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.

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The high antioxidant content in fruits of tomato and sweet pepper is determined as a characteristic of nutritive value as well as medical purposes. The analyses snowed that the antioxidant activity was different in cultivars type of tomato and sweet pepper taken for testing. It was shown that the antioxidant activity in a fruit juice of sweet pepper was 2.5 times as much as in tomato juice. The maximum antioxidant activity was observed in hybrids with pink and crimson colored fruits such as N603, Galactika, and also inbred lines of pepper developed by inter-specific crossing of N624 and N1713.