Genetic analysis of morpho-physiological parameters in cotton (Gossypium hirsutum)

Crosses from 9-parents half dialled of G. hirsutum were evaluated in field and mud pots. 80th additive and non additive gene action were important in the expression of biomass recovery, water use efficiency, total leaf area, transpiration and yield per plant. The g.c.a. and s.c.a. variances under varied condition indicated the influence of growing conditions on various characters. Laxmi, Reba Pvt 9, Reba 850 and 130100 were good general combiner for yield, biomass/plant, relative water content and total leaf area. Crosses SRT 1 x 81007, SRT 1 x Reba Pvt 9, 8 1007 x 1301DD, Laxmi x Reba 850, Reba 8 50 x 170 CO₂ and 1301 DD x 170CO₂ were identified as the best cross combinations for high yield with less biomass production.