Genetic variability and phylogenetic relationships studies of Aegilops L. using some molecular markers
By: Mahjoub Asma, Mguis Khaled, Ben Brahim Nadia
Key Words: Aegilops L., AFLP, ISSR, IRAP, Molecular markers, RAPD, SSR.
Int. J. Agr. Agri. Res. 8(5), 14-25, May 2016.
Studying of genetic relationships among Aegilops L. species is very important for broadening the cultivated wheat genepool, and monitoring genetic erosion, because the genus Aegilops includes the wild relatives of cultivated wheat which contain numerous unique alleles that are absent in modern wheat cultivars and it can contribute to broaden the genetic base of wheat and improve yield, quality and resistance to biotic and abiotic stresses of wheat. The use of molecular markers, revealing polymorphism at the DNA level, has been playing an increasing part in plant biotechnology and their genetics studies. There are different types of markers, morphological, biochemical and DNA based molecular markers. These DNA-based markers based on PCR (RAPD, AFLP, SSR, ISSR, IRAP), amongst others, the microsatellite DNA marker has been the most widely used, due to its easy use by simple PCR, followed by a denaturing gel electrophoresis for allele size determination, and to the high degree of information provided by its large number of alleles per locus. Day by day development of such new and specific types of markers makes their importance in understanding the genomic variability and the diversity between the same as well as different species of the plants. In this review, we will discuss about genetic variability and phylogenetic relationships studies of Aegilops L. using some molecular markers, with theirs Advantages, and disadvantages.