The objective of the study was to determine the physiological mechanisms of plants in response to brassinolide（BR） alleviating cold water stress on rice. In this study, physiological responses of rice to exogenous BR and cold water submergence were investigated using the chilling-tolerant cultivar Kongyu 131（KY131） and the chilling-sensitive cultivar Kenjiandao 6（KJD6）. A total of 2 mg L^–1 BR increased activities of superoxide dismutase（SOD） and peroxidase（POD） and the contents of sol...

【文章頁數(shù)】：13 頁

【文章目錄】：
1. Introduction
2. Materials and methods
    2.1. Experimental site and conditions
    2.2. Rice materials and plant growth regulator
    2.3. Experimental design and treatments
    2.4. Sample collection and determination of physio-logical parameters
    2.5. Formula calculations
    2.6. Statistical analysis
3. Results
    3.1. Effects of BR on yield and yield components at the booting stage
    3.2. Effects of BR on dry matter production of rice at the booting stage
    3.3. Antioxidant enzyme activity was enhanced by BR
    3.4. The contents of soluble sugar,soluble protein,and chlorophyll were raised by BR treatment
    3.5. The contents of N,P,and K were raised by BR
    3.6. Correlations between traits
4. Discussion
    4.1. BR increased activities antioxidant enzymeactivity and decreased the MDA content under cold water stress
    4.2. BR increased the contents of soluble sugar and soluble protein under cold water stress
    4.3. BR increased the chlorophyll content under cold water stress
    4.4. BR increased the contents of N,P,and K under cold water stress
    4.5. Rice yield and yield components were increased by BR under cold water stress
    4.6. The dry matter production were raised by BR after the heading stage under cold water stress
5. Conclusion



本文編號(hào)：4053989