N. Cronberg et al., GENETIC DIVERSITY AND PHENOTYPIC VARIATION IN MARGINAL POPULATIONS OFTHE LOCALLY ENDANGERED SPECIES HORDEUM-SECALINUM (POACEAE), Plant systematics and evolution, 206(1-4), 1997, pp. 285-294
Electrophoresis was used to compare variation in hordein polypeptide p
atterns and isozymes in five marginal populations of Hordeum secalinum
(four Swedish and one Danish population) and four populations along t
he Atlantic coast from Denmark to Spain. Hordein patterns were uniform
within and among Swedish and Danish populations whereas the materials
from France and Spain were divergent. The banding patterns for nine i
sozymes (AAT, IDH, MDH, PGD, GPI, ME, ACP, EST, and PRX) agreed with t
hose reported for other Hordeum species. All putative loci were monomo
rphic with the exception of PRX, which showed three different phenotyp
es. The five marginal populations varied in seed set and cultivated pl
ants differed in phenological traits.