Vol. 12, Issue 2 (2023)

Author(s):
Mahipal Yadav, Ashok Kumar Meena, Dr. SS Rajput, Dr. SS Punia and Ajay Pal Yadav

Abstract:
The present investigation was carried out in a set of 72 M₄ mutants of blackgram. The progenies employed in the present investigation were derived from parents PU 1 and CO 6 with three doses of physical mutagen (gamma rays) viz., 200 Gy, 400 Gy and 600 Gy. The experiment was conducted at the Agronomy farm, S.K.N. College of Agriculture, Jobner during kharif, 2021. Mutants were evaluated in augmented randomized block design with four blocks during kharif, 2021. The significant positive correlation with seed yield per plant was found in pods per plant, branches per plant, seeds per pod, pods per cluster, plant height, pod length, clusters per plant and days to 50% flowering. While it was positive and non-significant with days to maturity and protein content. Path analysis revealed that branches per plant, pods per plant, seeds per pod and plant height were effective for the selection of high yielding mutants as they exhibited high positive direct effect along with significant positive correlation with seed yield per plant. It was suggested that the selection of higher yielding blackgram genotypes may be helpful on the basis of performance and Germplasm may be used for mutation programme.