Vol. 6, Issue 2, Part B (2024)

The study investigated the genetic architecture of yield and fruit-quality traits in cherry tomato (Solanum lycopersicum var. cerasiforme) using an F₂ segregating population derived from a cross between two contrasting parental lines. The research aimed to quantify genetic variability, heritability, and trait interrelationships to guide selection strategies for yield and quality improvement. The experiment was conducted under open-field conditions in a randomized complete block design with three replications. Observations were recorded for key quantitative traits such as plant height, number of clusters per plant, number of fruits per cluster, fruit weight, and yield per plant, along with qualitative traits including total soluble solids (TSS), titratable acidity, lycopene content, and ascorbic acid. Statistical analyses, including analysis of variance (ANOVA), estimation of genotypic and phenotypic coefficients of variation (GCV and PCV), heritability, genetic advance, correlation, and path coefficient analysis, were performed. Results revealed substantial genetic variation for all measured traits, with fruit weight, TSS, lycopene, and ascorbic acid showing high heritability and genetic advance, indicating a predominance of additive gene action. Yield per plant was strongly influenced by fruit weight and fruit number, while quality traits exhibited favorable correlations among themselves, suggesting the feasibility of simultaneous improvement. The study concludes that the F₂ population harbors considerable genetic potential for improving both yield and quality in cherry tomato. The identification of high-heritability traits provides an effective basis for selection, and integrating yield and quality indices in early-generation breeding can accelerate genetic gain for both productivity and nutritional enhancement.