Transpiration und Mineralstoffeinlagerung der Weinbeere

Authors

  • H. Düring
  • F. Oggionni

DOI:

https://doi.org/10.5073/vitis.1986.25.59-66

Keywords:

berry, transpiration, translocation, calcium, magnesium, potassium

Abstract

Transpiration and accumulation of mineral nutrients in grape berries

3 weeks after full bloom clusters of Silvaner vines were treated with a Na2CO3-olive oil-emulsion (E) or with liquid paraffin (P), respectively, in order to promote or delay transpiration of the berries.

  1. Transpiration (μl H2O · cm-2 ·  s-1) of untreated berries decreased by about 80 % during the experiment (30-85 d after full bloom); treatment with E increased, treatment with P decreased transpiration.
  2. The Ca content (mg berry-1) of untreated or P-treated berries increased slowly, while in E-treated berries the Ca accumulation increased rapidly. In E-treated berries the Mg and K contents were increased also, but the differences were less often significant.
  3. P-treated be rries did not significantly differ from untreated berries with respect to their Ca, Mg or K contents.
  4. The Ca accumulation in berries and the transpiration rate of these berries are closely correlated (r = +0.7505).

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Published

2015-12-17

Issue

Vol. 25 No. 2 (1986): VITIS

Section

Article

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