| Comprehensive evaluation of physiological and biochemical indexes and drought resistance of new maize inbred lines during seedling stage |
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| DOI：10.7606/j.issn.1000-7601.2016.05.02 |
| Key Words: maize inbred line drought tolerance index |
| Author Name | Affiliation | | SUN Huan-huan | College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | HAN Zhao-xue | Colege of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | TAN Deng-feng | College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | ZHANG Xiao-yan | College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Seventy-three new maize inbred lines cultivated by our research group and seven known lines were cultivated under simulated drought-stress condition in greenhouse to investigate the relationships between drought tolerance related physiological and resistance and drought. Through testing and analyzing their WLR and RWC, 15 inbred lines were selected. Five physiological and biochemical indexes of these inbred lines were examined including proline content, malondialdehyde (MDA) content, SOD activity, CAT activity, and POD activity. Based on the classification of five physiological and biochemical indexes, drought tolerance of the inbred lines was evaluated. The results indicated that WLR, proline content, MDA content, SOD activity, CAT activity and POD activity were increased, but relative water content became decreased. The comprehensive evaluation on drought tolerance of these lines classified them into high drought tolerance (four lines), drought tolerance (three lines), medium drought tolerance (two lines), drought susceptibleness (three lines), and high drought susceptibleness (three lines). |
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