The genus Aegilops has an important potential utilization in wheat improvement because of its resistance to different biotic and abiotic stresses and close relation with the cultivated wheat. Aegilops tauschii grows in Iran, westward to Turkey and eastward to Afghanistan and China with a distribution center in the south of Caspian Sea. In spite of its very good biochemical characterization, the knowledge about the DNA variability is very limited and no DNA markers were used to analyses the genomic variability of the populations, up to date. In the present study, genetic diversity of 117 Aegilops tauschii, individuals nine populations were studied using 10 Start Codon Targeted (SCoT) markers. High polymorphic bands (96.33%), polymorphic information content (0.48) and allele number (1.024) showed SCoT as a reliable marker system for genetic analysis in Aegilops tauschii. At the species, the percentage of polymorphic loci [P] was 66.30%, Nei’s gene diversity [H] was 0.35, Shannon index [I] was 0.33 and unbiased gene diversity [UHe] was 0.37. Genetic variation within populations (59%) was higher than among populations (41%) based on analysis of molecular variance (AMOVA). We used SCoT molecular marker for our genetic investigation with the following aims: 1— Investigate genetic diversity both among and with date Aegilops tauschii, 2—Identify genetic groups within these nine populations Aegilops tauschii, and 3—produce data on the genetic structure of date Aegilops tauschii populations. The results obtained revealed a high within-population genetic variability.
Members of Lonicera are characterized by opposite, narrowly elliptic to obovate leaves, white, yellow, reddish, or purple-red corolla with capitate stigma and undulate calyx margin. In Flora Iranica, Wendelbo (1965) classified 19 species of the Lonicera into two subgenera (Chamaecerasus and Lonicera) and three sections, namely Isoxylosteum, Isika and Coeloxylosteum. The four studied species belong to subgenus Chamaecerasus and sections Isika and Coeloxylosteum. No detailed Random Amplified Polymorphic DNA (RAPD) studies were conducted to study Lonicera genetic diversity. Therefore, we collected and analyzed three species from 2 provinces regions. Overall, 45 plant specimens were collected. Our aims were 1) to assess genetic diversity among Lonicera species 2) is there a correlation between species genetic and geographical distance? 3) Genetic structure of populations and taxa. We showed significant differences in quantitative morphological characters in plant species. The Mantel test showed correlation (r=0.66, p=0.0001) between genetic and geographical distances. We reported high genetic diversity, which clearly shows the Lonicera species can adapt to changing environments since high genetic diversity is linked to species adaptability. Present results highlighted the utility of RAPD markers and morphometry methods to investigate genetic diversity in Lonicera species.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.