Genetic distance as a predictor of heterosis and hybrid performance within and between heterotic groups in sunflower

THE RELATIONSHIP BETWEEN HETEROSIS AND GENETIC DISTANCES BASED ON SSR MARKERS IN <i>HELIANTHUS ANNUUS</i>

“…Despite restrictions in application of this approach for prediction of heterosis, the parameters of seed yield and hybrid plant height demonstrated significant correlation with genetic distances calculated via AFLP fingerprinting in sunflower (Cheres et al, 2000). The authors also showed no such correlation with genetic distances calculated on the basis of the coancestry matrix (Cheres et al, 2000).…”

Extensive heterosis in growth of yeast hybrids is explained by a combination of genetic models

“…Previous studies have reported that the more genetically distant the parental lines are, the higher the chances for heterosis in their hybrids (Cheres et al, 2000;Zhang et al, 2010). The expectation of finding more heterosis in crosses between distantly related parents relies on the assumption that dominance complementation is more likely to occur between distantly related parents.…”

Key DNA Markers for Predicting Heterosis in F1 Hybrids of japonica Rice

“…Recent advances in molecular marker technology have made it possible to determine whether genetic diversity between parents at the DNA level can be used as a tool in the analysis of relationship between GS and heterosis. Significant correlations between GS and heterosis have been reported in rice (Ahn et al 1998, Liu andWu 1998), maize (Smith et al 1990), wheat (Corbellini et al 2002), sunflower (Cheres et al 2000) and rapeseed (Diers et al 1996). On the other hand, weak or non-significant correlations have also been reported between GS and heterosis in rice Wu 1998, Zhang et al 1995), maize (Dudley et al 1991, Joshi et al 2001, Melchinger et al 1990, Smith and Smith 1992, wheat (Barbosa-Neto et al 1996, Martin et al 1995, soybean (Cerna et al 1997, Majarrez-Sandoval et al 1997 and in pearl millet (Chowdari et al 1998).…”