黄淮海麦区小麦耐热性分析及其鉴定指标的筛选
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李敏,苏慧,李阳阳,李金鹏,李金才,朱玉磊,宋有洪
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Analysis of Heat Tolerance of Wheat with Different Genotypes and Screening of Identification Indexes in Huang-Huai-Hai Region
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LI Min,SU Hui,LI YangYang,LI JinPeng,LI JinCai,ZHU YuLei,SONG YouHong
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表1 灌浆期高温处理对小麦主要性状的影响
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Table 1 Effect of high temperature stress on main traits at grain-filling stages
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性状
Trait | 对照均值±标准差
Control mean±SD | 高温处理后的平均值±标准差
Mean±SD after HT stress | 变幅
Range (%) | | 冠层温度Canopy temperature (℃) | 29.08±0.65b | 29.98±1.26a | 3.09 | | 叶绿素相对含量SPAD | 24.37±9.56a | 21.80±7.68b | -10.55 | | 丙二醛含量MDA content (μmol·g-1) | 37.21±8.59b | 42.82±9.89a | 15.09 | | 超氧化物歧化酶活性SOD activity (U·g-1·FW) | 166.89±8.23a | 142.09±13.68b | -14.86 | | 过氧化物酶活性POD activity (μ·g-1·min-1) | 147.63±18.94a | 135.53±16.24b | -8.19 | | 过氧化氢酶活性CAT activity (μ·g-1·min-1) | 26.53±9.05a | 22.58±7.37b | -14.89 | | 单穗粒重Seed weight per plant (g) | 1.75±0.16a | 1.70±0.16b | -2.83 | | 千粒重Thousand-grain weight (g) | 50.88±3.28a | 48.45±2.97b | -4.76 | | 产量Yield (kg·hm-2) | 9331.64±645.20a | 8784.26±726.29b | -5.87 |
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