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Genetic and Phenotypic Variation Among Faba Bean Landraces and Cultivars

Landraces of crops can contain phenotypic and genotypic variability that can be exploited so that new lines can be developed. The phenotypic and genotypic variability among 11 Jordanian faba bean (Vicia faba L.) landraces and five imported cultivars were studied. Yield and 12 yield components and yield-related traits were evaluated at two locations. Analysis indicated significant variability among germplasm for all characters and among locations for 10 characters, in which final plant height, pods/plant, and seeds/pod were not significant. Genetic variability and relationships among germplasm were established using 12 single sequence repeat (SSR) primer pairs. Eleven primers were particularly efficient in amplification of banding patterns among germplasm. The overall polymorphic percentage for the 31 loci generated by 11 SSR markers was 84%. This was sufficient to estimate genetic variation among faba bean germplasm. The unweighted pair group method with arithmetic average ordered germplasm into three groups based on a Dice similarity coefficient of 0.71, range 0.7 to 0.89. Clustering based on phenotypical traits indicated five smaller groups that were consistent with the three larger SSR-based groups. These landraces can be used for future faba bean breeding programs and derivation of new plant lines.