AO Xue,XIE Fu-ti,ZHANG Hui-jun,et al.Effect of Phosphorus on Protective Enzymes of Soybean Cultivars with Different Phosphorus Efficiencies[J].Soybean Science,2009,28(01):67-71.[doi:10.11861/j.issn.1000-9841.2009.01.0067]
磷对不同磷效率基因型大豆保护酶的影响
- Title:
- Effect of Phosphorus on Protective Enzymes of Soybean Cultivars with Different Phosphorus Efficiencies
- 文章编号:
- 1000-9841(2009)01-0067-05
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 选用不同磷效率型大豆品种,设低磷(0 kghm-2)、中磷(82.5 kghm-2)和高磷(165 kghm-2)3个磷处理,测定了不同磷效率基因型大豆叶片的SOD、POD和CAT的活性及MDA 含量的变化,并探讨了这些指标与产量的关系。结果表明,低磷条件下,磷高效品种的SOD、POD和CAT的活性在整个生育时期均保持较高水平,而MDA 含量较低。中磷和高磷对磷高效品种SOD和POD活性影响较小,生育后期CAT活性下降减缓,且可以增加磷低效品种生育后期的SOD和POD活性,使CAT活性下降时期延迟至鼓粒期。与低磷条件相比,在中、高磷条件下,磷高效品种的MDA含量分别下降了10.0%和4.8%,磷低效品种分别下降了20.9%和17.9%。说明磷高效品种具有较强的植株活性氧清除能力,能保持生物膜结构的稳定性,使其具有抵抗低磷胁迫的能力,从而获得较高产量。
- Abstract:
- Soybean is sensitive to phosphorus in the whole growth stage.Our objective is to compare activity of SOD,POD,CAT,MDA content,and the relationships between them and yield in soybean cultivars with different phosphorus efficiencies under low phosphorus(0 kgha-1),medium phosphorus(82.5 kgha-1) and high phosphorus levels (165 kgha-1) in Shenyang from 2006-2007.The results showed that activities of SOD,POD,CAT of high phosphorus efficiency cultivars(HPEC) increased with the growth of soybean,and MDA content was lower under low-phosphorus stress.Medium and high phosphorus application had little influence on activities of SOD and POD of HPEC,and activity of CAT slowly declined in the late growth stage,and the activities of SOD and POD of low phosphorus efficiency cultivars(LPEC) increased in the late growth stage,and the decreasing time of CAT activity of LPEC was delayed to the seed filling stage.Compared to low phosphorus treatment ,MDA content of HPEC declined by 10.0% and 4.8%,LPEC declined 20.9% and 17.9%,respectively,under medium phosphorus and high phosphorus levels.A strong ability of scavenging active oxygen and good membrane stability was one of reasons which soybean cultivars with high phosphorus efficiency resisted the stress of low phosphorus and had a higher yield.
参考文献/References:
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备注/Memo
基金项目:辽宁省科技厅科技基金资助项目(2006201008);辽宁省教育厅创新团队资助项目(2006T116)。