Combining Ability and Gene Action Studies for Heat-tolerance Physio-biochemical Traits in Tomato

Genetic divergence among processing tomato hybrids and formation of new segregating populations

“…This result indicates that much of the phenotypic variability between hybrids is genetic, favoring the selection of the most promising genotypes, which contributes positively to maximizing genetic gain with the selection process. Other studies show a range of heritability estimates for various agronomic traits and fruit postharvest quality in tomato, facilitating the selection of the best individuals in tomato breeding programs (Bhattarai et al, 2015;Shapturenko et al, 2015). Tomato breeding programs aimed at exploring hybrids perform many crossings between lineages with the intention of forming hybrids that have concomitant high yield, high soluble solids content (SS), proper titratable acidity (TA), high lycopene content (LIC), and a high content of reducing sugars (RS), as well as resistance to the major crop diseases.…”