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Downward shoot positioning affects water transport in field-grown grapevines

机译:向下的芽定位影响田间葡萄树的水分传输

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摘要

Grape canopies (cv. Nebbiolo) were manipulated to obtan vines with alternativiely upward and down- ward shoots on the same fruit-cane. Downward orien- tation reduced length and total leaf area of the shoot and water flow through the shoot, but did notmodify shoot water potential. Shoot hydraulic conductivity, either evaluated on growing plants or on cut shoot portions, was lower in downward than in upward ori- ented shoots at all positions along the cane.
机译:葡萄冠层(Ceb。Nebbiolo)被操纵成在同一果蔗上交替生长的向上和向下的芽。向下方向减少了枝条的长度和总叶面积,并减少了通过枝条的水流,但没有改变枝条的水势。无论是在生长的植物上还是在切下的枝条上进行评估,枝条的水力传导率在向下的位置均低于在甘蔗上所有位置的向上定向的枝条。

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