BIOTIC STRESSESinoculation. Contrastingly, only the leaflet of L.peruvianum LA2745 remained green in color, and its lesion rarely expanded from the inoculated point even two weeks after inoculation. The results were reconfirmed by repeated experiments. The correlation coefficient between susceptibilities of the leaflet and the stem was very small (r=-0.127ns). However, L. peruvianum LA2745, L. hirsutum LA2314, and L. pimpinellifolium LA1246 showed a high level of resistance, both in the leaflet and stem. Although Solanum lycopersicoides, a wild relative species of tomato, was reported to possess resistance to the gray mold (Gradziel and Robinson 1989), S. lycopersicoides accession LA2386 used in the present study failed to show high resistance either in the leaflet or in the stem. Recently, hybrids between cv. 'Sekaiichi' (~br short, SK) and LA2745, and between SK and LA 1246 have been raised. The leaflet of the hybrids of LA2745 indicated on as high resistance as LA2745, while the leaflet of the hybrids of LA1246 was not so high in resistance. Then, it was suggested that the resistance of LA2745 is controlled not by the environmental factor(s), but by the dominant genetic factor(s). ReferencesGradziel T. M., Robinson R. W. 1989. Solanum lycopersicoides gene introgression to tomato, Lycopersicon esculentum, through the systematic avoidance and suppression of breeding barriers. Sex. Plant Reprod. 2: 43-52. O'Neill T. M. 1994. Resurgence of tomato stem Botrytis. Grower 122: 54-55. Urbascb I. 1986. Resistenz verschiedener Kultur-und Wildtomatenpflanzen (Lycopersicon spp.) gegenuber Abstract A two-year estimation of Botrytis cinerea stem damage of 299experimental Flhybrids grown in 2 rotations: winter-autumn and summer-autumn was carried out. The estimation was made in a period of mass fruitage.As a result it was shown, that the hybrids with determinate type of growth (sp) are damaged more strongly than indeterminate ones (sp +). An average disease severity in the first group was 2.8 against 2.3 in the second one using a scale 0-4. Number of strongly injured (2.5-4) plants in each group were 44.1% and 30.7 % and number of moderate resistant (0-1.5 numbers) plants were 10 % and 8.5 % accordingly.The analysis of resistance of F1 hybrids determined significant influence of parental.lines on a degree of a damage of plant stems by B. cinerea.

A study was conducted to evaluate the effect of LED lighting on the growth of seedlings of hybrid tomato plants. Four hybrids (Captain F1, Refiner F1, Coral Reef F1 and Fire F1), seven treatments of irradiators (monochromatic red, green, blue, white) and three dual light treatments (green+blue, blue+red, green+red) were carried out in the laboratory of artificial climate. Radiation with monochromatic had a role in increasing hypocotyl length, the height of plant, transpiration and stomata connection. The results have shown a significant effect on radiation with monochromatic red on hypocotyl length (73.00mm) and the height of plant (30.94cm). Plants radiation with monochromatic blue gave the highest transpiration (4.69 mmol/m2.s) and stomatal conductance (0.30 mol./m2.s). The dual radiation had a role in increasing dry weight for the plant and leaf chlorophyll content (SPAD). Radiation with (green+red) provided the best stem dry weight (0.91g). Plants irradiated with (green+blue) exhibited the highest leaf dry weight and root dry weight (1.96g and 3.12g respectively). Plants radiation with (blue + red) showed the highest leaf chlorophyll content (SPAD) (559.19). In the monochromatic light, the effect of hybrid Fire F1 showed the highest hypocotyl length (64.11mm) and height of plant (29.00 cm), and hybrid Refind F1 had the highest transpiration (3.58 mmol/m2.s) and stomatal conductance (0.23 mol./m2.s). In the binary spectral effect, the hybrid Coral reef F1 resulted the highest stem dry weight, leaf dry weight and root dry weight (0.68 g,1.76 g and 2.39g respectively), and hybrid Refind F1 had the highest leaf chlorophyll content (SPAD) (468.27).

Представлена характеристика детерминантного гибрида томата F1 Персиановский с розовой окраской плодов, обладающего высокой устойчивостью к растрескиванию. Рассмотрены отдельные элементы технологии возделывания гибрида в открытом грунте, обеспечивающие получение урожайности более 80 т/га с высоким качеством продукции.In this article we present the characteristic of determinat hybrid tomato F1 Persianovskij with pink color of fruits and with high resistance to cracking. Considered separate elements of cultivation technology of hybrid in southern Russia outdoors, provide yields of over 80 t/ha with high quality products.

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Представлена информация о сортименте Агрохолдинга «Поиск» для супер- и гипермаркетов по таким основным овощным культурам, как капуста белокочанная, морковь и свекла столовая, лук репчатый, томат, перец, огурец и др. Указаны направления селекционной работы по этим культурам, приводятся требования торговых сетей к поставляемой продукции, а также описание наиболее востребованных сетями сортов и гибридов.Information on cultivars of Poisk Agro Holding for super- and hypermarkets in major vegetable crops like cabbage, carrot and red beet, onion, tomato, pepper, cucumber etc. is given. Directions of the breeding work on these crops are indicated, requirements of trading net markets to supply products are given, as well as a description of the most popular net markets cultivars and hybrids.