| Relationship between ecological types of wheat cultivars sown in irrigated and dry fields and their responsive protein at seedling stage under different water stress treatments |
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| DOI：10.7606/j.issn.1000-7601.2011.04.01 |
| Key Words: wheat(Triticum aestivum L) water stress responsive protein ecological type |
| Author Name | Affiliation | | REN Wanjie | College of Agronomy, Northwest A & F University, Yangling Branch of China National Wheat Improvement Centre, Yangling, Shaanxi 712100, China | | FAN Fenggui | College of Agronomy, Northwest A & F University, Yangling Branch of China National Wheat Improvement Centre, Yangling, Shaanxi 712100, China | | LU Qinglin | Wheat Research Institute,Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730020, China | | GAO Zheng | College of Agronomy, Northwest A & F University, Yangling Branch of China National Wheat Improvement Centre, Yangling, Shaanxi 712100, China | | ZHANG Xiaoke | College of Agronomy, Northwest A & F University, Yangling Branch of China National Wheat Improvement Centre, Yangling, Shaanxi 712100, China | | ZHANG Yuyu | College of Agronomy, Northwest A & F University, Yangling Branch of China National Wheat Improvement Centre, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to understand the relationship between expression of responsive protein under different water stress treatments at seedling stage and ecological types of wheat cultivars and advanced lines sown in irrigated, dry or irrigated-dry fields, the seedlings of 150 wheat cultivars and advanced lines with different ecological types were treated with well-watered and -1.0 MPa PEG-6000 treatments for 72 h, respectively. After the SDS-PAGE method was used to detect a 66.2 kDa responsive protein in those cultivars, the relationship between the expression of responsive protein at seeding stage under different water stress treatments and ecological types of those cultivars was analyzed. Cultivars and advanced lines could be divided into three types based on the expression of the responsive protein at seeding stage under different water stress treatments. In all the cultivars and advanced lines，25 of them (16.7%) expressed the responsive protein under both well-watered and -1.0 MPa PEG-6000 treatments, 58 cultivars and advanced lines (38.7%) expressed the responsive protein only under -1.0 MPa PEG 6000 treatment, the other 67 cultivars and advanced lines (44.6%) did not express the protein under the two kinds of water stress treatments. Statistical analysis showed that three expressive types of responsive protein were significantly correlated with three ecological types of cultivars and advanced lines. Those illustrated that the expression of the responsive protein at seedling stage under water stress had a close and positive relationship with the drought resistance of cultivars and advanced lines. Therefore, the expression of the responsive protein could be considered as one of the indexes of drought resistance identification for wheats. |
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