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Seasonal variations in stomatal resistance in cotton

✍ Scribed by J.P. Evenson; C.W. Rose

Publisher
Elsevier Science
Year
1976
Weight
298 KB
Volume
17
Category
Article
ISSN
0002-1571

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✦ Synopsis

This paper reports marked seasonal variations in the stomatal resistance, not attributable to closure associated with water stress, in freshly irrigated cotton leaves. Viscous resistance measurements taken in the field were combined with data on stomatal anatomy to infer seasonal changes in diffusive resistance and to determine the factors of leaf and stomatal anatomy responsible for these seasonal variations. Increases in diffusive resistance were found to be almost equally influenced by smaller stomatal densities and narrower slit width of stomata. Since seasonal trends in resistance were coherent between years this information can be used in interpreting effects of water stress.

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