abstract

The objective of this research was to obtain a genotype of selected putative mutant with
good agronomic traits and high yielding on the optimum condition and its adaptability to
drought stress in M3 generation. The study result showed that there were differences in the
growth and production of each population as a result of irradiation in optimum conditions and
drought stress conditions. The population as a result of irradiation at 150 Gy and 200 Gy had a higher
mean value for the plant height trait, the number of productive branches, the number of productive
nodes and the number of productive pods compared to irradiation population of 50 Gy, 100 Gy and
the control population of Argomulyo at optimum conditions. The decrease in the growth and
development happened to all the characters observed in the irradiation population in drought
conditions compared to when grown in optimum conditions. The decrease can be seen in the
characters of plant height, the number of pods and seed weight per plant. The growth and development
of the population irradiation of 150 Gy and 200 Gy were more influenced by drought conditions
compared to other irradiation populations. The selection in the optimum conditions produced 291
high yielding genotypes and the selection in drought conditions generated 202 genotypes and
adapted to drought environments.