GENE ACTION FOR SEED YIELD AND ITS COMPONENTS IN LINSEED

Abstract

The material consisted of six crosses of linseed viz. Neela x Hira, Neela x J-23, RLC (U)-2 x Laxmi- 27, RLC (U)-2 x T-397, KL-178 x T-397 and KL-178 x Hira involving seven parents. The experiment with six basic populations (Pt , Pz, Ft , Fz, BCt and BCz) of each cross was conducted in randomized block design with three replications at Crop Research farm, Mauranipur during rabi 1998-99. The parents and Ft were sown in one row each, whereas backcrosses and Fz were represented by two and six rows, respectively. Each row was of 3m length, spaced at 30 em apart. Observations for five metric traits from each replication were recorded on five randomly selected plants from parents and Ft , 15 plants from backcrosses and 30 plants from Fz generation. The scaling test [1] was used to detect the epistasis. Generation mean analysis [2] was followed to estimate the nature and magnitude of gene effects. In the absence of epistasis, three-parameter model [3] was used to estimate the mean (m), additive (d) and dominance (h) components.