Volume 56 Number 2 Article 16
Year 2002 Month 4
Title: Quality Characteristics of Five Disease-Resistant Apple Cultivars
Authors: A.A. Bushway, W. Hu, J.R. Schupp, T. Work and S.I. Koller
Abstract:
The integration of disease-resistant cultivars (DRCs) into commercial apple production offers a realistic approach for reducing pesticide use in fruit production.
Appearance and flavor are key attributes
determining whether consumers will accept new cultivars.
Five DRCs, 'NY74828-12', 'NY75414-1',
'NY65707-19', liberty', and 'McShay', were tested at harvest over two seasons (1994,1995). In 1994,
chemical and physical characteristics of five cultivars were significantly (P ^ 0.05) different except glucose, total sugar content, and Hunter Land b values.
Sensory scores were significantly different in firmness, sweetness and tartness.
Cultivar '707' was more preferred in appearance but no significant (P ≤0.05) difference was found in flavor and overall acceptance.
In 1995, cultivar '414' had lower titratable
acidity, Hunter L, a, b values, hue angle and chroma.
Cultivar '707' had significantly higher peak force
both peeled and unpeeled.
Sensory scores were significantly different in firmness.
Cultivar '414' had
higher preference scores in both flavor and overall acceptance while appearance was equally preferred
for all five cultivars.
Correlations indicated that apple flavor was highly correlated with percent soluble
solids content in 1994 (r=0.882), and total sugar content in 1995 (r=0.904). Flavor was also highly
correlated with overall acceptance in both 1994 (r=0.895) and 1995 (r=0.991).
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