Our understanding of the development of intrinsic reproductive isolation is still largely based on theoretical models and thorough empirical studies on a small number of species. Theory suggests that reproductive isolation develops through accumulation of epistatic genic incompatibilities, also known as Bateson-Dobzhansky-Muller (BDM) incompatibilities. We can detect these from marker transmiss...

Abstract A strong fire blight resistance QTL ( Mfu10 ) was previously detected on linkage group 10 (LG10) of Malus fusca accession MAL0045, using several strains the causative bacterium, Erwinia amylovora . As no strain capable breaking MAL0045 has been found, we hypothesized that another locus contributes to its resistance. However, none with tested progeny. Here, an avrRpt2 EA mutant (Ea1038)...

Twenty one F2 progenies derived from a 7×7 diallel crosses along with parents were evaluated for grain yield, flowering and maturity time. Due to significant genotypic effects for all traits, genetic analyses were performed on F2 progenies including analyses of combining ability and genetic components. The Analysis of variance revealed that both additive and non-additive genetic effects were in...

In crosses between evolutionarily diverged populations, genomic incompatibilities may result in sterile hybrids, indicating evolution of reproductive isolation. In several plant families, crosses within a population can also lead to male sterile progeny because of conflict between the maternally and biparentally inherited genomes. We examined hybrid fertility between subspecies of the perennial...

Endopeptidase allele Ep-D1c and DNA marker-assisted selection have been used for the incorporation of Lr19 + Lr24 leaf rust resistance genes combination into adapted commercial winter wheat cultivars. The first step was the transfer of the gene Lr19 from the donor cultivar Agrus into acceptor cultivars Simona and Lívia. The progenies possessing the null allele Ep-D1c linked to the gene Lr19 hav...

The breakdown of self-incompatibility, which could result from the accumulation of non-functional S-haplotypes or competitive interaction between two different functional S-haplotypes, has been studied extensively at the molecular level in tetraploid Rosaceae species. In this study, two tetraploid Chinese cherry (Prunus pseudocerasus) cultivars and one diploid sweet cherry (Prunus avium) cultiv...

Self-incompatibility (SI) is a genetic mechanism in many flowering plants by which generative reproduction prevented. The self-incompatibility caused the functions of cell controlled genes called S or genes. results decreased pollination and ultimately yield loss. In apple (Malus domestica L.), multi-allelic S-locus. Approaches S-glycoprotein profiles allele-specific PCR methods using gene for ...