Ion uptake and respiration of dry bean roots subjected to localized anoxia

摘要: Ion uptake by dry bean root systems was examined during a three day treatment period. Three aeration treatments were applied to split where both halves aerated, nonaerated and one half aerated the remaining (localized anoxia). absorption similar for control localized anoxia treatments. The absorbed 2, 40, 60 percent of K+, Ca++, NO3−, respectively. stressed plants appeared increase directly with growth in portions Localized resulted greater potassium ion per unit weight respiration rates Pinto III cultivar system. Transpiration Seafarer subjected 135% control. additional water use may have contributed uptake, mass flow, portion treatment. Nutrient solutions controls became more alkaline stress than did treatments, indicating possible direct or indirect effect on corresponding half. Compensation roots be result increased growth, rates, transpiration and, III, an rate weight. This compensatory nutrients system mechanism which overcome within soil profile.