Assessment of Gene Action for Agronomy Characters in Segregating Generation of Soybean [Glycine max (L.) Merr.]
Diana Sofia Hanafiah, Ratna R. Lahay, Irda Safni, Eva S. Bayu, Isman Nuriadi

Gamma ray irradiation is one of way to improve the plant genetic diversity. Seeds of Anjasmoro variety was treated with 100 Gy, 200 Gy and 300 Gy doses of Gamma-rays. The gene action for the agronomy characters in the mutated segregating generation was found out based on the frequency distribution of characters through measurement of skewness and kurtosis value. The frequency distribution for the agronomy characters viz., time of flowering, plant height, number of primary branches, seeds weight per plant and weight of 100 seeds were obtained. The skewness and kurtosis estimate were calculated to study the gene action. The number of primary branches recorded positive skewness value in all the three irradiated doses. The others characters have positive skewness value but different characters of each irradiated doses. This indicates the presence of complementary epistatic gene action for these traits and if selection will be made intensively in the segregating generations the gain will be faster of each characters in the three irradiated doses..

Full Text: PDF     DOI: 10.15640/jaes.v4n2a7