A study of heterosis and inbreeding depression in Pigeon pea. (Cajanus cajan (L.) Mill spp)

Abstract

The present investigation was conducted at Pulses and Castor Research Station, Navsari Agricultural University, Navsari during kharif 2017-20 with a view to study heterosis and other parameters of four crosses (each having P1, P2, F1, F2, BC1 and BC2 generations) in a Compact Family Block Design with three replications. Out of four crosses, cross II (GNP-401 X GNP-1B) and cross IV (GNP-401 x NPDK 15-12) recorded positive and highly significant relative heterosis and heterobeltiosis. Inbreeding depression was also recorded positive and significant in above mentioned crosses and values were 45.91% and 49.11% respectively. Relative heterosis value for cross II was 82.78% and for cross IV was 112.21%. Heterobeltiosis value for cross II was 80.43% while, for cross IV was 13.64%.