| 糖分含量作为抗镰刀菌茎腐病玉米品种的育种指标研究 |
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| 引用本文： | 龙书生,李亚玲,张宇宏,马秉元.糖分含量作为抗镰刀菌茎腐病玉米品种的育种指标研究[J].山东农业大学学报(自然科学版),1999,30(4):372-376,380. |
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| 作者姓名： | 龙书生 李亚玲 张宇宏 马秉元 |
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| 作者单位： | 陕西省植物保护研究所,陕西杨陵,712100 |
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| 摘 要： | 玉米茎秆地上第２节髓部组织可溶性糖含量与其对镰刀菌茎腐病的抗性密切相关。在灌泺期抗病品种还原糖含量明显高于感病品种，还原糖含量与植株发病率呈显著的负相关关系；在蜡熟前期，抗病品种的总糖（还原糖和蔗糖）含量明显高于感病品种，总糖含量与植株发病率呈显著的负相关关系。糖分含量的高低可作为抗镰刀菌茎腐病玉米品种的育种指标。
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| 关 键 词： | 还原糖 总糖 镰刀菌茎腐病 抗病育种 |
SUGAR LEVELS AS A BREEDING INDEX OF VARIETY RESISTANT TO CORN STALK ROT |
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| Long Shusheng,Li Yaling,Zhang Yuhong,Ma Bingyuan.SUGAR LEVELS AS A BREEDING INDEX OF VARIETY RESISTANT TO CORN STALK ROT[J].Journal of Shandong Agricultural University,1999,30(4):372-376,380. |
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| Authors: | Long Shusheng Li Yaling Zhang Yuhong Ma Bingyuan |
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| Abstract: | High levels of soluble sugar in the pith of the second corn stalk internode above groundwere closely associated with resistance to corn stalk rot caused by Fusarium. Hybrids resistant tostalk rot had higher reducing sugar levels than susceptible hybrids in filling stage, and incidence ofthe disease took a negative correlation to reducing sugar in this stage. Levels of total sugar(reducingsugar and sucrose) in the pith of hybrids resistant to the disease were higher than that of susceptiblehybrids n pre-waxy-ripe period. Disease incidence showed a negative correlation to total sugar inthis period. Levels of sugar can be regarded as an index of variety resistant to corn stalk rot and canbe use in breeding plants for diseare resistance. |
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| Keywords: | reducing sugar total sugar corn stalk rot caused by Fusarium breeding plants for disease resistance |
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