Mapping Resistance Genes in Red Raspberry
Author Information
Author(s): Sargent Daniel J, Fernández-Fernández Felicidad, Rys Alicja, Knight Victoria H, Simpson David W, Tobutt Kenneth R
Primary Institution: East Malling Research (EMR)
Hypothesis
Can we map the genes responsible for resistance to the aphid Amphorophora idaei and dwarfing habit in red raspberry?
Conclusion
The mapping of the A1 gene will help in developing raspberry cultivars with better pest resistance and understanding the genetics of dwarfing habit.
Supporting Evidence
- The study produced a genetic linkage map covering 505 cM with seven linkage groups.
- The A1 gene was mapped to linkage group 3, and the dw gene to linkage group 6.
- The average linkage group length was 72.2 cM with an average of 17 markers per group.
Takeaway
Scientists studied raspberry plants to find out where the genes for pest resistance and dwarf growth are located, which can help make better raspberry plants.
Methodology
An F1 cross was made between two raspberry cultivars, and seedlings were screened for resistance to aphids and genotyped with molecular markers.
Limitations
The study is limited by the inability to determine the exact number of resistance genes in resistant selections due to complex pedigrees.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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