| Analysis of drought resistance of some wheat materials in Shandong Province |
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| DOI：10.7606/j.issn.1000-7601.2017.05.30 |
| Key Words: wheat drought stress drought resistance germination stage seedling stage middle and late stage |
| Author Name | Affiliation | | DING Xiao-wen | College of Agronomy and Plant Protection, Qingdao Agricultural University, Shandong Provincal Key Laboratory of Dryland Farming Techniques, Qingdao, Shandong 266109, China | | CHANG Le | College of Agronomy and Plant Protection, Qingdao Agricultural University, Shandong Provincal Key Laboratory of Dryland Farming Techniques, Qingdao, Shandong 266109, China | | MU Ping | College of Agronomy and Plant Protection, Qingdao Agricultural University, Shandong Provincal Key Laboratory of Dryland Farming Techniques, Qingdao, Shandong 266109, China |
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| Abstract: |
| Through the use of PEG-6000 simulated drought stress, 21 shangdong wheat varieties were used as experimental materials to study the effects of different strains on the growth and development of winter wheat. Germination rate, coleoptile length, main root length, root number, were as the experimental indexes to compare different varieties drought-resistance characteristics of winter wheat. In seedling stage seedling drought repeatedly appraisal method was used to compare drought-resistant characteristics of winter wheat under water stress. In middle and late stages through use of the artificial water control dry shed simulated drought stress, during flowering period and filling period the first internode below the plant height, spike length, leaf relative water content, leaf POD activity, the output of maturity indicators as the experimental indexes to analysis different strains of winter wheat drought-resistant characteristics under water stress. The results showed that:11, 17, 12, 4, 6, 15, 14 strains drought resistance during the whole growing period was strong; 13 strain was susceptible to drought during the whole growth period; 20, 9, 2, 19, 18 strains drought resistance was strong during germination and seedling stages; 10, 5 strains drought resistance was strong during germination and middle and late stages; strain 7, 1, 8 strains drought resistance was strong during seedling stage; 16, 3 strains drought resistance was strong during the seedling and middle and late stages. The comprehensive drought resistance coefficient of seed germination period of 21 wheat varieties, comprehensive drought resistance coefficient at seedling stage and comprehensive drought resistance coefficient in late stage were analyzed. The results showed that the growth period of wheat drought resistance was not always strong at each stage , seedling stage of middle and late periods were of the highest correlation coefficient of 0.465. |
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