Co-efficient of variability, correlation and path analysis of biochemical traits in tomato (Lycopersicon esculentum Mill) for commercial importance

摘要

Systematic study on twenty genotypes of tomato was carried out to delineate potential variability by using coefficient path analysis based on biochemical traits. Both exotic lines and local genotype were examined for biochemical variation for improvement of tomato. Among these moisture content, ash , protein content, fiber, carbohydrate , total soluble solids percentage varied from 88.88-94.10, 0.20-0.64, 0.2-1.8, 0.3-1.27, 0.40-5.90, 3.70-6.60% respectively in the fruits. Maximum genotypic and phenotypic variations were found for moisture and found to be highly heritable whereas, minimum for ash content. Furthermore, genotypic coefficient of variation and phenotypic coefficient of variation values showed positive and significant association of carbohydrates with protein and fiber; however, total soluble solids directly related to ash content (0.0239). Correlation and path analysis confirmed the variability in fruit traits and superiority in fruit nutrition of the tomato germplasm that would be useful for the breeder to exploit the selection and evolution of new tomato varieties.