Grupo VIENAP, Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de La Rioja, Universidad de La Rioja), Carretera de Burgos Km. 6, 26007 Logroño, Spain.
Laboratorio de Aromas y Sustancias Naturales, Instituto Nacional de Tecnología Agropecuaria (INTA), San Martín, 3853, 5507 Luján de Cuyo, Mendoza, Argentina.
Food Chem. 2018 Dec 15;269:380-386. doi: 10.1016/j.foodchem.2018.07.019. Epub 2018 Jul 3.
Photosynthetic pigments, including carotenoids are important secondary metabolites, which play a key role in photosynthesis. There is little information about the effects of nitrogen and elicitor applications on chlorophyll and carotenoid concentrations in grapes. The aim of this work was therefore to study the effects of the foliar application of nitrogen sources and elicitors to Tempranillo, Garnacha and Graciano (Vitis vinifera L.) grapevines on chlorophyll and carotenoid contents. The results showed that β-carotene and lutein were the most abundant carotenoids in all the samples, ranging from 1336 and 227 to 7054 and 1382 μg/g, respectively. The applied treatments had greater impact on chlorophyll and carotenoid contents in Tempranillo grapes than in Graciano and Garnacha varieties. The content of chlorophyll was determined by the variety factor, while the concentration of carotenoids was influenced by the interaction of variety and treatment factors, depending on the type of foliar application.
光合色素，包括类胡萝卜素，是重要的次生代谢产物，在光合作用中起着关键作用。氮素和诱导剂应用对葡萄中叶绿素和类胡萝卜素浓度的影响的信息很少。因此，本工作的目的是研究叶面喷施氮源和诱导剂对 Tempranillo、Garnacha 和 Graciano（Vitis vinifera L.）葡萄中叶绿素和类胡萝卜素含量的影响。结果表明，β-胡萝卜素和叶黄素是所有样品中含量最丰富的类胡萝卜素，分别为 1336 和 227 至 7054 和 1382μg/g。与 Graciano 和 Garnacha 品种相比，施加的处理对 Tempranillo 葡萄中的叶绿素和类胡萝卜素含量有更大的影响。叶绿素含量由品种因素决定，而类胡萝卜素浓度则受品种和处理因素的相互作用影响，这取决于叶面喷施的类型。
