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The growth and yield of six cultivars of greenhouse and field tomato in use in North America or the United Kingdom were assessed in growth chambers at four temperatures and compared with growth and yi...eld in an unheated plastic-covered structure. The growth chambers were operated at day/night temperature regimes of 23/17, 23/8, 36/17, and 36/8℃. Differences among cultivars were greatest at 23/8℃ day/night temperature. The U.K. cultivar Alfresco was the highest yielding cultivar at 23/8℃. In the unheated protected structure the cultivars Alfresco and Sigmabush, another U.K. cultivar, yielded the most high quality fruits. Leaf rolling, truss abortion, and deformed fruit occurred in most cultivars at the 36℃ day temperature in the growth chambers. Leaf rolling, blotchy ripening, greenback and fruit cracking occurred in most cultivars in the unheated protected structure. The growth chamber and unheated protected structure identified similar differences among cultivars.show more
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Export Mendeley
KJ00004506741