Extreme homogeneity among Brazilian wheat genotypes determined by RAPD markers

Pesquisa Agropecuária Brasileira

Loreta BrandÃo De Freitas²  Leandro Jerusalinsky²  Sandro Luis Bonatto¹  Francisco Mauro Salzano² 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Biociências Dep. de GenéticaPorto Alegre RS

关键词: Triticum aestivum;    genetic variation;    polymorphism;    breeding methods;    Triticum aestivum;    variação genética;    polimorfismo;    métodos de melhoramento;   

DOI  :  10.1590/S0100-204X2000001100018

来源: SciELO

【 摘 要 】

Random amplified polymorphic DNA markers (RAPD) were used to estimate the variability of 14 genotypes of Brazilian wheat (Triticum aestivum L.), using a set of 50 random 10mer primers. A total of 256 reproducibly scorable DNA amplification products were obtained from 48 of the primers, 83% of which were polymorphic. Genetic distances among genotypes were calculated and a dendrogram and a principal coordinates analysis showing the genetic relationships among them were obtained. Despite the low variability found (average genetic distance of 27%), two groups of genotypes could be identified, which probably reflect how they were formed. Studies such as this one may be important in the planning and development of future improvement programs for this plant species.

【 授权许可】

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