Оценка устойчивости к мучнистой росе потомков сортов Otava и Pinova в селекционном питомнике яблони | Estimation of resistance to powdery mildew of 'Otava' and 'Pinova' descendants in apple breeding nursery
2012
Kozlovskaya, Z.A., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Fruit Growing | Gashenko, T.A., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Fruit Growing | Vasekha, V.V., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Fruit Growing
In the conditions of the Republic of Belarus there were presented study results of 'Pinova' and 'Otava' apple (Malus) cultivars efficiency use as sources of resistance to powdery mildew. The hybridological analysis showed the most promising cross combinations. The output of highly resistant and resistant to powdery mildew apple seedlings were obtained: 'Pinova' x 2003-8/35 – 98 %, 'Pinova' x 2000-7/24 – 100 %, 'Otava' x 2004-61/47 – 90 %, 'Pinova' x 2003-9/42 – 100 %. The character of inheritance by descendants varied from intermediate to negative over dominance of the studied sign. There was indicated predomination in the hybrid populations of seedlings with bigger (10-86 %) resistance to the pathogen P. leucotricha, than in parent components. As the result the donor properties of 'Pinova' and 'Otava' cultivars in breeding for resistance to powdery mildew were confirmed.
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