Salt stress is one of the most crucial abiotic factors and affects about 20 % world's irrigated land. The present study was conducted to evaluate combining effects salinity response at early seedling stage, (root length, coleoptile shoot germination rate vigour) using four parents their 4 x full-diallel crosses bread wheat. Parents F2 hybrids were assessed in laboratory under induced by sodium ...

Heterosis and the nature and combining ability was studied in 7 × 7 diallel cross in maize for grain yield and yield contributing characters. The significant estimates of GCA and SCA variances suggested the importance of both additive and non-additive gene actions for the expression studied traits. Preponnderance of additive gene action was noticed for ear diameter and 1000-kernel weight and th...

Present investigation was conducted to estimate the per se performance, combining ability and heterosis for grain quality traits in rice using line × tester mating design. Analysis of variance with respect to crosses revealed significant differences for all the traits studied. GCA and SCA results revealed the predominance of SCA variance in relation to GCA variance for all the traits. For aroma...

Today the concept of heterotic groups and patterns is fundamental to hybrid breeding theory and practice. Our objectives were to (i) review various hypotheses on the causes of heterosis in maize and on the experimental evidence supporting or refuting them, (ii) examine advantages and disadvantages of the concept of heterotic groups and patterns, (iii) describe the status of heterotic patterns i...

Selecting appropriate donors and acquiring information about the genetic basis of inheritance is essential for breeding programs. In this study, a diallel cross was produced by crossing 15 progenies with five commercial lines wide diversity different rice traits (grain yield, plant height, days to flowering, panicle blast, brown spots, leaf scald, grain discoloration) in an incomplete design. T...

Fifteen genetically diverse parental genotypes of sunnhemp belonging to different geographical origin were assessed to evaluate general and specific combining ability of parents and cross combinations, respectively, for selecting the superior parent combination. For this, fifteen parents and their 105 F1s were grown in a Randomized Block Design (RBD) with three replications and data were collec...

This study was carried out to estimate general combining ability (GCA) and specific (SCA) of pre-and post-weaning traits from a partial diallel cross in three rabbit breeds: Local (L), Flemish Giant (F), Rex (R). Body weight at 0 (BW0), 30 (BW30), 42 (BW42), 63 (BW63) days age, average daily gains d age (ADG0-30), (ADG30-42), (ADG42-63), (ADG30-63), litter size birth (LS0) weaning (LS42), morta...

to determine the general and specific combining ability of the parental lines, five restorers ‎and four male sterility lines were selected as lines and testers respectively. nine parental lines were ‎crossed in a line × tester crossing system in year 2005 and the eight f1 hybrids and their six ‎parents in randomized complete blocks design (rcbd‏ (‏in two replications for yield, yield ‎component...