| Drought resistance of transgenic wheat with TaEBP gene under different water stress during jointing stage |
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| DOI：10.7606/j.issn.1000-7601.2011.04.05 |
| Key Words: water stress TaEBP transgenic wheat physiological and biochemical indexes drought-resistance |
| Author Name | Affiliation | | NAN Bingdong | College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China | | CHEN Yaofeng | College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China | | MIN Donghong | College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Xiaohong | College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHAO Jielan | College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China | | XUE Feiyang | College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Using two transgenic wheat strains with TaEBP gene and corresponding recurrent parent as materials, a pot experiment was conducted under different water stress to compare drought-resistance of different varieties by studying the effect of physiological and biochemical indexes on drought resistance of transgenic wheat during jointing stage, and then to make a comprehensive evaluation of drought-resistance with subordination function method. The results showed that with the increase of water stress, leaf relative water content, chlorophyll content, photosynthetic rate and stomatal conductance showed downtrend, and the transgenic wheat declined more slowly; while intercellular CO2, MDA content, plasma membrane permeability showed uptrend, but the corresponding contrast rose more steeply. The proline content of transgenic wheat was significantly higher than contrast varieties. Based on the comprehensive evaluation we found that transgenic wheat strains G221 and G258 with TaEBP gene have higher drought-resistant capability than the corresponding contrast ones XN979 and HG35． |
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