Abstract

ABSTRACTThere is a need to expand the information on genetic relationships between tomato (Solanum lycopersicum L.) varieties to improve hybridization breeding. The genetic diversity and relationships among 12 tomato varieties were evaluated by intersimple sequence repeat (ISSR) markers. A total of 69 bands were generated with 9 ISSR primers, of which 53 bands were polymorphic (65.2%). The mean polymorphism index content was 0.29. There was a high degree of polymorphism between tomato varieties. Cluster analysis, based on Jaccard similarity coefficients, grouped varieties into four main clusters. The types of data obtained from this study can be used to select appropriate parents in tomato hybridization breeding. The cv. Super chief had the greatest genetic distance from other varieties and is suitable for hybridization to achieve maximum variability for selection in segregating populations.

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