Authors: Craig Ledbetter Sherry Peterson Joel Jenner
Publish Date: 2006/05/31
Volume: 148, Issue: 3, Pages: 251-259
Abstract
Central Asian apricot germplasm was used in hybridizations with California adapted apricots to increase Brix levels and improve fresh eating quality Fruit from parental trees the F1 hybrid and two backcross families were evaluated for fruit quality traits and analyzed by HPLC for specific sugar content The F1 hybrid between Central Asian and California adapted apricots was intermediate to its parents in many of the evaluated characteristics and levels of specific sugars When the F1 hybrid was backcrossed to California adapted apricots ‘Lorna’ and ‘Robada’ the resulting hybrids were diverse in Brix juice acidity fruit size and profiles of specific sugars Glucose fructose ratios higher that 33 were encountered in fruit from five of the 22 analyzed seedlings and fructose sorbitol ratio ranged from 067 to 646 Brix and total sugar content correlated significantly with each other and with both sucrose and glucose No significant correlations existed between sorbitol and any of the other analyzed sugars nor with Brix or total sugars The results demonstrated the extent of sugar profile modification possible in California adapted apricots after just two generations of breeding with Central Asian apricot germplasm
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