in this study six genotypes of upland cotton (g. hirsutum l.) were crossed in a half diallel (6×6) mating fashion. the parents and f1s were planted in a complete randomized block design with three replications at the hashemabad cotton research station (gorgan) in 2005. cotton yield and some agronomic traits were evaluated. analysis of variance showed that differences due to genotypes were signi...

A line × tester analysis was conducted in maize involving 12 lines and 3 testers for grain yield and its components to determine the heterosis as well as general combining ability (GCA) and specific combining ability (SCA) effects. Highly significant genotypic differences were observed indicated wide range of variability present among the genotypes. GCA and SCA variance for yield per plant numb...

general and specific combining ability of five fertile male (lines) and two male sterile ‎‎(tester) of rice were evaluated for 10 important morphological traits as well as yield and yield ‎components in a randomized complete block design with three replications. results revealed ‎that general combining ability effects were highly significant (p

a study of the combining ability and gene effects, that can obtained through diallel cross analysis provides considerable information to breeders for a design of breeding programs. inheritance and genetic control of yield and its components were studied in a full diallel cross for seven iranian cantaloupe cultivars namely: rish-baba, shah-abadi, samsouri, dastjerdi, magasi-neyshabour, till-toro...

Line × tester design was employed to evaluate nine parents of Corchorus olitorius for their combining ability and heterosis seedling traits under normal drought conditions. Analysis variance revealed significant differences among the crosses. Under conditions, root length, fresh dry weight roots, volume, shoot exhibited contributions line interaction hybrid. Among parents, JRO 3690 OIN 970 disp...

Combining ability in forage sorghum [Sorghum bicolor (L.) Moench] was not as much investigated as in grain sorghum. In the present study, 4 local stocks (Testers) and 7 exotic stocks in A3 cytoplasm were crossed in line x tester fashion to investigate combining ability in forage sorghum. The hybrids and their parents were evaluated across two years (2002 2003) and at two locations in Khartoum S...

Advanced button mushroom cultivars that are less sensitive to mechanical bruising are required by the mushroom industry, where automated harvesting still cannot be used for the fresh mushroom market. The genetic variation in bruising sensitivity (BS) of Agaricus bisporus was studied through an incomplete set of diallel crosses to get insight in the heritability of BS and the combining ability o...

Exotic germplasm, that is, germplasm without commercial applicability, can broaden the genetic base in upland cotton (Gossypium hirsutum L.). The objectives of this study were to determine combining ability and identify parents from exotic germplasm for breeding. Twelve regionally adapted exotic germplasm lines were crossed with one cultivar and three elite germplasm lines in a North Carolina D...

A study was performed using 6 × 6 F1 diallel population without reciprocals to assess the mode of inheritance of pod yield and related traits in groundnut with imposed salinity stress. Heterosis was found for pod number and yield. Data on general and specific combining ability (gca and sca) indicated additive and nonadditive gene actions. The gca: sca ratios were much less than unity suggesting...