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1 results

  • Genetic Diversity in the Brazilian Species of Adesmia DC (Leguminosae) as Assessed by RAPD

  • Paula Menna Barreto Dias, Miguel Dall'Agnol, Maria Teresa Schifino-Wittmann
  • Journal:
    Plant Genetic Resources / Volume 2 / Issue 1 / April 2004
    Published online by Cambridge University Press:
    05 December 2024, pp. 43-50
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  • The 17 Brazilian species of Adesmia DC were analysed, using 20 primers, with regard to their randomly amplified polymorphic DNA (RAPD) patterns. From a total of 357 individuals analysed, the 20 primers produced 2249 fragments with molecular sizes ranging from 200 to 2700 bp, 56% of which were polymorphic. Average intra-population genetic similarity, estimated by Jaccard's coefficient, ranged from 0.35 in A. araujoi to 0.80 in A. punctata. Mean intra-specific genetic similarity varied greatly among species, ranging from 0.19 for A. tristis to 0.89 for A. arillata. Mean genetic similarity among the species, estimated by Dice's coefficient, was 0.56. RAPD markers were efficient at separating all the accessions analysed. The results obtained generally agreed with the partition of genetic variability expected according to the mode of reproduction.