Perfection of estimation methods of sowing qualities of sunflower seed depending on climate changes (review)

There are presented data about additional methods of estimation of sowing qualities of sunflower seeds basing on analysis of Russian and foreign scientific literary sources. There is described a methodology of test conducting on accelerated ageing, germinating in cold soil, physical stress effect, changing of osmotic pressure and salinity. There are considered processes connecting with climate changes and possible ways of compensation of unfavorable weather conditions impact. A question of reasonability of introduction of new estimation methods to increase efficiency of sunflower production is discussed.