Nucleotide polymorphism in the Adh1 locus of pearl millet (Pennisetum glaucum) (Poaceae).
We investigated nucleotide polymorphism in the Adh1 locus of pearl millet (Pennisetum glaucum) (Poaceae) by determining the DNA sequence of 20 alleles from 10 individuals. The individuals were sampled from throughout pearl millet's indigenous range and represent both wild and cultivated accessions. Our results indicated that there is little nucleotide polymorphism in the Adh1 locus. Estimates of per site nucleotide polymorphism did not differ significantly between cultivated and wild millet accessions. We compared nucleotide polymorphism in pearl millet Adh1 with nucleotide polymorphism in maize (Zea mays) Adh1 and conclude that the maize Adh1 sample is more polymorphic. Increased polymorphism in maize Adh1 may be attributable, in part, to faster substitution rates in the maize lineage. Analysis suggests that substitution rates in the maize Adh1 lineage are approximately 1.7 times faster than substitution rates in the millet Adh1 lineage.[1]References
- Nucleotide polymorphism in the Adh1 locus of pearl millet (Pennisetum glaucum) (Poaceae). Gaut, B.S., Clegg, M.T. Genetics (1993) [Pubmed]
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