Modeling the Relationship between Apple Quality Indices and Air Temperature

The future impacts of climate change on the yields staple crops have been widely investigated. However, owing to insufficient data compared that available for and complexity quality determination process, relationship between changes in horticultural has not quantified, potential fruit are well understood. We conducted temperature treatment experiments quantify sensitivity apple air collected indices records through field observations propose a model estimating from temperature. In experiment, ‘Fuji’ trees were placed glass chambers set at constant 17.3–25.6°C 110 days after full bloom (DAFB). fruits harvested 170 DAFB measure indices. results indicated acidity ratings blush, peel ground color, starch disappearance, watercore all significantly lower higher temperatures. these could be linearly approximated. Sugar content firmness clearly affected by addition, experimental orchards Aomori Nagano Prefecture over 50 years (1970–2019) analyzed. mean 60 was similar observed chamber experiment results, no significant difference slope linear regression equation orchards. A developed estimate based accumulating daily amounts calculated temperatures using observations. used assess impact long-term increases