The Influence of Prior Water Stress and Abscisic Acid Foliar Spraying on Stomatal Responses to CO2, IAA, ABA, and Calcium in Leaves of Solanum melongena |
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Authors: | EAMUS, DEREK NARAYAN, ANJEELA D. |
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Abstract: | The influence of a water stress or foliar ABA spraying pretreatmenton stomatal responses to water loss, exogenous ABA, IAA, Ca2+,and CO2 were studied using excised leaves of Solanum melongena.Both pretreatments increased stomatal sensitivity of water loss,in the presence and absence of CO2, but decreased stomatal sensitivityto exogenous ABA. CO2 greatly reduced the effect of exogenouslyapplied ABA. IAA decreased leaf diffusion resistance for controland ABA sprayed leaves, but did not influence the LDR of previouslywater-stressed leaves. CA2+ did not influence LDR of any leavesof any treatments. Key words: Water stress, stomatal response, pretreatments |
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