State qualification expertise is the main stage in the formation of the national variety resourses of sunflover

Abstract

Main tasks of the state expertise of plant varieties, its role in the formation of sunflovers variety resourses are analyzed, a comparative estimate on the number oe regionized home end foreign varieties end hybrids of sunflover during over 30 years and the characteristic of alterations in qualitative indices in the last decade  are presented. The structure  of the currend composition of sunflover hybrids in the State Variety List and the main perspective directions in this crop breeding are studied