Extreme homogeneity among Brazilian wheat genotypes determined by RAPD markers

被引：9
|
作者：
De Freitas, LB [1 ]
Jerusalinsky, L [1 ]
Bonatto, SL [1 ]
Salzano, FM [1 ]
机构：
[1] Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Genet, BR-91501970 Porto Alegre, RS, Brazil
来源：
PESQUISA AGROPECUARIA BRASILEIRA | 2000年 / 35卷 / 11期
关键词：
Triticum aestivum; genetic variation; polymorphism; breeding methods;
D O I：
10.1590/S0100-204X2000001100018
中图分类号：
S [农业科学];
学科分类号：
09 ;
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 10-mer 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.
引用
收藏
页码：2255 / 2260
页数：6
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