Winter stem xylem pressure in walnut trees: effects of carbohydrates, cooling and freezing.

@article{Amglio2001WinterSX,
  title={Winter stem xylem pressure in walnut trees: effects of carbohydrates, cooling and freezing.},
  author={Thierry Am{\'e}glio and Frank W. Ewers and Herv{\'e} Cochard and M Martignac and Marc Vandame and Christian Bodet and Pierre Cruiziat},
  journal={Tree physiology},
  year={2001},
  volume={21 6},
  pages={387-94}
}
Pressure transducers were attached to twigs of orchard trees and potted trees of walnut (Juglans regia L.) to measure winter stem xylem pressures. Experimental potted trees were partially defoliated in the late summer and early autumn to lower the amount of stored carbohydrates. Potted trees were placed in cooling chambers and subjected to various temperature regimes, including freeze-thaw cycles. Xylem pressures were inversely proportional to the previous 48-h air temperature, but positively… CONTINUE READING