Genetic variability studies in cherry tomato for growth, yield, and quality traits in open field conditions

Abstract

The goal of this study was to learn more about the nature and extent of genetic diversity, heritability, and genetic progress in cherry tomatoes for various growth, yield, and quality traits. Ten diverse lines of cherry tomato were crossed in diallel fashion (excluding reciprocals) and evaluated for genetic variability studies in open field conditions. The experimental findings revealed that the phenotypic variation and the genotypic variation were equal in magnitude for all the traits indicating less influence of environment on all these traits. High PCV, GCV, and genetic advance as percent mean was observed for several fruits plant-1, average fruit weight (g), fruit yield hectare-1 (q), reducing sugar (%), non-reducing sugar (%), total sugars (%), titratable acidity (%) and ascorbic acid content (mg100g-1), indicating the additive genetic effect. Phenotypic selection for their improvement could be achieved by simple selection.

Estimation of Variability Parameters, Correlation and Path Coefficient Analysis in F2 Population of Tomato in the Cross Between Line 33-1 × La-1

“…The number of clusters had a positive and significant correlation with the number of fruits per plant (0.45), fruit length (0.17), number of locules (0.19) and TSS (0.15), but a negative significant correlation with average fruit weight (- 0.17). These outcomes are in conformity with the findings of Hussain et al (2021) and Nevani and Sridevi (2021). The number of fruits per cluster had a significant positive correlation with the number of fruits per plant (0.37) negative correlation with average fruit weight (-0.22) and pH of fruit juice (0.15).…”

“…Fruit diameter had a significant positive correlation with rind thickness (0.16) and number of locules (0.27). Other studies reported by Hussain et al (2021) and Begum et al (2022) support these findings.…”

Morphological, biochemical and SSR marker based genetic diversity and identification of trait-specific accessions in exotic germplasm collection of tomato (Solanum lycopersicum L.)

“…It varied from 8.76mg/100g to 55mg/100g. Similar reports on the variations in the lycopene content, TSS and ascorbic acid content are reported byBose et al (2002);Collins and Veazie (2006) andPanthee et al (2012) Hussain et al (2021). reported that the PCV and GCV for total Soluble Solids ( 0 Brix) ranged from 6.86 to 48.78 for reducing sugar (%).…”

“…Fruit color varied from deep red to light yellow. Study conducted byHussain et al (2021) also indicated that the PCV and GCV were found to be higher for Brix and 6.05 0 Brix). The ascorbic acid levels were very high in some of the accessions.…”

Study of genetic variability, heritability, and genetic advance for yield-related traits in tomato (Solanum lycopersicon MILL.)

“…The genotypic and phenotypic coefficients of variability, h 2 , and genetic advance are essential biometric tools used to assess the genetic divergence among the genotypes ( Mohamed et al, 2012 ; Pooja et al, 2022 ; Sahoo et al, 2022 ). Genetic variability is the basis for any selection strategy because the larger the genetic variability in the existing population, the greater will be the scope of selection for the improvement of genotypes for the given traits ( Mohamed et al, 2012 ; Hussain et al, 2021 ).…”