Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.
Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing, China.
J Sci Food Agric. 2020 Jul;100(9):3729-3740. doi: 10.1002/jsfa.10412. Epub 2020 May 14.
Gibberellic acid (GA ), a plant-growth regulator, is often used to obtain enlarged table grape berries and induce seedlessness in them. However, the effects of GA on rachis elongation and bunch compactness have seldom been reported in wine-grape production. We assessed the effects of GA spraying on wine-grape inflorescences and bunches and their practical implications for viticulture in the Jiaodong Peninsula, China.
Various GA concentrations were sprayed on field-grown Vitis vinifera L. 'Cabernet Franc' (CF) and 'Cabernet Sauvignon' (CS) grapevines before anthesis in the Jiaodong Peninsula, China, in 2015 and 2016. Inflorescence length during berry development was measured, and flavonoids and aroma compounds in the fruit were detected by high-performance liquid chromatography - mass spectrometry (HPLC-MS) and gas chromatography - mass spectrometry (GC-MS), respectively. For both cultivars, 50 and 100 mg L GA caused significant elongation of the rachis, whereas there was no significant effect on inflorescence growth and berry seed number. Anthocyanin, flavonol, and flavan-3-ol levels in mature berries were not significantly influenced by GA spraying, whereas C -norisoprenoids were modified.
The application of 50-100 mg L GA prior to grapevine anthesis caused elongation of inflorescences and bunches, and eased cluster compactness in CF and CS, and no negative effects were observed on the yield and seed numbers. The concentration and composition of flavonoids and most aroma compounds were not influenced, except that the norisoprenoids were increased by 50 mg L GA applications. © 2020 Society of Chemical Industry.
赤霉素（GA）是一种植物生长调节剂，常用于使酿酒葡萄浆果增大并诱导无核化。然而，GA 对葡萄果穗梗伸长和果穗紧凑度的影响在酿酒葡萄生产中鲜有报道。我们评估了 GA 喷施对酿酒葡萄花序和果穗的影响，以及其对中国胶东半岛葡萄栽培的实际意义。
2015 年和 2016 年，在中国胶东半岛，在葡萄开花前，用不同浓度的 GA 喷施田间生长的 Vitis vinifera L.‘赤霞珠’（CS）和‘品丽珠’（CF）葡萄。测量浆果发育过程中的花序长度，并通过高效液相色谱-质谱联用（HPLC-MS）和气相色谱-质谱联用（GC-MS）分别检测果实中的类黄酮和香气化合物。对于这两个品种，50 和 100 mg L GA 均导致果穗梗显著伸长，而对花序生长和浆果种子数没有显著影响。GA 喷施对成熟浆果中花色苷、类黄酮和黄烷-3-醇水平没有显著影响，但 C-异戊二烯类化合物发生了改变。
在葡萄开花前应用 50-100 mg L GA 可使花序和果穗伸长，并缓解 CF 和 CS 的果穗紧凑度，对产量和种子数没有负面影响。类黄酮和大多数香气化合物的浓度和组成没有受到影响，除了 50 mg L GA 处理增加了异戊二烯类化合物。© 2020 英国化学学会。
