ISHS Acta Horticulturae 538: Eucarpia symposium on Fruit Breeding and Genetics
EFFICIENCY OF MARKER ASSISTED SELECTION (MAS) FOR THE Vf SCAB RESISTANCE GENE |
| Authors: | S. Tartarini, S. Sansavini, B. Vinatzer, F. Gennari, C. Domizi |
| Keywords: | Malus, apple, molecular markers |
| Abstract:
Apple cultivars can exhibit different levels of resistance or susceptibility to scab in the greenhouse and field. Devising a more reliable method for screening resistant and/or tolerant seedlings in breeding programmes is thus an important step in selecting genotypes and developing resistant cultivars. The analytical data from inoculum-based trials in greenhouse and field conditions were compared to the results of marker-assisted selection (MAS) to determine the extent of any mis-classification. The findings underscore that both greenhouse and field assays are needed for more accurate evaluation and that MAS makes selection procedures more efficient, i.e. some of the plants (about 5%) showing resistance in the greenhouse are susceptible in the field. In addition, it was found that MAS-identified homozygous Vf plants are more resistant than heterozygous ones. | |
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