Polymorphism of the storage proteins in rye cultivars and populations selected for tolerance to nutrient deficiency.

Danuta Rzepka-Plevneš

Department of Horticultural Plant Breeding University of Agriculture in Szczecin, 8, Janosika Str., 71-424 Szczecin, Poland (Poland)

Miłosz Smolik

Department of Horticultural Plant Breeding University of Agriculture in Szczecin, 8, Janosika Str., 71-424 Szczecin, Poland (Poland)

Abstract

Ten open-pollinated cultivars, two strains of rye and S_l, S₂, S₃ progenies obtained after selection directed towards tolerance to nutrient deficit were used in the study. The aim of the study was to compare the genotypes of the above mentioned rye populations by electrophoretically characterised of their secalin patterns.The result showed that most of the tested rye cultivars revealed simi1ar but not identica1 electrophoretic patterns. Specific secalin patterns were obtained from all the cultivars, except cv. Arant and strain SMH 92. Differences in comparison to initial genotypes were observed in some rye populations in S_l and S₂ generations, including additional polypeptide of molecular weight 43 kDa. It was not linked with rye tolerance to nitrogen and potassium deficit in medium.

Keywords:

differences, electrophoresis, in vitro cultures, nutrient deficit, rye, storage protein, tolerance