Investigation the heterosis, pollen and maternal tissue effects in qualitative characteristics of fruit in tomato
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2016, Vol 8, Issue 4
Abstract
To investigate the magnitude of heterosis, metaxenia and cytoplasmic effects of qualitative traits, such as the percentage of total soluble solids, the percentage of titratable acidity, pH, total soluble solids/titratable acidity ratio, vitamin C, lycopene, β-carotene, total phenol, total flavonoids and antioxidant content of tomato fruit, five diverse tomato genotypes were evaluated in a complete diallel cross design. The analysis of variance showed that there is a high significant difference among lines and their hybrids for all the traits. There was a significant difference between hybrids especially among parents for all the traits due to metaxenia effect. As a result of cytoplasmic effect, highly significant differences were observed among some hybrids and their reciprocal crosses for all the traits. High amount of heterosis based on mid parents was observed for lycopene (157.92%) and vitamin C (100.00%), while high amount of heterosis based on the best parent was observed for lycopene (116.62%).The results are evidence for the existence of metaxenia, i.e. an effect of pollen on maternaltissues, in tomato fruits.The genetic variations in the different source of pollen can serve as the basis for selection of pollinizer to improve fruit quality depending on the market demand.
Authors and Affiliations
Jamileh Rahaii, Moazam Hassanpour Asil, Habib Allah Samizadeh, Rasoul Onsinejad
Keywords
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