| Comprehensive evaluation on draught resistance of 19 maize inbred lines by EMS mutagenesis |
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| DOI：10.7606/j.issn.1000-7601.2016.02.25 |
| Key Words: maize mutant lines by EMS drought-resistance fuzzy subordination method comprehensive evaluation |
| Author Name | Affiliation | | TAN Yi-chuan | College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, China | | KE Yong-pei | College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
Sichuan Nongda Zhenghong Bio Co., Ltd., Chengdu, Sichuan 610213, China | | HE Xue-ping | Sichuan Nongda Zhenghong Bio Co., Ltd., Chengdu, Sichuan 610213, China | | YU Xue-jie | College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, China | | XU Min | College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, China | | SHI Hai-chun | College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
Sichuan Nongda Zhenghong Bio Co., Ltd., Chengdu, Sichuan 610213, China |
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| Abstract: |
| In this study, 19 maize mutant lines of M4 generation were obtained through the treatment of EMS. Employing indoor simulation system for drought stress with 20% PEG-6000, five physiological traits in draught resistance including relative germination rate, soluble sugar stress index, water loss rate of cutting leaves, relative tall and MDA stress indexes were used to evaluate the comprehensive draught resistance through fuzzy subordination method. Four mutant lines with high drought resistance, R08Y1427, K305Y1413, R08Y1421 and K305Y1403, were screened for maize breeding of drought-resistance. Additionally, the comprehensive analysis indicated that the drought resistance of maize inbred lines could be improved by EMS chemical mutagenesis. |
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