P.R. Sasane, E.R. Vaidya, S.U. Borale, A.R. Rajane4 and Y.C. Raut
Abstract
The present study investigated the gamma ray sensitivity of two sesame (Sesamum indicum L.) varieties viz., AKT-64 and N-8 irradiated with five different doses from 400Gy to 700Gy. Germination percentage, root and shoot length, Survival percentage decreased gradually and observed a dose dependent relationship with an increase in dosage of gamma rays. N-8 showed a pronounced maximum reduction in germination percentage (28.44%) than AKT-64 (35.78%) at 700Gy, whereas survival percentage of AKT-64 (32.79%) and N-8 (26.45%) was drastically reduced at 700Gy dose. At a higher dose of 700Gy, root (2.42 cm) and shoot (2.06 cm) length of seedlings of N-8 were greatly inhibited. LD50 values that showed 50% reduction in biological parameters differed between AKT-64 and N-8. Based on all the biological parameters studied, the mutagen sensitivity of N-8 is higher than AKT-64. The overall considerations on M1 generation effects showed that N-8 were highly sensitive to gamma rays.