Centre for the Research and Technology of Agro-Environmental and Biological Sciences, CITAB, University of Trás-os-Montes e Alto Douro, Quinta de Prados 5000-801, Vila Real, Portugal; Departament of Biology and Environment, School of Life and Environmental Sciences, University of Trás-os-Montes e Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal.
Centre for the Research and Technology of Agro-Environmental and Biological Sciences, CITAB, University of Trás-os-Montes e Alto Douro, Quinta de Prados 5000-801, Vila Real, Portugal.
Food Chem. 2020 Aug 30;322:126713. doi: 10.1016/j.foodchem.2020.126713. Epub 2020 Mar 30.
Pre-harvest application of exogenous compounds has been employed in many crops, as a cultural practice, to promote their adaptation to a new climate-changing environment. Effect of foliar pre-harvest application of salicylic acid, glycine-betaine complex and seaweed extract (Ascophyllum nodosum) on the cherry quality from 'Staccato' cultivar was studied. Treatments significantly affected (p < 0.01) the fruit size, soluble solids content, pH, colour, polyphenols, vitamin C and antioxidant activity. Glycine-betaine and A. nodosum treated cherries presented higher dimensions, soluble solids content and pH and lower acidity. In addition, these cherries had a higher content of polyphenols and vitamin C and antioxidant capacity, but lower values of L*, C* and hue angle, meaning that both treatments can rise the fruit ripening process. Therefore, the pre-harvest application of glycine-betaine and A. nodosum can be a good alternative to promote the adaptation of sweet cherry tree to stressful environmental conditions, without compromising the fruit quality.
采前外源化合物处理已被广泛应用于许多作物中，作为一种文化实践，以促进其适应新的气候变化环境。本研究探讨了水杨酸、甘氨酸甜菜碱复合和海藻提取物（泡叶藻）采前叶面处理对‘Staccato’品种樱桃品质的影响。处理显著影响（p<0.01）果实大小、可溶性固形物含量、pH 值、色泽、多酚、维生素 C 和抗氧化活性。甘氨酸甜菜碱和泡叶藻处理的樱桃具有更大的尺寸、更高的可溶性固形物含量和 pH 值以及更低的酸度。此外，这些樱桃具有更高的多酚和维生素 C 含量和抗氧化能力，但更低的 L*、C*和色调角值，这意味着这两种处理都可以促进果实的成熟过程。因此，采前甘氨酸甜菜碱和泡叶藻的应用可以作为促进甜樱桃树适应胁迫环境条件的一种良好替代方法，而不会影响果实品质。
