M. Delavega et al., ECOGEOGRAPHICAL DISTRIBUTION AND DIFFERENTIAL ADAPTEDNESS OF MULTILOCUS ALLELIC ASSOCIATIONS IN SPANISH AVENA-SATIVA L, Theoretical and Applied Genetics, 88(1), 1994, pp. 56-64
We determined the nine-locus isozyme genotype of 267 landrace accessio
ns of Avena sativa from 31 provinces of Spain. Our results establish t
hat level of genetic variability is usually high both within and among
accessions of this heavily self-fertilizing hexaploid grass and that
multilocus genetic structure differs in various ecogeographical region
s of Spain. We concluded that selection favoring different multilocus
genotypes in different environments was the main integrating force tha
t shaped the internal genetic structure of local populations as well a
s the overall adaptive landscape of A. sativa in Spain. Implications i
n genetic resource conservation and utilization are discussed.