Epicuticular Wax and Cuticular Resistance in Rice

摘要: High leaf cuticular resistance has been reported as a component adaptation of plants to drought prone regions, Experiments were conducted evaluate and characterize the role epicuticular wax water vapor loss from rice (Oryza sativa L.) leaves. This information is necessary determine applicability including higher in an upland breeding program potential selection methods. Diffusion porometry, electron microscopy, gas liquid chromatography employed. Measurement by diffusive porometry after stomatal closure exposure leaves pure CO2 for 15 min was found sufficient induce complete regardless light level, superior dark acclimation this purpose. Removal chloroform dip significantly reduced resistance. Stressed observed increase resistance, illustrating responsive nature characteristic. Gas (GLC) proved be expedient method characterizing both quantitative qualitative differences cullivars. The GLC techniques may useful selecting parents, spot checking pedigree program, or lines reaching yield testing stage, but ate not well suited lor mass screening early generation progeny. Significant two cultivurs, ‘63–83′, adapted West Africa, “IR20′, bred selected submerged paddy culture ihc Philippines, tlie above methods wax. These results are ecological significance plant breeders.