2012•Legume Research - An International JournalRequires access
Induced Polygenic Variability and Selection Strategy for Seed Yield in Grasspea (Lathyrus sativus L.)
Swapan Kumar Tripathy, D. Lenka, Rajesh Ranjan, K. Pradhan
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Abstract
Genetic variation induced in grasspea cv. Dhenkanal local following mutagenesis varied with mutagens, generations and characters studied. Number of seeds, pods and seed yield/plant were found to be docile for induced genetic variation. Treatments e.g., 40kR - γ - ray + 0.01% NG and 40kR γ -ray + 0.2% EMS + 0.01% NG induced appreciable genetic variation for seed yield with widest range, comparable mean value, high GCV, h 2 (bs) and GA compared to control in M 2 and M 3 . Whereas, 0.02-0.03% NG with similar consideration had higher genetic variability in M 3 than M 2 indicating release of additional variability and further scope for selection of high yielding mutants. In contrast, 0.01% NG might be amenable for direct selection as it had the highest mean seed yield per plant along with low GCV, h 2 (bs) and GA.