WANG Qiu-ju.Effect of Water Stress on Rice Germplasm Physiological Indicators in Bud Bursting Period in Cold Region[J].HEILONGJIANG AGRICULTURAL SCIENCES,2012,(04):28-31.
水分胁迫对寒地水稻种质芽期生理指标的影响
- Title:
- Effect of Water Stress on Rice Germplasm Physiological Indicators in Bud Bursting Period in Cold Region
- 文章编号:
- 1002-2767（2012）04-0028-04
- Keywords:
- rice; bud bursting period; physiological indicators; drought tolerance
- 分类号:
- S511
- 文献标志码:
- A
- 摘要:
- 为了验证寒地水稻种质耐旱性，以15%的PEG-6000溶液为渗透介质，采用渗透胁迫的方法研究水分胁迫对寒地水稻品种芽期生理指标的影响。结果表明：水分胁迫降低了水稻的发芽势、发芽率，降低了储藏物质转运速率，增强了水稻种质根系活力和β-淀粉酶活力，水稻的发芽势、发芽率与储藏物质转运速率、根系活力和β-淀粉酶活力呈极显著正相关关系，说明储藏物质转运速率、根系活力和β-淀粉酶活力可以作为衡量水稻品种耐旱性强弱的有效生理指标。
- Abstract:
- In order to validate the drought resistance of rice germplasm，15% PEG-6000(w/v)was used to induce water stress,and the effect of water stress on physiological indicators in cold region was studied.The results showed that the rice germination potential,germination rate,reserve material conveying rate were decreased under water stress,the root activity and β-enzyme activity were increased,rice germination potential and germination rate were extremely significant positive correlation with reserve material conveying rate，root activity and β-enzyme activity,and reserve material conveying rate，root activity and β-enzyme activity could be used as the physiological indicators of accessing draught resistance of rice.
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备注/Memo
基金项目：省长基金资助项目（2009HSJ-A-2）；哈尔滨市创新工程资助项目（2010RFQYN112）