Mutagenic sensitivity analysis of gamma irradiations in Cowpea (Vigna unguiculata L. Walp)

Abstract

A study was undertaken in Cowpea (Vigna unguiculata L. Walp.) seeds to assess the mutagenic sensitivity of physical mutagen. Germination percentage gradually decreased in general with increase in dose/concentration of mutagen as similar condition was found in case of plant height. Here, 9and 14 different gamma doses were used to study the LD50 and GR30/GR50, respectively. LD50 value was 590.03 Gy based on germination percentage. GR30 and GR50 values based on regression formula on shoot length were 179.50 Gy and 318.68 Gy, respectively. The doses in between the range of 318 Gy 179 Gy doses were most appropriate to induce variation in cowpea.