| 李相文，李建民，段留生，李召虎.冠菌素诱导冬小麦幼苗抗旱性的初步研究[J].麦类作物学报,2010,30(4):676 |
| 冠菌素诱导冬小麦幼苗抗旱性的初步研究 |
| Primary Study on Inducing Effect of Coronatine on Drought Tolerance of Winter Wheat Seedlings |
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| DOI：10.7606/j.issn.1009-1041.2010.04.017 |
| 中文关键词: 小麦 冠菌素 相对含水量 抗旱性 根系 |
| 英文关键词:Wheat Coronatine Relative water content Drought tolerance Roots |
| 基金项目:国家“863”计划项目（2006AA10A213）；国家公益性行业（农业）科研专项（200903007）。 |
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| 中文摘要: |
| 为研究不同冠菌素浓度对冬小麦抗旱性的诱导效应，以两个冬小麦品种为材料，研究了不同浓度冠菌素对20% PEG 6000模拟干旱条件下幼苗生长及其抗旱性指标的影响。结果表明，无论是抗旱性品种长武134还是水分敏感型品种陕253均表现相同的趋势，即：0.01 μmol·L-1和0.1 μmol·L-1的冠菌素预处理有利于幼苗叶片维持相对含水量，提高可溶性糖、脯氨酸和可溶性蛋白含量；对增加幼苗干重和根系长度、提高根冠比、扩大根表面积、特别是提高根系活力有显著效应。由此说明，冠菌素能诱导小麦幼苗提高抗旱能力。 |
| 英文摘要: |
| In order to select suitably concentration of coronatine for winter wheat seedling to resist drought stress, two winter wheat cultivars were employed to study the effect of different concentration coronatine on seedlings growth and indices related to drought tolerance under 20% PEG 6000 simulated drought stress. The results showed that Changwu 134 (drought tolerant) and Shaan 253 (drought sensitive) followed the same trend: after raised in a solution containing coronatine 0.01 μmol·L-1, and 0.1 μmol·L-1 the relative water content, soluble sugar, proline and soluble protein were significantly enhanced and the two concentration coronatine remarkably increased the dry weight , roots length, root: shoot ratio, surface area of root and root activity. Therefore, we considered coronatine could induce the drought tolerance of winter wheat seedlings. |
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