| Study on the relation of soluble sugar, ptotective enzyme and drought resistance in wheat |
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| DOI：10.7606/j.issn.1000-7601.2011.05.17 |
| Key Words: wheat soluble sugar SOD POD DRI |
| Author Name | Affiliation | | WANG Chuan | Northwest A & F University, Yangling, Shaanxi 712100, China | | XIE Huimin | Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Na | Northwest A & F University, Yangling, Shaanxi 712100, China | | WANG Hongli | Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to study the correlation of drough resistance with certain factors under drough-stressed and non-stressed conditions, souble sugar (SS), SOD and POD of 21 winter wheat varieties at seeding stage were measured, and the grain yield and drought resistance index (DRI) were amalysed as target traits. The results showed that there were great differences in SS, SOD and POD in different cultiva
rs under each treatment; The content of SS, SOD and POD of the most high-yield and drough-resistant wheat varieties reaches 41.68 mg/g, 496.3 U/(g·min FW) and 169.73 U/(g·min FW) or even more. The analysis of relativity indicated that SS, SOD and POD were highly correlated with DRI, the correlation ranked as rSS>rPOD>rSOD; The pathway indicated that SS played an important role in the yield and DRI under drought stress; The coefficient of
effects was 0.5584 and 0.5264; The SS, SOD and POD played positive direction effect on yield and DRI under drought-stressed conditions. In conclusion, they can be used as indicators to identify drought-resistant varieties. |
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