According to the seed quality indices the soft winter wheat seeds quality which were included in to the State Register of ріалі varieties of Ukraine in 2008 was defined (consistence of the albumen, flour s-rength. bread size). In the steppe area the consistence of albumen in seed was not changed. In the forest-steppe area seed quality markers improved and drew near the seed quality markers of the steppe area. More then 80% of wheat varieties, produced by Ukrainian breeders are considered to be strong and valuable by the seed quality verse 19,4 % of foreign varieties. That means that the varieties of the Ukrainian breeding are competitive.

In the article the recommendations of UPOV concerning identifying of varieties of cutting lettuce in the characteristic of steadiness to the powdery mildew (Bremia lactucae Regel) using assessment of the reaction of each specific feature of the famous virulent Dm component or those, which have in their genic structure, at leaset Dm genes, that further the defining of famous and non famous, present or absent Dm genes at the moment of variety identification. The nomenclature system of Dm genes is considered to be international for the description of cutting lettuce varieties Dm genes components.

Possibility of heterosis effect approbation by using synthetic varieties of winter rye was discussed. Heterosis level of first five generation of rye synthetics did not decrease. Considerable yield decrease of winter rye grain took place in later generations. Concept of synthetic varieties of winter wheat creation in Ukraine is prospective, though it requires scientific, economical and legal improvement.

The results of cultivating of isolated apple anthers of immune to scab varieties are described. The peculiarities of callus formation using picloram are shown.

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 paper covers results of studying entries of winter wheat competitive strain test for adaptive traits and characteristics of new high producing, winter-hardy cultivar Kolos Myronivshchyny.

Varietal supply with fodder crops of Ukraine’s market and DUS-test of new varieties of plants in 2006 on their suitability for dissemination were analyzed in the article.

The paper covers results of studying entries of winter wheat competitive strain test for adaptive traits and characteristics of new high producing, winter-hardy cultivar Kolos Myronivshchyny.

In the collection initial material of china squash we found the variety from China Zoria Schodu (Star of Orient) with short length of stem. It is the new genetical donor for the breeding «bush» varieties. Inheritance length of stem in china squash is dominant.

It has been found that post registration variety studying facilitates deeper and overall research of the morphological, agricultural, and biological characteristics and properties of the varieties, as well as it allows to generate national variety resources, based on the selection of complementary varieties for narrow zones and regions. Influence of the agricultural technologies on productivity of different winter wheat types has been studied. Expediency of the post-testing variety studying on two levels of agricultural backgrounds, optimization of the research program, of the research plot areas, diversification of the protective measures against diseases, have been explained.