Genetic Variability of Different Jordanian Almond Prunus Amygdalus L. Landraces Revealed by Morphological Traits and RAPD Markers

The relationship among six Jordanian almond landraces was studied using morphological traits and RAPD analyses. Across studied, nut shape, kernel size, length, shell length That showed a high level of variation (CV>30%), while width, internodes width comparatively low values (CV<20%). Principal component analysis that the first five components explained all investigated. Kernel were predominant in three contributing to most total existed landraces. Euclidean distance used construct clusters from data which allocated individuals into two main groups with ranging 5.5 10.14. Hajari, Hami Hallo, Mukhmaly small fruit sizes composed one cluster, other (Oga, Fark, Abu Dabos) large cluster. Out 62 pre-screened primers, 12 reproducible bands maximum polymorphism selected for diversity analysis. Seventy-one scored 28 them being polymorphic. Average value polymorphism/primer ranged 20% 74.2%. Nei's genetic coefficient 0.5 0.85 an average 0.70. Molecular revealed inconsistent separation compared based on traits. Although found during screening Ajloun area are limited number, but considerable observed both at DNA levels indicating rich valuable materials improvement.