| 高粱生育后期根系对渍水胁迫的生物学响应 |
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| 引用本文： | 张永清,苗果园. 高粱生育后期根系对渍水胁迫的生物学响应[J]. 山西农业大学学报(自然科学版), 2005, 25(3): 193-195 |
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| 作者姓名： | 张永清 苗果园 |
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| 作者单位： | 1. 山西农业大学,农学院,山西,太谷,030801;山西师范大学,生物技术与工程学院,山西,临汾,041000
2. 山西农业大学,农学院,山西,太谷,030801 |
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| 基金项目： | 山西省自然科学基金项目(991102) |
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| 摘 要： | 为了研究抽穗后渍水逆境对高粱根系及地上部生长发育的影响,在山西农业大学试验农场进行了人工模拟高粱渍水盆栽试验。结果表明:渍水使高粱上位次生根数量有所增加,但长时间(20～30d)渍水会导致高粱根重及根系活力明显降低。短期渍水对根系SOD及POD活性具有激活效应,但随着胁迫时间的延长,转而表现为抑制效应,SOD活性迅速下降,同时根系过氧化产物MDA含量成倍增长,根系衰老加速。
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| 关 键 词： | 高粱根系 渍水胁迫 生物学响应 |
| 文章编号： | 1671-8151(2005)03-0193-03 |
| 修稿时间： | 2004-12-17 |
The Biological Response of Sorghum Root System Under Waterlogging Stress at Later Growth Stages |
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| ZHANG Yong-qing et al.. The Biological Response of Sorghum Root System Under Waterlogging Stress at Later Growth Stages[J]. Journal of Shanxi Agricultural University(Nature Science Edition), 2005, 25(3): 193-195 |
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| Authors: | ZHANG Yong-qing et al. |
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| Abstract: | Effects of waterlogging of soil on sorghum root were studied on the Experimental Farm of Shanxi Agricultural University with pot culture utilizing waterlogging-simulation method at later growth stage. The results indicated that (1)waterlogging soil produced more secondary root of sorghum. However, under long-term (20~30 d) waterlogging stress, the weight and activity of sorghum root decreased significantly. (2)Waterlogging stress stimulated POD and SOD activity, but with the extent of stress, the activity of SOD turned to be restrained, and then, decreased sharply.At the same time, the content of MDA increased significantly. Thereafter, the sorghum root under waterlogging senesced much earlier than those under control. |
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| Keywords: | Sorghum roots Waterlogging stress Biological response |
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