| Identification and analysis of drought resistance of different winter wheat cultivars |
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| DOI：10.7606/j.issn.1000-7601.2010.02.04 |
| Key Words: winter wheat drought resistance physiological indices |
| Author Name | Affiliation | | LI Yun | Northwest A & F University, Yangling, Shaanxi 712100, China
Hanzhong Agricultural Science Research Institute, Hanzhong, Shaanxi 723000, China | | LI Weiping | Northwest A & F University, Yangling, Shaanxi 712100, China | | LI Xiufeng | Hanzhong Agricultural Science Research Institute, Hanzhong, Shaanxi 723000, China |
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| Abstract: |
| With dry land and wet land treatments designed, thirteen winter wheat cultivars with different ranks of drought resistance were used as materials, seven physiological indices were monitored at setting stage, jointing stage, flag leaf stage, heading stage, flowering stage, filling stage and milk stage, which were relative leaf water content, chlorophyll content, ability of osmotic adjustment, praline content, MDA content, SOD activity and POD activity. Multiply partial correlations, stepwise regression, path analysis and gray correlative analysis were conducted between different values of various indices and drought index. The results showed that five indices including different values of chlorophyll content at flag leaf stage, ability of osmotic adjustment at jointing stage, different values of praline content at setting stage, different values of MDA content at jointing stage and different values of SOD activity at filling stage influnced significiantly the drought resistance and could be the indices to identify the drought resistance in winter wheat. |
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