Repeated Mechanical Stress from Leaf Cuvette Influences Leaf Gas Exchange
نویسندگان
چکیده
منابع مشابه
Reduction of molecular gas diffusion through gaskets in leaf gas exchange cuvettes by leaf-mediated pores.
There is an ongoing debate on how to correct leaf gas exchange measurements for the unavoidable diffusion leakage that occurs when measurements are done in non-ambient CO2 concentrations. In this study, we present a theory on how the CO2 diffusion gradient over the gasket is affected by leaf-mediated pores (LMP) and how LMP reduce diffusive exchange across the gaskets. Recent discussions have s...
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The two main resistances in the exchange of gases between plants and the atmosphere are stomatal and boundary layer resistances. We modeled boundary layer dynamics over glabrous and pubescent leaves (assuming non-exchanging trichomes) with leaf lengths varying from 0.01 to 0.2 m, and windspeeds of 0.1-5.0 m x s(-1). Results from theoretical and semi-empirical formulae were compared. As expected...
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Mechanical harvesting of citrus trees can cause physical injuries, such as shedding of leaves, exposing roots, and scuffi ng bark. Although mechanical harvesting usually has not reduced yield, physiological consequences to the tree from these visible injuries have not been investigated. We hypothesized that physical injuries to tree canopies and root systems from a properly operated trunk shake...
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Steady-state leaf gas-exchange parameters and leaf hydraulic conductance were measured on 10 vascular plant species, grown under high light and well-watered conditions, in order to test for evidence of a departure from hydraulic homeostasis within leaves as hydraulic conductance varied across species. The plants ranged from herbaceous crop plants to mature forest trees. Across species, under st...
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ژورنال
عنوان ژورنال: HortScience
سال: 1992
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.27.5.432