The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Saturday, December 17, 2005 - 2:55 PM
0867

Prospects for conventional breeding of strawberries for tolerance to root weevils

Richard Cowles, Richard.cowles@po.state.ct.us, The CT Ag Experiment Station, 153 Cook Hill Rd, PO Box 248, Windsor, CT

Considerable variability exists among commercial octaploid strawberry cultivars regarding their susceptibility to damage from root weevils. Although the suitability of root systems for development of root weevil larvae does not appear to differ among 21 tested cultivars, several foliar traits influenced consumption of foliage by root weevil adults. This variation is accidental, as there have not previously been breeding programs to improve root weevil tolerance. Therefore, directional selection using elite commercial varieties as parents of new hybrids may further improve strawberries without having to search for resistance genes in the ancestral diploid ancestors. Simultaneous improvement of tolerance to black root rot pathogens will also be important for improving root weevil tolerance, because root diseases greatly increase the susceptibility of strawberry plants to injury by reducing the root biomass.


Species 1: Coleoptera Curculionidae Otiorhynchus sulcatus (black vine weevil)
Keywords: behavior

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