The primary objective was to estimate breed, heterosis, and recombination effects on growth and carcass traits of two different four-breed composite populations of pigs. Experiment 1 (Exp. 1) included purebred and crossbred pigs originating from Yorkshire, Landrace, Large White, and Chester White breeds, and Experiment 2 (Exp. 2) included pigs from Duroc, Hampshire, Pietrain, and Spot breeds. D...

It is crucial to assess genetically superior parents when developing novel hybrids. This experiment was conducted find out the diversity of 27 Capsicum annuum mutant lines derived from two varieties.To achieve objective, 23 morpho-physiological and yield traits were recorded through planting seasons. Highly significant differences (p < 0.01) among studied traits. There a strong moderately po...

Abstract Background The utilization of heterosis has greatly improved the productivity cotton worldwide. However, a major constraint for large-scale promotion F 1 hybrid is artificial emasculation and pollination. This study proposed potential 2 hybrids to improve upland production through comparative evaluation generations. Results Eight varieties were analyzed crosses made according NCII inco...

The development of new rice varieties is highly dependent on genetic diversity in desirable agronomic traits. Therefore, this study aimed to identify potential genotypes having the characters Korean (Tongil-type) and japonica developed through doubled haploid (DH) technology apply our breeding materials. 35 elite DH lines derived from another culture African along with two local checks were pla...

autoselection is a kind of natural selection, that occurs in reproductive traits by inequality of offspring generation and therefore by virtue of the nature of its genes transmission to next generations. in this study, the effects of autoselection on heritability and selection response in reproductive traits by using univariate stochastic computer simulation in artificial selected and unselecte...

Embryo transfers were used to demonstrate that the genotype of the mother providing the uterine developmental environment significantly influences postnatal growth and adult body size of her progeny. Irrespective of their own genotype, mouse embryos transferred into the uterus of an inbred strain with large body size (C3H) had greater body weights, longer tails and higher growth rates than thos...

By using both numerical and analytical approaches, we have shown that heterosis alone is not a mechanism for maintaining many alleles segregating at a locus. Even when all heterozygous are more fit than all homozygotes, the proportion of fitness arrays that will lead to a stable, feasible equilibrium of more than 6 or 7 alleles is vanishingly small. More alleles can be maintained if, in additio...

Understanding the relative importance of heterosis and outbreeding depression over multiple generations is a key question in evolutionary biology and is essential for identifying appropriate genetic sources for population and ecosystem restoration. Here we use 2455 experimental crosses between 12 population pairs of the rare perennial plant Rutidosis leptorrhynchoides (Asteraceae) to investigat...