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DIFFERING EFFECTS OF WATER DEFICIT ON NET PHOTOSYNTHESIS OF INTACT AND EXCISED SORGHUM LEAVES
Author(s) -
PASTERNAK D.,
WILSON G. L.
Publication year - 1974
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1974.tb01313.x
Subject(s) - photosynthesis , sorghum , biology , botany , sorghum bicolor , c4 photosynthesis , horticulture , agronomy
S ummary Net photosynthesis and leaf resistances in turgid sorghum leaves were compared with those of intact leaves which underwent relatively slow loss of water, and with excised leaves which lost water rapidly. Reduced net photosynthesis in intact leaves can largely be accounted for by stomatal closure; this is not so for excised leaves. Stomata of excised leaves both started and completed closure at much lower leaf water contents than those of attached leaves.