Uman NUH | today: 02/18/2023
| Author(s) | Marchenko А. B., PhD of Agricultural Sciences, Assistant Professor of the Chair of Crops Technology and Protection, Bila Tserkva National Agrarian University | ||
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| Category | Phytopathology | ||
| year | 2017 | issue | №1, 2017 |
| pages | 95-101 | index UDK | 632.25/.938:582.711.712 | DOI |
| Abstract | As a result of the immunological estimates of aggregate sample collection of genus Rosa L. by lesions of Sphaerotheca pannosa Lev. var. rosae Woronich in conditions of a natural background by a scale accounting, were found that samples of varieties was distributed by manifestation of stability by immune (R) – 26,5 %, practically resistant (R+) – 47,1 %, medium resistant (S/) – 19,2 %, susceptible (S) – 7,2 %, but at this is very susceptible (S+) weren't found. By manifestation of resistance to powdery mildew, samples varieties are divided into sections of groups: tea-hybrid roses: on immune (R) – 22,5 %, practically resistant (R+) – 45 % medium resistant (S/) – 22,5 %, susceptible (S) – 10 %; climbing roses: on immune (R) – 23,3 %, practically resistant (R+) – 53,4 %, medium resistant (S/) – 23,3 %; floribunda roses: the immune (R) – 66,6 %, practically resistant (R+) – 33,4 %; english Roses: on immune (R) – 40,0 %, practically resistant (R+) – 40,0 %, medium resistant (S/) – 20,0 %. In the researched collection, the practical significance for selection as a source of polygenic stability and for agroecology as a factor in the selection of highly-virulent pathotypes of fungus Sp. pannosa Lev. var. rosae Woronich has 50 % samples varieties of group hybrid-tea roses (‘Black Lady’, ‘Black Baccara’, ‘Rose Gaujard’, ‘Russkaya krasavitsa’, ‘Zolotoi Yubilei’, ‘Paradise’, ‘Blue River’, ‘Flamingo’, ‘Monarch’, ‘Emmy’, ‘Janina’, ’Pink Paradise’, ‘Blue Parfum’, ‘Nostalgie’, ‘Norita’, ‘Piroschka’, ‘Red Magic’, ‘White Romance’, ‘Princesse de Monaco’, ‘Red Star’), 57,2 % group of climbing roses (‘Sedaja Dama’, ‘Super Hero’, ‘Wartburg’, ‘New Dawn’, ‘Flammentanz’, ‘Excelsa’, ‘Amethyste’, ‘American Pillar’, ‘Belosnezhka’, ‘Coral Dawn’, ‘Elegance’, ‘Pierre de Ronsard’), floribunda roses group (‘Leonardo da Vinci’, ‘Aspirin Rose’, ‘Jubile du Prince de Monaco’), 80 % of the group of english roses (‘Abraham Darby’, ‘Golden Celebration’, ‘Princess Alexandra of Kent’, ‘William Shakespeare’). For intensive development as for high- and as for low- virulent pathogens, that leads to the appearance of epiphytoties, which accelerate rate of formation and occurrence of aggressive races is contributing to of 50 % of the samples varieties of the group of tea-hybrid (‘Julia Michel’, ‘Alexander’, ‘Dame de Coeur’, ‘Imperatrice Farah’, ‘Karen Blixen’, ‘Kardinal 85’, ‘Krymskaja noth’, ‘Roter Stern’, ‘Victor Borge’, ‘Augusta Luise’, ‘Black Magic’, ‘Peace’, ‘Double Delight’, ‘Glorious’, ‘Prima Ballerina’, ‘Lady Rose’, ‘Rose Giardino di Boboli’, ‘Valentino’, ‘Pink Intuition’, ‘Red Star’), 42,8 % of the samples of group of climbing roses (‘New dreams’, ‘Polka Babochka’, ‘Dorothy Perkins’, ‘Devich'ji Grezy’, ‘Krasnyj Majak’, ‘Krymskije Zori’, ‘Polka’, ‘New Dawn’, ‘Rosarium Uetersen’), 20 % of group of english roses (‘Jubilee Celebration’). | ||
| Key words | Sphaerotheca pannosa Lev. var. rosae Woronich, varieties samples, Rosa L., polygenic stability, immunological estimate | ||