Deficit irrigation strategies for improving fruit ripening and grape aromatics in Okanagan Valley

改善奥肯娜根山谷水果成熟和葡萄芳香的赤字灌溉策略

• 批准号: 484792-2015
• 负责人: Castellarin, SimoneDiego
• 金额: $ 1.82万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=584536
• 关键词: Deficit; irrigation; strategies; improving; fruit

The Canadian wine industry employs more than 31,000 people in Canada, welcomes more than 3 million tourists each year, and generates close to $6.8 billion in revenue. British Columbia (BC) is one of the two major viticultural regions of Canada. The winery Church and State Wines (CSW) is located in Okanagan Valley and is oriented to the production of premium wines. The Church and State Wines winery manages approximately120 acres of vineyards, all of which are irrigated on a daily basis. Okanagan Valley vineyards require frequent irrigation since limited rainfall during the growing season is not sufficient to sustain optimal grape production at a large-scale. Deficit irrigation strategies - based on reduced irrigation for keeping the vine at a constant moderate stress level - have proven to increase grape and wine quality in red-wine varieties. It is commonly accepted that white grape varieties needs more water; however, the impact of deficit irrigation strategies on grape and wine quality is largely unknown. Terpene compounds are accumulated in the grape berry of several white varieties and determine the aroma of wine. Recent studies indicate that severe water deficit can promote the expression of terpene biosynthesis genes in the grape. Dr. Castellarin and CSW will collaborate in implementing three irrigation regimes in a CSW Viognier vineyard. Dr. Castellarin will investigate the impact of these regimes on the ripening process of grapes and the level of accumulation of terpenes in grapes. Dr. Castellarin group will perform physiological measurements in the vineyard (leaf water potential and leaf gas exchanges) and metabolite analyses in the laboratory (total sugars, organic acids, abscisic acid, and terpenes). This project will identify how irrigation can be managed to promote fruit ripening, optimize the accumulation of terpenes in grapes and, indeed, improve wine quality. This information will benefit the BC grape and wine industry that might adopt new strategies for improving grape and wine quality in the vineyard and reducing the irrigation water usage.

加拿大葡萄酒行业在加拿大拥有超过31，000名员工，欢迎超过300万 每年的游客，并产生近68亿美元的收入。不列颠哥伦比亚省（BC）是两个 加拿大主要的葡萄种植区。酒庄教堂和国家葡萄酒（CSW）位于奥卡诺根 山谷，并以生产优质葡萄酒为导向。 教堂和国家葡萄酒厂管理着大约120英亩的葡萄园，所有这些都是灌溉的。 按日奥卡诺根山谷的葡萄园需要频繁的灌溉，因为降雨量有限， 生长季节不足以维持大规模的最佳葡萄生产。非充分灌溉战略 - 基于减少灌溉保持在一个恒定的适度应力水平的葡萄-已被证明增加 红葡萄酒品种的葡萄和葡萄酒质量。人们普遍认为，白色葡萄品种需要更多的 然而，亏缺灌溉策略对葡萄和葡萄酒质量的影响在很大程度上是未知的。 萜烯化合物在几个白色品种的葡萄浆果中积累，并决定了葡萄的香气。 酒最近的研究表明，严重的水分亏缺可以促进萜烯生物合成基因的表达 在葡萄。 博士Castellarin和CSW将在CSW Viognier合作实施三种灌溉制度 葡萄园Castellarin博士将研究这些制度对葡萄成熟过程的影响， 葡萄中萜烯的积累水平。Castellarin博士小组将在以下地点进行生理测量： 葡萄园（叶水势和叶气体交换）和实验室中的代谢物分析（总 糖、有机酸、脱落酸和萜烯）。该项目将确定如何管理灌溉， 促进果实成熟，优化萜烯在葡萄中的积累，甚至提高葡萄酒的质量。 这些信息将有利于不列颠哥伦比亚省葡萄和葡萄酒行业，可能会采取新的战略，以改善 提高葡萄园的葡萄和葡萄酒质量，减少灌溉用水。