Gas Exchange, Stomatal Behavior, and δ13C Values of the flacca Tomato Mutant in Relation to Abscisic Acid
作者： Kent J. Bradford , Thomas D. Sharkey , Graham D. Farquhar
DOI: 10.1104/PP.72.1.245
关键词: Conductance 、 Lycopersicon 、 Mutant 、 Botany 、 δ13C 、 Chemistry 、 Abscisic acid 、 Vapor pressure 、 Stomatal conductance 、 Plant science 、 Genetics 、 Physiology
摘要: The relationship between stomatal conductance and capacity for assimilation was investigated in flacca , a mutant of tomato ( Lycopersicon esculentum Mill.) that has abnormal behavior low abscisic acid (ABA) content. capacity, determined by measuring rate as function intercellular CO 2 pressure, did not differ leaves its parent variety, Rheinlands Ruhm (RR). On the other hand, greater than RR, could be phenotypically reverted spraying with 30 micromolar ABA. Stomatal also reduced increasing leaf to air vapor pressure difference, decreasing quantum flux, irrespective ABA treatment. high resulted pressure. This allowed discrimination against 13 evidenced more negative δ C values compared RR. both RR plants influenced treatment were consistent predictions based on gas exchange measurements, using recent model discrimination.
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