Vestnik OrelGAU, 4(49), August 2014 UDC 635.656:581.19 POLYMORPHISM OF PEA STORAGE PROTEIN CONVICILIN Selikhova T.N., Senior Scientist of Plant Physiology and Biochemistry Laboratory All-Russia Research Institute of Legumes and Groat Crops, Orel City, Russia E-mail: tat.selihowa@yandex.ru Bobkov S.V., Head of Plant Physiology and Biochemistry Laboratory All-Russia Research Institute of Legumes and Groat Crops, Orel City, Russia E-mail: svbobkov@gmail.com ABSTRACT Pea convicilin could hinder physico-chemical properties of protein isolates. <...> Pea accessions without convicilin or with its unusual isoforms could be used in pea breeding on high quality of storage proteins. <...> Polymorphism of convicilin was studied with use of 60 accessions of genus Pisum L. Standard SDS-PAGE electrophoresis was used for separation of storage proteins. <...> They were located on positions 14, 15, 16 and 17 of electrophoretic spectra. <...> Isoform 15 was found with high frequency (0.35). <...> Differences between cultivated and wild pea accessions on frequency of convicilin isoforms were determined. <...> Among 6 breeding lines and varieties of Р. sativum only two (14 and 17) isoforms were revealed. <...> In wild subspecies of Р. sativum (24 accessions) only three (15, 16, 17) isoforms were found. <...> In accessions of wild species Р. fulvum all four revealed isoforms of convicilin were represented. <...> In variety Aest electrophoretic analysis revealed one seed which did not contained convicilin. <...> This seed was characterized by distinguished from other seeds spectrum. <...> The genus Pisum L. contains the two species: P. sativum L., the cultivated pea, and P. fulvum Sibth. et Smith, the red-yellow pea. <...> Species Р. sativum L. includes 6 subspecies: elatius (Bieb.) Schmalh., syriacum (Boiss. et Noe) Berger, abyssinicum (A. Br.) Berger, transcaucasicum Makash., asiaticum Govorov и sativum [11]. <...> Electrophoresis of pea storage proteins was used for the identification of various genotypes, characterization of genetic diversity and in taxonomy [9, 12]. <...> The species P. fulvum has recently considered as a perspective object of research [4, 14]. <...> In compare to P. fulvum interest in wild subspecies of cultivated pea <...>