Genetic diversity analysis

Genetic diversity of cultivated and wild tomatoes revealed by morphological traits and SSR markers

R. Zhou, Wu, Z., Cao, X., and Jiang, F. L., Genetic diversity of cultivated and wild tomatoes revealed by morphological traits and SSR markers, vol. 14, pp. 13868-13879, 2015.

In the current study, morphological traits and molecular markers were used to assess the genetic diversity of 29 cultivated tomatoes, 14 wild tomatoes and seven introgression lines. The three components of the principal component analysis (PCA) explained 78.54% of the total morphological variation in the 50 tomato genotypes assessed. Based on these morphological traits, a three-dimensional PCA plot separated the 50 genotypes into distinct groups, and a dendrogram divided them into six clusters.

A novel random amplified polymorphic DNA-based strategy for genetic diversity analysis and identification of tomatoes

X. Cao, Wu, Z., Zhou, R., Jiang, F. L., and Yang, Z. E., A novel random amplified polymorphic DNA-based strategy for genetic diversity analysis and identification of tomatoes, vol. 14, pp. 1650-1661, 2015.

Cultivar identification diagrams (CIDs) provide a rapid and efficient approach for identifying cultivars based on random amplified polymorphic DNA (RAPD) markers. In this paper, 64 tomato cultivars were identified using a CID. Using RAPD profiles, clustering analysis was performed to analyze genetic diversity. The results showed that 8 RAPD primers could completely separate the 64 cultivars according to the obtained polymorphic bands; a CID of the 64 tomato cultivars was then constructed.

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