Radiosensitivity of Electron Beam on Quantitative Traits of Black Gram (Vigno mungo L. Hepper) In M1 Generation Veni K.1,*, Vanniarajan C.1, Souframanien J.2 1Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Madurai, (TNAU), Tamil Nadu, India 2Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay, Mumbai *Email: veni_296@rediffmail.com
Online published on 23 December, 2016. Abstract This study wascarriedout with black gramvariety of MDU 1 and VBN (Bg) 4 to determine the effects of electron beam (200, 300, 400, 500 and 600 Gy). Data collected were on seed germination, plant height, and number of clusters per plant, number of pods per plant, number of seeds per pod, hundred seed weight and single plant yield in M1 generation. Progressive reductionin germination and yield related traitswere observed in the mutagenic treatments. Deleterious effects were more pronounced in higher doses, indicating almost a linear relationship. LD50 value for electron beam in the varieties MDU 1 and VBN (Bg) 4 was 304.91 Gy and 302.21 Gy. The increasing doses of electron beam decreased the phenotypic and yieldrelated parameters. The reduction in yieldtraits has been attributed to the physiological disturbance or chromosomal damage of the cells in the plant caused by the mutagen. Top Keywords Electron beam, blackgram, germination, base length, single plant yield. Top |