Varietal resources make one of the key national priorities. They pose themselves an outcome of intellectual effort by considerable society part - geneticists, breeders, physiologist, biochemists and biophysicists, immunologists and mathematicians, economists, ecologists and variety examiners.

The article features results of studying F1 hybrids of tomato inheriting productivity factors. 21 original hybrid forms and 57 F1 tomato hybrids in green-house have been studied. The efficiency of selecting genotype of valuable plants by genotype is substantiated.

The article highlights economical value of sorghum vulgaris, accession to the market of varietal sources. It provides description of productivity and new varieties of sorghum vulgaris bicolor listed in the State Register of Varieties Suitable for Dissemination in Ukraine.

The high content of phenolic compounds (quercetin-3-O-glycoside, izoramnetine-3-O-glycoside, 4'-metoxykempferol-3-O-glycoside, 4'-metoxyqvercetine-3-0-glycoside, apigenine and luteoline) in flowers of Prunus cerasifera Ehrh. in comparison with Prunus armeniaca L. has been shown. That can be the reason weak susceptibility of generative organs of cherry-plum to Sclerotinia (Monilinia) laxa (Aderh et Ruhl.) Honey.

Вивчено зміни здатності до проростання і схожості насіння жита озимого сортів Інтенсивне 95, Інтенсивне 99 та Сіверське під час зберігання за умов охолодження. Встановлено, що господарську та технологічну довговічність зерно жита зберігає протягом 1–2 років, а біологічну – 5 років. Найвищі показники здатності до проростання і схожості за всіх станів зерна визначено у сорту жита озимого Сіверське, а найнижчі – Інтенсивне 99.

In the article, on the example of different sorts and hybrids of sorgo, efficiency of the use of mineral feed is considered in technology of his growing which positively influences on the size of puff surface and it fotosintetichnu activity, promoting the productivity of plants here.

The short description of varieties of white cabbage, the comparative analysis of the yield of cabbage and density of the cobs.

The article represents results of renewal to officinal pilot models of varieties of long-fibred flax and crown flax to bring in to high-yielding properties to the environmental conditions of areas of Forest Ukraine. There brief descriptions of comparative evaluation of identifications morpho-biological indications plants of varieties to place on control pilot models with plants of varieties to place on standard models. There are installed the authentic of descriptions to officinal pilot models of varieties.

The article represents results of studies mechanized agriculture spicy aromatic species of plants to ecological and agricultural climatic conditions different areas of Steppe and Le-sosteppe of Ukraine. Basic breaking grounds, sowing area under crops, nurture spicy aromatic species of plants taking into account with their biological peculiarities.

The article details schemes of varietal certification of vegetable seed, set up criteria for establishing conformity of seed material moving in the international trade. Guidance has been adopted for field inspection of varieties of vegetable crops on control plots in the course of field inspection, post control and varietal laboratory control.