Study of genetic diversity using morphological traits and target region amplified polymorphism (TRAP)‎ marker in wheat

Abstract EN

This research was conducted to study the genetic variation among Seventy three wheat genotypes collected from different regions (65 bread wheat and eight durum wheat entries) using both agro-morphological traits and target region amplified polymorphism (TRAP) marker.

The results showed significant differences among genotypes for all agro-morphological traits.

The Euclidean distance based on these traits among all genotypes ranged from 0.99 to 15.41.

The dendrogram distinguished 73 genotypes of wheat into eleven clusters.

Cluster-1 contained the most of tetraploid wheat genotypes except G7 which separated alone in cluster-9.

The other clusters contained the bread wheat genotypes, which cut off in groups according to the agro-morphological characteristics convergent.The seven TRAP markers combinations amplified a total of 86 DNA fragments from all tested genotypes.

The TRAP dendrogram grouped the 73 wheat genotypes into two major clusters with genetic similarity at 0.92.

While, one genotype, G49, separated in a single branch from the other genotypes, reflecting a relatively longer genetic distance from the other genotypes.Highly significant positive correlation were found between TRAP markers data and morphological traits (r = 0.31: p = 0.01).