Line x tester analysis for yield and quality traits in cucumber

Abstract

The experiment entitled Line x tester analysis for yield and quality traits in cucumber (Cucumis sativus L.) was undertaken with the objectives (i) To estimate genetic variability, heritability and genetic advance for different characters (ii)to find out nature and magnitude of gene action involve in the inheritance of various characters(iii)To estimate combining ability variances and their effect and (iv)To work out heterosis extent for different characters for planning of an appropriate strategy for development of high yielding cucumber hybrid as well as breeding procedure. The materials of experiment consisted 12 lines (K-100, K.-512, K-40, K-1, 5- URC-11-1, Panjab Naveen, Pusa Barkha, Poinsett-76, Pahari Barsati, Poinsett, Swarn Ageti, Pusa Uday with 3 testers (PCUC-8, Swarna Poona and Boro Patana)were crossed in line x tester fashion to obtained 36 F1 and evaluated in randomized block design with three replications having each experimental unit of single row with spacing of 2.5 m x 0.5 m at Vegetable Research Farm, Kalyanpur, C. S. Azad University of Agriculture and Technology, Kanpur during zaid and summer - 2018-19. Observations were recorded on all the six plants maintained for 19 traits viz. day to first male flower initiation day to first female flower initiation, number of node for first male flower, number of node for first female flower, number of branches per plant, vine of length at 60das, number of fruit per plant, day to first fruit set, number of fruit per vine at 60das, length of fruit (cm.), number of node/wine, duration of crop, average weight of fruit, diameter of fruit, fruit yield (kg.)/plant, day to first fruit picking, T.S.S, specific gravity of fruit, dry matter (%). newlineThe mean some squares due to parents vs. hybrids also found significant for all the traits studied during both the seasons (E1, E2) and over seasons (pooled). Except for number of node to first female flower, specific gravity of fruit during E1, and number of branches per plants during E2 and for days to first staminate