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Research Article Open Access
In the present study, a total of 43 entries consisting of 13 diversified genotypes of tomato along with their 30 F1 hybrids were evaluated during spring- summer season. Data on fruit quality characters were recorded and per cent mid-parent heterosis and better-parent heterosis were determined. Heterosis over mid parent and better parent, however, for most of the characters were in negative direction. Some of the parents having good potentiality for generating high cross combination for most of the quality traits under study have been identified. Selection of crosses on the basis of performance per se seems to be reliable than selection based on the manifestation of heterosis alone. Highest significant heterobeltiosis was expressed by the F1 hybrids Selection 06-01 × Punjab Chhuhara (for TSS at immature and turning stage), Selection 06-01 x PT-3 (for TSS at red ripe stage), CLN2070A × PT-3 (for number of locules per fruit) and CLN2070A × Sweet-72 (for pericarp thickness). The Fl hybrids, though showed improved fruit quality in terms of TSS at immature stage, TSS at turning stage, TSS at red ripe stage, number of locules and pericarp thickness.
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Author(s): Savita and J P Singh
Relative heterosis, Heterobeltiosis, Heterosis, TSS, Locule, Pericarp thickness., Plant Biotechnology