Influence of a brown sheet rust on the seeds productivity of the psathyrostachys juncea in the south of Middle Siberia

Abstract

In article to be given results of two years' studying of stability of a psathyrostachys juncea to brown sheet rust in collection nursery of initial material in the sukhostepny agroecological region of Khakassia. It is established that the most widespread disease of leaves and stalks of a psathyrostachys juncea is brown sheet rust, which considerably reduces its seed efficiency by 20-30%. High defeat is revealed by brown sheet rust of such numbers: K 21; K 23; K 24; K 25; K 26 which considerably reduced seed efficiency from 1.46 to 10.12 g, and sortoobrazets K1; K 2; K 3; K 9; K12 showed the greatest resistance to defeat, with high productivity from 12.49 g up to 44.47 g 66.6%, or 20 numbers, with high brown sheet rust resistance (defeat was absent) and 20%, or 6 numbers, with strong susceptibility to brown rust, are analysed.