The author has estimated the effect of the cultivar-rootstock interaction peculiarities on the parameters of the apple winter cvs ‘Ascol`da’ and ‘Spartan’ on the IS series rootstocks. Dwarf and semi – dwarf combinations have been selected which are the most favourable for the establishment of this crop high – densed orchards in the Lisosteppe of Ukraine.

Investigational development of modern treater seed of agricultural cultures status. The analysis of efficiency of work control the system modem treater seed is conducted. The ground of creation of cont rol the system by the concerted serve working liquid (liquid poison) and seed is conducted in the working area of treate.

As a result of the lead long-term selection works wint involving a World' s collection and intertype and intertype hybridization with purposeful selection on economic-biological attributes highly productive • grades of a winter wheat, with stability to various kinds of illnesses and high technological qualities of grain have been allocated. The adapted grades of a winter wheat for a various environment of various zones of the countries of the Central Asia that allows to realize potential opportunities of grades in different environments of cultivation and by that to prevent losses of a crop from biotic and abiotic stresses that allows to stabilize productivity and adaptability of culture in a zon winter husbandry are created. The long-term field experiences lead by us and laboratory analyses on a level of productivity, qualities of grain and stability to stresses allows to conclude, that alongside with a genotype, stabilityenvironmental conditions render strong and significant influence on all complex of selection attributes.

The author presents the characteristies of the best stone fruit crops cultivars of the Donets’k breeding which are high adapted to the climatic conditions of the Donbass and Ukrasne’s northern regions and have marketable fruits.

Tere are discussed results of joint Bukovino-moldavian corn breeding programmer, as a result which are created two registered hybrids, one perspective, and new material for the further work.

When studying period of maturation after harvest, varietal specificity of level of winter wheat seed maturation process reaction on hydrothermical factors has been revealed. This trait should been taken into consideration when deciding practical problems in respect to rational variety-regionizing as well as to development of seed technology based on biological peculiarities.

There provided brief description of genetic, biological and morphological and qualitative characteristics of new short-stem large-grain synthetic of Zabava winter rye. Essential negative genetic correlation of the output plants height, and positive correlation of seed size and number of seminal roots with grain yield of Zabava winter rye, has been established. Joint cooperation is proposed to put the new variety in production.

As a result of the lead long-term selection works wint involving a World' s collection and intertype and intertype hybridization with purposeful selection on economic-biological attributes highly productive • grades of a winter wheat, with stability to various kinds of illnesses and high technological qualities of grain have been allocated. The adapted grades of a winter wheat for a various environment of various zones of the countries of the Central Asia that allows to realize potential opportunities of grades in different environments of cultivation and by that to prevent losses of a crop from biotic and abiotic stresses that allows to stabilize productivity and adaptability of culture in a zon winter husbandry are created. The long-term field experiences lead by us and laboratory analyses on a level of productivity, qualities of grain and stability to stresses allows to conclude, that alongside with a genotype, stabilityenvironmental conditions render strong and significant influence on all complex of selection attributes.

The possibilities of utilizing testers different genetical structure are considered. The peculiarities of testers productivity formation are ascertained. The dynamics of influence inbreed lines, testers and one's interaction on hybrids productivity are investigated. The peculiarities of hybrids productivity formation depending on utilizing testers and one's combining are indicated.

The author has estimated the effect of the cultivar-rootstock interaction peculiarities on the parameters of the apple winter cvs ‘Ascol`da’ and ‘Spartan’ on the IS series rootstocks. Dwarf and semi – dwarf combinations have been selected which are the most favourable for the establishment of this crop high – densed orchards in the Lisosteppe of Ukraine.