Seed Protein Electrophoresis in Agropyron junceum (L.) P.B. Complex

Agropyron striatulum (Elymus striatulus Run.) 2n = 14, A. rechingeriRun. 2n = 28, A. junceum (L.) P.B. subsp. boreoatlanticum simonetet Guinochet (A. junceiforme Löve and Löve) 2n = 28,A. junceum (L.) P.B. subsp. mediterraneum Simonet (A. junceum(L.) P.B.) 2n = 42 and A. diae (Elymus diae Run.) 2n = 56 werestudied by isoelectric focusing of seed soluble proteins. The electrophoretic phenotypes obtained from the five materialsshowed a striking degree of similarity. The typical proteinprofile was recognized to consist of 40 bands. No qualitativeprotein phenotypic differences were found and all observed variationconcerned the intensities of some particular bands. The data of the present study combined with cytological informationprovided by other workers indicate that in the composition ofthe polyploid taxa another genome besides that of the diploidA. striatulum is not likely to participate. Consequently thepolyploid taxa of A. junceum (L.) P.B. complex can be characterizedas segmental allopolyploids with the same basic genome moreor less modified at different ploidy levels. Agropyron junceum (L.) P.B. complex, seed storage proteins, protein profile, isoelectric focusing, genomic constitution, segmental allopolyploids