Cyclaneusma minus and Dothistroma septosporum (Dorog.) M. Morelet, are both pathogens that cause needle diseases affecting Pinus radiata D. Don in New Zealand. These needle diseases are routinely assessed in breeding trials, however assessment of each disease is often confounded by the presence of the other. This study was aimed at determining the genetic correlation between Dothistroma needle blight and Cyclaneusma needle cast resistance where there was no observable confounding. Genetic correlation found between traits was favourable and strong (-0.78) indicating that selection for higher resistance to needle loss caused by Dothistroma infection will improve the resistance to needle loss caused by Cyclaneusma infection. Keywords: needle retention, heritability, genetic correlation, disease resistance <

Ahmed Ismael

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Electronic Poster Session - Biology - Disease Resistance 3, , 428, 2018
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