Good Fruit Grower

December 2011

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Page 57 of 79

Mildew resistance QUEST CONTINUES A new generation of powdery mildew resistant cherry selections that might have better fruit quality is sought. by Melissa Hansen W Next year, Nnadozie Oraguzie will begin field testing a new generation of mildew-resistant sweet cherry selections as he works to combine disease resistance with high fruit quality traits. hile there is keen grower interest in development of cherry varieties resistant to powdery mildew, the resulting fruit must have consumer appeal, says Washington State University's cherry breeder Dr. Nnadozie Oraguzie. Oraguzie has been col- lecting field and fruit quality data for sev- eral years on three sweet cherry selections (known as AA, DD, and GG) that are resist- ant to powdery mildew. The selections originated from material developed by for- mer WSU stone fruit breeder Dr. Tom Toyama who retired in the mid-1980s. Although the selections look good in "From a grower standpoint, the selections are good because they have powdery mildew resistance, but the consumer buying cherries terms of mildew resistance, showing no signs of disease even in unsprayed plots at WSU's Irrigated Agriculture Research and Extension Center, Oraguzie has taken a slow approach to commercialization, concerned that fruit quality of the selections was lacking. doesn't know that." —Nnadozie Oraguzie 58 DECEMBER 2011 GOOD FRUIT GROWER courtesy of washington state university

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