Abstract:

The plant drought-resistant physiology breeding, its essence is applies the plant-physiology principle and the method in the drought-resistant breeding. Plant's under arid coercion physiological metabolism change always is the drought-resistant physiology research hot spot. Plant the shape characteristic and the physiological characteristic as well as the physiological change mechanism which forms for a long time for the adaptation and the resistance arid environment is a complex system. This article through the induction and the summary which progresses to the part drought-resistant physiology biochemistry research, proposed plant's under arid coercion main physiological reaction and the biochemistry change target from three aspects. (1) The maintenance moisture content metabolism 3 physiological essential factor, namely blowhole resistance, root system vigor and photosynthesis speed. (2) The maintains in vivo cell water content the seepage adjustment material proline accumulation tendency. (3) The maintenance adult plant in vivo active oxygen ion metabolism is balanced, defends the active oxygen to accumulate, protects the cell not 3 protection enzyme active change which injures. And through the comparative analysis, summarizes under the arid coercion the plant in the above three physiological biochemistry aspect response and the change rule. Thus for the drought-resistant idioplasm appraisal, screening and the drought-resistant physiology breeding provides the reference.