| 摘要: |
| 研究了２８份冬小麦材料对生育后期高温胁迫的不同反应。在田间于籽粒灌浆期用塑料简棚遮盖供试材料４ｄ或通过冬播推迟其开花期达到高温腔迫处理目的，最后根据千粒重计算各基因型的感热指数大小评价其对高温的适应性，结果表明基因型之间存在明显不同。 |
| 关键词: 小麦 感热指数 高温 耐热性 |
| DOI： |
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| 基金项目:国家自然科学基金!39670462 |
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| Studies on the Responses of Winter Wheat Genotypes to High Temperature Stress |
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| Abstract: |
| Differential responses of 28 winter wheat genotypes to high temperature stress during grain filling period were studied. In order to obtain high temperature conditions,genotypes were either sown in autumn but put under plastic shed for four days after anthesis. Their adaptability to high temperature were estimated by dsing a calculated index (S), that could show obvious difference between genotypes. Analysis of correlation indicated that the above-mentioned methods could provide a simple reliable heat tolerance screening techniques in the field. In addition,it was found that the susceptibility indices (S) of genotypes were positively correlated with their grain yield potential per plant or per spike (r=0. 371.,0. 377. ), but some high-yielding genotypes had performed heat-tolerance |
| Key words: wheat,susceptibility index,high teperature stress,heat tolerance |
