%0 Journal Article %T dependence of productivity of wheat of different biological groups on parameters of the assimilatory device of plants in the forest-steppe of the Orenburg Cis-Urals %A Mukhitov, L.. %A Samuilov, F.. %K spring wheat, variety, biotype, the relationship of leaf area and photosynthetic capacity and plant productivity. %J Vestnik of Kazan State Agrarian University %D 2014 %N 8 %P 5 %I Kazan state agrarian University