За оригінальною методикою проведено оцінювання стійкості 16 сортів смородини чорної проти комплексу сисних фітофагів: агрусової пагонової попелиці, великої смородинової попелиці, червоносмородинової попелиці, смородинового брунькового кліща, звичайного павутинного кліща. Досліджувані сорти за рівнем комплексної стійкості розділено на 3 групи: стійкі (бали 7 - 6) - Володимирівська, Ювілейна Копаня, Черешнева, Сюїта київська, Німфа, Чернеча, Софіївська, Тітанія; середньо- стійкі (бали 5-4) - Козацька, Дочка Ворскли, Вернісаж, Пам’ятна, Українка, Альта; нестійкі (бали 3 - 2) - Санюта (St), Аметист. Наведено господарську, економічну й енергетичну ефективність сортів.

В статті показана можливість ідентифікації сортів сої за допомогою морфобіологічних властивостей, зокрема тривалості міжфазних періодів. Вивчений поліморфізм сортів сої за комплексом господарських ознак: вмістом білка та олії в насінні сої, урожайністю, масою 1000 зерен.

Development and improvement of a female component of MS hybrids of sugar beet were carried out on the basis of the following methods: inereasing frequency of occurrence of sterility maintainers by means of preliminary saturation of the population with alleles of the x and z genes; the use, as a female form, of simple sterile hybrids from the crossing of sterile lines with unrelated O-types; and also the drawing in of complexes of valuable genes from materials of foreign origin.

Basic results is resulted multidimen-sional statistical analysis of varieties of pea vegetable as initial material for the breeding of new varieties.

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.

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.

Outlook for selection on increased photosynthetic productivity of winter rye plants is discussed. Donors of short-stem resistant to powdery mildew winter rye were bred with erect and drooping shape of leaf blade. In the erect form the apexes of leaf are oriented at the angle drooping form has 45° inrelation to the stem. Incomplete domination of the drooping leaf shape with ratio 1 : 2 : 1 is established. For the first time symbolic designation of dominating genes is offered with drooping leaf blade - StSt, with transitional heterozygote Stst with recessional heterozygote stst. Higher yield of grain in the comparative variety examination was proved to be received for the erect leaf form, which is predetermined by decrease of plant height, increase of kernel weight from ear, as well as of 100 kernels from plant and by quantity of redicles. Drooping leaf blade rye forms are also promising for selection on increased photosynthetic potential.

The results of 39-year large-scale work on apple breeding for the improvement of fruit biochemical composition are discussed. The character of the inheritance of the content of sugar, titrate acids, ascorbic acid and P-active substances in fruit is shown. The brief descriptions of the new varieties with good flavor and harmonic combination of sugar and acidity are given. The prospects of the trend are shown.