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Oscillatory Transpiration and CO 2 Exchange of Citrus Leaves at the CO 2 Compensation Concentration
Author(s) -
BRAVDO BENAMI
Publication year - 1977
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1977.tb01518.x
Subject(s) - transpiration , citrus × sinensis , chemistry , oscillation (cell signaling) , horticulture , orange (colour) , botany , photosynthesis , biology , biochemistry
CO 2 and H 2 O vapor exchange were measured by enclosing citrus ( Citrus sinensis cv. Sour Orange) leaves in a temperature controlled transparent leaf chamber. Introduction of dry air into the closed circuit gas flow caused cyclic oscillation in CO 2 and H 2 O vapor exchange. It is suggested that oscillation in the CO 2 exchange at the CO 2 compensation concentration is due to oscillation in non‐stomatal resistance to CO 2 . Three types of oscillation were observed: 3–6 min (peak to peak) in young leaves, 30 min in mature leaves, and 160 min in old leaves.