Genetic Variation in Superior Tomato Genotypes Collected from North West of Iran

Heterogeneous landrace populations are important sources of genetic variation and are utilized for agronomic and genetic improvement of the crop in plant breeding programs. Therefore, thirty tomato landraces collected from North West of Iran with three commercial cultivars Korall, Fauna and Peto Early CH were studied in completely randomized design in four replications at the Kahriz Station of Agriculture and Natural Resources Research Center of West Azerbaijan. Analysis of variance has shown the significant difference among genotypes for all the evaluated characters. The highest and lowest of heritability were observed for number of seeds per fruit and number of flowers per inflorescence respectively. In principal component analysis, the first five components clarified 77% of total variations in tomato germplasm. These five components were entitled fruiit pH, yield, vegetative growth, fruit size and fruit maturing respectively. In component yield, characters of fruit weight and fruit diameter had high positive coefficients. The cluster analysis located genotypes into five groups