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Effect of temperature on stomatal conductance and ozone injury of pinto bean leaves

Effect of temperature on stomatal conductance and ozone injury of pinto bean leaves

Plant Disease 65(9): 750-751

Phaseolus vulgaris (cv. Pinto 111) unifoliate leaves exposed to 0.1 p.p.m. O3 for 3 h at 15, 24 and 32 deg C developed 25, 3 and 24% foliar injury, respectively. Stomatal conductance of both exposed and unexposed leaves was lowest at 15 deg , intermediate at 24 deg and greatest at 32 deg. Exposure to O3 significantly reduced stomatal diffusion at 32 deg , but not at 24 deg or 15 deg. Factors other than gaseous uptake apparently caused the reduced injury at 24 deg.

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Accession: 000871317

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