| Effect of drought stress on physiological characteristics inflag leaf of different wheat cultivars after anthesis |
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| DOI：10.7606/j.issn.1000-7601.2010.06.29 |
| Key Words: wheat drought stress after anthesis flag leaf physiological characteristics |
| Author Name | Affiliation | | ZHANG Yaqian | Key Laboratory of Dryland Farming and Water Ssarving, Qingdao Agricultural University, Qingdao, Shandong 266109, China | | LIN Qi | Key Laboratory of Dryland Farming and Water Ssarving, Qingdao Agricultural University, Qingdao, Shandong 266109, China | | ZHANG Yumei | Key Laboratory of Dryland Farming and Water Ssarving, Qingdao Agricultural University, Qingdao, Shandong 266109, China | | LI Lingyan | Key Laboratory of Dryland Farming and Water Ssarving, Qingdao Agricultural University, Qingdao, Shandong 266109, China | | LU Yiguo | Key Laboratory of Dryland Farming and Water Ssarving, Qingdao Agricultural University, Qingdao, Shandong 266109, China |
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| Abstract: |
| The effect of drought stress on some physiological characteristics in flag leaf of different wheat cultivars
were studied under the condition of cultivation with rain-proof shelter. The results showed that the water content of
leaves and the soluble protein content, as well as the activity of the protective enzyme system SOD, CAT and POD de-creased under drought stress after anthesis, and the content of MDA produced by lipid peroxidation increased at the same
time, which led to the decrease of yield. Compared with cultivars in irigated field, the water content of leaves and the
soluble protein content in flag leaf of dryland cultivars Qingmai 6 and Lumai 21 were relatively higher and decreased more
slowly, and the decreased amplitude of the activity of SOD, CAT and POD were mild. The content of MDA of dryland
cultivars increased slowly with the development of drought stress and the decreased amplitude of yield and yield compo-nents were small . The water content of leaves and the soluble protein content, the activity of SOD, CAT and POD in flag leaf of Qingmai 6 were higher than those of Lumai 21, while the content of MDA of Qingmai 6 were lower and the yield was higher. These indicated that Qingmai 6 could maintain a relatively superior physiological state under drought stress, and its metabolic function and drought resistance were strong. |
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