Water and Osmotic Potentials of Ethephon-Treated Maize Genotypes Varying in Drought Resistance |
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| Authors: | W P Lu M B Kirkham C E Wassom |
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| Institution: | (1) Evapotranspiration Laboratory, Kansas State University, Manhattan;(2) Kansas 66506 and Department of Agronomy, Kansas State University, 66506 Kansas, Manhattan, U.S.A.;(3) Agronomy Department, Jiangsu Agricultural College, Yangzhou, China |
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| Abstract: | Leaves of drought-resistant and drought-sensitive genotypes of maize (Zea mays L.) were sprayed with ethephon to determine
its effect on water and osmotic potentials. With both sufficient and limited water supplies, ethephon decreased the water
potential, but not the osmotic potential, of the drought-sensitive maize. It had no effect on the water and osmotic potentials
of the drought-resistant maize under either water regime. The results showed that the response of a genotype of maize to ethephon
depends upon its susceptibility to drought. |
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