The effect of exogenous abscisic acid on stomatal development, stomatal mechanics, and leaf exchange gas in Tradescantia virginia
Gas exchange parameters and stomatal physical properties were measured in Tradescantia virginiana plants grown under well-watered conditions and treated daily with either distilled water (control) or 3.0 mM abscisic acid (ABA). Photosynthetic capacity (CO2 assimilation rate for any given leaf intercellular CO2 concentration [ci]) and relative stomatal sensitivity to leaf-to-air vapor-pressure difference were unaffected by the ABA treatment. However, at an ambient CO2 concentration (ca) of 350...[Show more]
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