determining general and specific combining ability of lines is necessary to use them as parents of hybrid varieties. in addition, estimates of the heritability of characters helps in selecting suitable breeding methods and predicting genetic gains of the traits. to determine general and specific combining abilities and gene effects of agronomic characters, five cms lines and four restorer lines...

For neutral additive genes, the quantitative index of population divergence (Q(ST)) is equivalent to Wright's fixation index (F(ST)). Thus, divergent or convergent selection is usually invoked, respectively, as a cause of the observed increase (Q(ST) > F(ST)) or decrease (Q(ST) < F(ST)) of Q(ST) from its neutral expectation (Q(ST) = F(ST)). However, neutral nonadditive gene action can mimic the...

An investigation was carried out with 48 genotypes of pea obtained through line x tester mating and were tested using a randomized block experimental design three replications. The result showed highly significant difference for all the 14 characters under study. variability, heritability genetic advance as percent mean studied characters. A high genotypic coefficient variation observed traits ...

Maize breeding programmes exploit inbred lines with superior combining ability for grain yield and other agronomic traits to create competitive hybrids. Therefore, the objectives of this study were determine heterotic groups locally developed maize lines, their relationships, exotic testers as well gene action controlling yield. Nineteen crossed four testers, based on a line x tester mating sch...

Kisspeptin (product of the kiss1 gene) is the most potent known activator of the hypothalamo-pituitary-gonadal axis. Both kiss1 and the kisspeptin receptor are highly expressed in the hypothalamus of vertebrates, and low doses of kisspeptin have a robust and long-lasting stimulatory effect on the rate of action potential firing of hypophysiotropic gonadotropin releasing hormone-1 (GnRH1) neuron...

The relative proportion of additive and non-additive variation for complex traits is important in evolutionary biology, medicine, and agriculture. We address a long-standing controversy and paradox about the contribution of non-additive genetic variation, namely that knowledge about biological pathways and gene networks imply that epistasis is important. Yet empirical data across a range of tra...

A study was conducted to determine gene actions controlling yield and other qualitative traits of tomato (Lycopersicon lycopersicum) as well combining ability among selected genotypes at the Teaching Research Farm Ladoke Akintola University Technology, Ogbomoso during 2017 2018 cropping seasons. Five ten offspring (F1), obtained from a 5×5 diallel crosses were sown in plots, arranged Randomized...

The present investigation was undertaken to evaluate ten germplasm of mung bean, used estimate genetic variability, heritability and advance for 16 characters. results showed significant differences among the bean genotypes in all All characters had a larger PCV, showing enfluence environmental variable on their expression. In study, PCV is higher than GCV under study. High coupled with high in...