Abstract
The Russian wheat aphid (Diuraphis noxia (Mordvilko) is one of the most notorious pests and greatly limits the productivity of wheat and barley worldwide. Assessment of the genetic diversity of new barley germplasm (landraces) at both the genotypic and phenotypic levels may increase the efficiency of plant breeding and marker-assisted selection of desirable plant traits. The objective of this work was to use amplified fragment length polymorphisms (AFLPs) to assess genetic diversity among 24 Egyptian barley landraces and to identify resistance to D. noxia in the landraces. Out of 273 polymorphic bands obtained using eight primer combinations, 35 bands were discriminative AFLP markers and could be used to distinguish the Egyptian barley landraces at the DNA level. An AFLP-based dendrogram, generated by UPGMA cluster analysis, indicated that there is a correlation between genetic similarities and location. The obtained dendrogram clustered the investigated landraces into three main groups. There was significantly less D. noxia feeding damage on plants of several landraces originating near Giza compared to those originating in Sinai or Marsa Matrouh.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
