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首页> 外文期刊>Acta Horticulturae >Effect of water stress induced at different growth stages on grapevine cv. Chardonnay on production and wine quality.
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Effect of water stress induced at different growth stages on grapevine cv. Chardonnay on production and wine quality.

机译:不同生长阶段诱导的水分胁迫对葡萄简历的影响。霞多丽的产量和葡萄酒品质。

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摘要

Field experiments were conducted during the 1998/99, 1999/2001 and 2000/01 growing seasons in Chile, to evaluate the effects of water stress on yield, wine quality, plant water status and nutritional reserves on roots of grapevines cv. Chardonnay. The treatments comprised: (T1) 100% water evapotranspiration (Etc) all over the season; (T2) 40% Etc all over the season; (T3) no irrigation since bud burst to veraison and irrigation at a 100% of Etc the rest of the season, until harvest; (T4) irrigation of 100% Etc since bud burst to veraison and no irrigation from then on up to harvest. Water shortage significantly decreased shoot growth and berry size resulting to yield reduction. The growing period from bud burst to veraison showed the largest reduction in yield total acidity, global wine quality and phenols measured on the wine did not change with water stress, a different behaviour as compared to red wines. Stem water potential (SWP), measured at noon, of plants under no water stress showed a higher SWP of -0.8 Mpa as compared to those plants under water stress that showed -1.2 Mpa. Finally, the water deficit induced a reduction of carbohydrate reserves of the root system.
机译:在智利的1998 / 99、1999 / 2001和2000/01生长季节进行了田间试验,以评估水分胁迫对葡萄树根系产量,葡萄酒品质,植物水分状况和营养储备的影响。霞多丽这些处理包括:(T1)整个季节内100%的水蒸发蒸腾(Etc); (T2)整个赛季Etc为40%; (T3)自从在整个季节的剩余时间内直到芽收芽到100%的芽苗期进行灌溉和灌溉为止,就没有灌溉; (T4)自芽萌发到发芽以来,一直灌溉100%Etc,此后一直没有灌溉直到收获。缺水会显着降低枝条生长和浆果大小,从而导致单产下降。从芽破裂到变味的整个生长期显示出产量总酸度下降最大,该葡萄酒上测得的全球葡萄酒品质和酚类均不随水分胁迫而变化,这与红葡萄酒相比是不同的行为。与没有水分胁迫时显示-1.2 Mpa的植物相比,没有水分胁迫时在中午测量的干水势(SWP)显示出-0.8 Mpa更高的SWP。最后,缺水导致根系碳水化合物储备减少。

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