| 于晓丹,张蕴薇.39份新麦草种质耐旱性综合评价[J].干旱地区农业研究,2011,29(5):7~12 |
| 39份新麦草种质耐旱性综合评价 |
| Comprehensive evaluation of drought tolerance of 39 strains of Russian wildrye |
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| DOI：10.7606/j.issn.1000-7601.2011.05.02 |
| 中文关键词: 新麦草 耐旱性 种质 生理指标 |
| 英文关键词:Russian wildrye drought tolerance germplasm physiological index |
| 基金项目:科技支撑（2008BAD95B12,2009BADA7B04）牧草产业技术体系项目 |
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| 中文摘要: |
| 39份(1～39号)新麦草种质材料，在同等干旱条件下，22号、3号、4号、6号、10号和11号能够保持较高的相对含水量，35号、38号丙二醛百分含量相对较低，可能具有更完善的保护机制，29号、31号和39号叶片中积累的脯氨酸含量较高，36号、6号、5号和19号可溶性糖含量相对较高，27号、32号和33号叶色值高，叶片中能够维持较高的叶绿素含量，37号、26号、1号和6号超氧化物歧化酶活性较高，有较强的耐旱潜力。根据主成分分析，得到这39份种质材料的耐旱性顺序。根据聚类分析，从这39份种质材料筛选出耐旱性较强的种质材料：1号、6号、26号、27号、32号、30号、31号、34号、39号、22号、5号和37号。 |
| 英文摘要: |
| In 39 Russian wildrye materials, under the same drought level, Samples 22, 3, 4, 6, 10 and 11 maintained higher relative water content under drought resistance. Sample 36, 6, 5 and 19 protected plants from harmful factors by increasing the soluble sugar content. Samples 35 and 38 could control the MDA content in the lower level. Samples 29, 31 and 39 accumulated more proline, therefore, had higher drought resistance. Samples 27, 32 and 33 maintained more chlorophyll because of higher leaf color (SPAD). Samples 37, 26, 1 and 6 had a certain extent of drought resistance ability because of higher SOD activity. With principle component analysis, the germplasms's drought tolerance sequence would be got. With cluster analysis, the stronger drought tolerance germplasms would be selsected from 39 germplasms. They are Samples 1, 6, 26, 27, 32, 30, 31, 34, 39, 22, 5 and 37. |
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