Estimation of scab resistance stability of apple hybrid offsprings after selection on artificial infection background | Оценка стабильности устойчивости к парше гибридных потомств яблони, прошедших отбор на искусственном инфекционном фоне
2013
Vasekha, V.V., 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
In the conditions of the Republic of Belarus there were presented the results of estimation of a field resistance to a scab within five research years of apple (Malus) hybrid fund. This fund has passed the selection for a scab resistance on an artificial infection background of the pathogen V. inaequalis. The results of comparative efficiency use of apple introduced cultivars as initial forms – donors of various monoresistant to the disease genes such as Rvi4, Rvi6, Rvi10 are introduced. In each family there were singled out the genotypes which affect was not exceeded 2 points in the conditions of an annual rigid infection background of the causal organism of a scab. Use of the cultivars Reka (gene Rvi4) and Redkroft (gene Rvi6) in a breeding work appeared to be the most productive. In their hybrid offspring there were singled out 74 and 58 % respectively of high resistant and resistant to the disease genotypes of a new generation possessing scab resistance stable in time.
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