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Showing 2 results for Genetic Resources
Batol Gheitarani, Javad Erfani-Moghadam, Arash Fazeli, Volume 6, Issue 2 (3-2020)
Abstract
The common fig (Ficus carica L.), one of the most important fruit species, belongs to Moraceae family and is widely distributed in Iran. In this study, genetic variations among some genotypes of common fig collected from six different regions of Ilam province (Iran) were evaluated based on RAPD and ISSR markers. A total of 73 and 29 alleles were produced by 14 RAPD (with their sizes ranging from 350 to 2500 bp) and 5 ISSR (with their sizes ranging from 150 to 1500 bp) primers, respectively. The number of observed alleles for RAPD primers ranged from 1 (OPA-03) to 9 (OPA-09 and UBC-429), with an average of 5.21 alleles per locus. Also, the number of observed alleles for ISSR primers ranged from 3 (UBC-807) to 8 (UBC-810 and UBC-414), with an average of 5.8 alleles per locus. The highest and lowest values of Shannon's information index (I) was observed in the UBC-429 (2.18) and OPA-03 (0.12) primers, respectively. The Jaccard's genetic similarity coefficient ranged from 0.12 to 0.73 among genotypes based on RAPD data, while for ISSR it was recorded from 0.07 to 1. Also, based on RAPD and ISSR data at a similarity coefficient of 0.45, the unweighted pair group method with arithmetic mean (UPGMA) cluster analysis divided the genotypes into six major groups. As a conclusion, there is a high genetic variability among fig genotypes, which is an important consideration for classification, utilization of germplasm resources and breeding programs of fig.
Saeid Navabpour, Ahad Yamchi, Sasan Golcheshmeh, Volume 8, Issue 1 (8-2021)
Abstract
The present study was performed to classify and study genetic diversity between Calotropis procera accessions from different regions of Kerman province (Iran) using ISSR markers. In total, DNA from 14 plant samples with nine ISSR primers was amplified by PCR and their banding pattern was obtained. The primers showed acceptable polymorphism (35.93) and minimum and maximum polymorphic information content (PIC) of primers in this study were 0.11 for ISSR9 primer and 0.41 for ISSR3 and ISSR8 primers, respectively. Genetic similarity based on Nei index was varied from 0.405 to 0.745 and the lowest genetic similarity was found between J3 (Related to Jiroft) and D2 (Related to Dosari) and the highest genetic similarity was found between J1 and J2 (both of them for Jiroft). By using UPGMA cluster analysis, samples divided into four groups, and the second and third groups contained more accessions. In terms of genetic similarity, two accessions of Jiroft 1 (J1) and Jiroft 2 (J2) which classified in the same cluster were closer. Also, the accessions collected from Anbarabad were at a longer genetic distance than other accessions. Principal coordinate analysis also showed that the first and second components justify 67 percent of obtained genetic diversity. In general, ISSR markers were useful for classifying Calotropis procera accessions and according to the obtained information about existence of genetic diversity between Calotropis procera accessions of Kerman province, this diversity could be useful in the future for breeding and production of Calotropis procera.
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