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Study of genetic divergence among wheat genotypes through random amplified polymorphic DNA

A. Iqbal, A.S. Khan, I.A. Khan, F.S. Awan, A. Ahmad and A.A. Khan
Centre of Agricultural Biochemistry and Biotechnology,
University of Agriculture Faisalabad, Pakistan
Corresponding author: F.S. Awan
E-mail: [email protected]

Genet. Mol. Res. 6 (3): 476-481 (2007)
Received July 31, 2006
Accepted June 5, 2007
Published August 7, 2007

ABSTRACT. The degree of genetic divergence was estimated in seven wheat genotypes, six exotic genotypes and one local variety, through random amplified polymorphic DNA methodology. A total of 112 DNA fragments were generated by the 15 random primers, with an average of about 7.4 bands per primer. Among the 112, 50 fragments showed polymorphism among the seven wheat genotypes. Nei and Li’s similarity matrix ranged from 86.2 to 93.0%, which indicated a narrow genetic base among the genotypes. The maximum similarity, 93.0%, was observed between 12WLRG/1-12 and WL-43. The local variety, Chenab-70, showed the lowest similarity with the exotic types. We conclude that random amplified polymorphic DNA analysis can be used for the characterization and grouping of wheat genotypes; these results will be helpful in our wheat breeding program.

Key words: Genetic diversity, RAPD, Triticum aestivum L.

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