Wang Wei Cao Minjian Wang Xiaoguang Li Zhi.EFFECTS OF LOW POTASSIUM STRESS ON PROTECTIVE SYSTEMS OF DIFFERENTK- NUTRIENT EFFECTIVE SOYBEAN VARIETIES[J].Soybean Science,2005,24(02):101-105.[doi:10.11861/j.issn.1000-9841.2005.02.0101]
低钾胁迫对不同钾营养效应型大豆保护酶系统的影响*
- Title:
- EFFECTS OF LOW POTASSIUM STRESS ON PROTECTIVE SYSTEMS OF DIFFERENTK- NUTRIENT EFFECTIVE SOYBEAN VARIETIES
- Keywords:
- Low potassium stress ; Soybean; Protective enzyme system. 6"; "Tie 95068 - 5"; "GD1617") at the whole developmental stages in pods. The result shows
- 文献标志码:
- A
- 摘要:
- 以四种钾营养效应型大豆品种(系)(铁丰 31 号 、沈农 6 号 、铁 95068 - 5、GD1617)为试验材料,设置两个钾浓度处理 ,研究低钾胁迫对大豆整个生育期细胞保护酶系统的影响。结果表明 :在低钾胁迫下 ,超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)的活性均有不同程度的升高。SOD 的活性高峰出现时期最早, CAT 次之, POD 出现最晚。从敏感型来看 , 耐性系数高的不敏感型品种(系)CAT 与 POD 的活性差异明显高于耐性系数低的敏感型品种(系),SOD 活性差异则不甚显著。由此 ,本文认为大豆钾营养敏感型间的差异可以通过保护酶系统活性差异得以表现 。
- Abstract:
- The study deals with the effect of low potassium (K) stress on protective enzyme system withdifferent supplementation of potassium concentration in four soybean varieties ("Tiefeng No. 31", "Shen-nong Nothat there is great difference in the four soybean varieties in the activity of superoxide dismutase (SOD),peroxidase (POD), and catalase (CAT). The controlled plants under low K exhibited an increasing ofSOD 、POD and CAT activities in different degrees. The activity of SOD appears earlier than that of CATand POD, but the difference of the activity of CAT and POD is more significant than that of SOD betweenthe effective types. So the difference of potassium nutrient effective types can be expressed by the differ-ence of the protective enzyme systems.
参考文献/References:
1 董钻. 大豆产量生理[ M] . 北京:中国农业出版社, 2000, 87- 90.
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备注/Memo
作者简介:王伟(1979 -), 男, 硕士研究生, 研究方向:作物抗逆生理。