Abstract:
The study was initiated to generate genetic information on characters associations for tomato genotypes maintained under Ethiopian conditions. Twenty three tomato (Lycopersicon esculentum Mill.) genotypes were evaluated to estimate the nature and magnitude of associations of different characters with fruit yield and among themselves at Bako Agricultural Research Center (Western Ethiopia) during October 2007 to May 2008. The experiment was conducted using a Randomized Complete Block Design with three replications. Yield per plant showed positive and significant genotypic and phenotypic correlation with fruit clusters per plant (rg = 0.448*, rp = 0.442*) and fruits per plant (rg = 0.505*, rp = 0.461*) which indicated that these traits play important role in yield improvement. Fruit clusters per plant showed positive and significant genotypic and phenotypic correlation with yield per plant by having positive direct effect at both levels, indicating the true relationship between them and the feasibility to exploit the potentiality of this trait for effective direct selection to improve yield per plant. Genotypic and phenotypic path coefficient analysis revealed that positive direct effects were exerted by days to flowering, fruit clusters per plant and plant height on yield per plant, suggesting their importance in yield improvement and that these traits would be considered in selection program.
Jiregna Tasisa, Derbew Belew and Kassahun Bantte, 2012. Genetic Associations Analysis among Some Traits of Tomato (Lycopersicon esculentum Mill.) Genotypes in West Showa, Ethiopia. International Journal of Plant Breeding and Genetics, 6: 129-139.
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