Gas exchange during a soil drying cycle in seedlings of four black walnut (Juglans nigra L.) families.

@article{Parker1991GasED,
  title={Gas exchange during a soil drying cycle in seedlings of four black walnut (Juglans nigra L.) families.},
  author={William Charles Parker and Stephen Pallardy},
  journal={Tree physiology},
  year={1991},
  volume={9 3},
  pages={
          339-48
        }
}
Photosynthetic and stomatal responses to a soil drying cycle were examined in half-sib seedlings of four walnut (Juglans nigra L.) families. Well-watered seedlings of an Iowa seed source had significantly higher rates of net photosynthesis than seedlings from New York or Michigan sources. This superior photosynthetic potential was associated with both greater stomatal conductance and mesophyll capacity for CO(2) fixation. In a drying soil, net photosynthesis and leaf conductance to water vapor… CONTINUE READING
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