ТAXONOMIC STATUS OF LEYMUS BURIATICUS (POACEAE) BY THE RESULTS OF MORPHOLOGICAL ANALYSIS AND SDS-ELECTROPHORESIS OF STORAGE ENDOSPERM PROTEINS AND HISTON H1
N.K. BADMAYEVA1, A.S. LIPIN2, A.V. AGAFONOV2
1Institute of General and Experimental Biology, SB RAS, Ulan-Ude, Sakhyanovoy st., 6
badmayevan@mail.ru
2Central Siberian Botanical Garden, SB RAS, 630090 Novosibirsk, Zolotodolinskaya st., 101
agalex@mail.ru
Abstract
A comprehensive study of the critical taxon Leymus buriaticus Peschkova was carried out in comparison with
natural and cultivated populations of L. littoralis and L. chinensis from various localities in Buryatia. The factorial
analysis performed by 15 morphological characters showed that L. buriaticus occupied an intermediate position
between L. chinensis and L. littoralis. SDS-electrophoresis of individual seeds showed presence of similarity
of relations between samples identified as L. buriaticus and selected samples of L. littoralis and L. chinensis in
mixed population from a classical locality. The analysis of subfractional composition of histon Н1 also revealed
presence of common subfractions of L. littoralis, L. chinensis and L. buriaticus. It was concluded that the endemic
L. buriaticus was of a hybrid origin.
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