Dipartimento di Agricoltura, Alimentazione e Ambiente (Di3A), University of Catania, via Valdisavoia, 5, 95123 Catania, Italy.
Department of Beverage Research, Chair Analysis and Technology of Plant-based Foods, Geisenheim University, Von-Lade-Strasse 1, 65366 Geisenheim, Germany.
Food Res Int. 2022 Jul;157:111218. doi: 10.1016/j.foodres.2022.111218. Epub 2022 Apr 5.
A greenhouse experiment was conducted to study the effects of the application of a plant-derived biostimulant (Bioup® TF) on fruit quality and composition of two clusters (cluster II and cluster VI) of the cherry tomato cultivars 'Eletta', 'Kaucana', and 'Top Stellina'. The biostimulant application promoted fruit yield by 12% (up to 1.3 kg m in 'Kaucana') and increased the concentrations of important functional constituents like phytoene, γ-tocopherol and β-tocopherol by up to 16, 25, and 23%, respectively. Fruits from late-ripe cluster VI showed higher fruit weights, D-fructose, and total sugar contents than those from early-ripe cluster II (by 15, 7 and 5%, respectively), but reduced concentrations of acyclic carotenoids (phytoene and lycopene) and tocochromanols (mainly γ-tocopherol, -44%). 'Top Stellina' showed the highest responsiveness to the biostimulant, as particularly (all-E)-β-carotene, phytofluene, and γ-tocopherol concentrations increased, indicating a genotype-dependent effect of the treatment. However, fruits of all treated genotypes showed a contextual decrease in D-fructose and total sugars in response to the biostimulant (on average by 7 and 10%, respectively), indicating a metabolic load burdening the accumulation of lipophilic antioxidants in cherry tomatoes at the expense of their taste-related C pool.
一项温室实验研究了应用植物源生物刺激素（Bioup® TF）对樱桃番茄品种‘Eletta’、‘Kaucana’和‘Top Stellina’的两个果簇（果簇 II 和果簇 VI）的果实品质和成分的影响。生物刺激素的应用使果实产量增加了 12%（在‘Kaucana’中达到 1.3 公斤/株），并使重要功能成分的浓度增加了 16%、25%和 23%，分别为番茄红素、γ-生育酚和β-生育酚。晚熟的果簇 VI 的果实比早熟的果簇 II 的果实具有更高的果实重量、D-果糖和总糖含量（分别高 15%、7%和 5%），但非环类胡萝卜素（番茄红素和游离番茄红素）和生育三烯酚（主要是γ-生育酚，-44%）的浓度降低。‘Top Stellina’对生物刺激素的反应最高，特别是（全-E）-β-胡萝卜素、叶黄质和γ-生育酚的浓度增加，表明处理存在基因型依赖性。然而，所有处理基因型的果实都表现出对生物刺激素的 D-果糖和总糖含量的上下文下降（平均分别下降 7%和 10%），表明代谢负担以牺牲果实的口感 C 库为代价，影响了亲脂性抗氧化剂在樱桃番茄中的积累。
