%0 Journal Article %T The size of under-ear interstice and productivity of spring soft wheat varieties of different ecological groups in the forest-steppe of Orenburg region %A Mukhitov, L.. %A Samuilov, F.. %K variety, wheat, ecotype, interstice, assessment of stability, productivity. %J Vestnik of Kazan State Agrarian University %D 2014 %N 9 %P 3 %I Kazan state agrarian University