Mechanical structure of grapes of Siberian varieties

Vineyards of Russia are characterized by a great high-quality variety of grapes, complex and steady va-rieties occupy increasing spaces. Climatic conditions of Shushenskoe area are favorable for cultivation of uni-versal and technical varieties of grapes of early terms of maturing. For technological assessment of varieties of grapes for the purpose of definition of the direction of their application it is necessary to study mechanical structure of bunches and berries. The results of the re-search on the assessment of mechanical structure of grapes of Siberian varieties growing on the territory of Shushenskoe area of Krasnoyarsk Region are present-ed in the study. As the object of the research the follow-ing grapes varieties served: Tayozhny, Alyoshenkin, Zilga, Bessemyannoy black, winter hardy, Early Magaracha. It was established that the greatest mass of berries varieties grapes had Early Magaracha and made 219.8 g, and the smallest - the variety Taiga (144.13 g). Grapes varieties Alyoshenkin and Early Magaracha caused the stir in higher maintenance of pulp in berry which made 91.9 and 90.8 % respectively of lump of berries. In the varieties Taiga, Zilga and Bessemyannoy black winter-hardy the maintenance of pulp in berries made 66.7-85.84 %. All varieties had comparable maintenance of seeds, thin skin and firm rest (from 17.5 to 21.6 %), except grapes of varieties Taiga (23.8 %) and Bessemyannoy black winter-hardy (10.5 %). For using in winemaking the varieties Early Magaracha and Alyoshenkin are recommended.