There is the method represented in the article for frost resistance determination for Winter Wheat (soft and hard) varieties by experts’ assessment of varieties submitted for Official Variety Studying. Prescribed temperature limits for artificial freezing of the plants, example varieties for frost-resistance groups, are indicated.

It is presented the description of garden pea new varieties which are included into the State Register of plant varieties, which are suitable for the dissemination in Ukraine in 2008 year, morphological features of the crop and its value, either food or dietetic plant.

The yields result of different varieties winter wheat in four State variety testing station of Cherkassy region is shown. Most ecological plastic varieties are determined.

The studying results of drought resistance for 15 varieties and 6 forms of apricot in the condition of South of the Ukraine have been given. The plants with different level of drought resistance have been selected from apricot varieties and forms introduced on the South Coast of the Crimea. From the studied varieties the most drought resistance ones are: Vardaguin Vagdaas, Luchak Sumbarskiy, Sulina, LE-132. Two best apricot varieties have been recommended for use in selection on this character

Results of research on application of plant growth regulators in cultivation of Onion Napiform from seeds in non-irrigated grain-vegetable crop rotation of Northeast Forest-steppe of Ukraine. Efficiency of seeds presowing damping was established, in the solutions of preparations Baikal EM and Emistim С and in the solution of preparation Emistim С for double use - of seeds presowing damping and of plants spraying in 5-6 leaves phase.

The study of impact of complex application of biological compositions based on fixing nitrogen by microorganisms and plant lectin and nitric fertilizers on productivity and quality of grain of winter wheat on the dark-grey soil in the field terms was conducted. It is shown, that presowing treatment of seed by biological compositions stimulated forming of greater productivity with the best quality.

State of national recourses of Sown Lettuce is considered, as well as way of their formation. Methodological aspects of biological potential utilization of Sawn Salad (leaf, head, Rome, stem) are displayed to widen their assortment. Dependence of marginal potentially possible yield of the Sown Lettuce varieties on influence of the environmental causes has been established.

It is definited the coefficients of quantitative signs’ inheritance for new donors of dominant stem shortness in winter rye. It is proved the genetic conditionality of plant height’s display for three new donors, which s controlled by aditive genes mainly. It is definited the laws of display and inheritance of other utilitarian signs of new donors Gnom 1, Gnom 2 and Gnom 3. The study of genetic associations of paternal forms’ height with the descendants’ quantitative signs enables to define the strategy of selectional use of dominant stem shortness donors in winter rye.

The peculiarities of ice-forming in the stems of 7 cultivars and forms of blackberry have been determined by means of the differential thermal analysis. The authors have established the possibility of controlling the acclimation and loss of frost- resistance by tissues caused by dehydration. The control is possible on the basis of the data about exothermal processes in the tissues.

The infection by phytoviruses and the productivity formation in the new varieties of winter bread wheat in the different years with virus damage were investigated. There were identified the varieties being more tolerant to the observed diseases, among these - the samples with different constituents of tolerance, which could be used in the breeding programs.