于俊红,彭智平,杨少海,黄继川,詹愈忠.DA－6对干旱胁迫下花生生理及生长指标的影响[J].干旱地区农业研究,2009,27(1):168~172
DA－6对干旱胁迫下花生生理及生长指标的影响
Influence of DA－6 on physiological and growth targets of peanut under drought stress
  
DOI：10.7606/j.issn.1000-7601.2009.01.33
中文关键词:  DA-6  干旱胁迫  花生
英文关键词:DA-6 (diethyl aminoethyl hexanoate)  drought stress  peanut
基金项目:广东省农业领域重点科技攻关项目(00144191110312033)； 广东省科技厅农业攻关项目(2007A020300004-5)
作者单位
于俊红 Soil and Fertilizer Research Institute?GAAS；Guangdong Key Laboratory of Nutrient Cycling and Farm Land Conservation，Guangzhou 510640，China 
彭智平 Soil and Fertilizer Research Institute?GAAS；Guangdong Key Laboratory of Nutrient Cycling and Farm Land Conservation，Guangzhou 510640，China 
杨少海 Soil and Fertilizer Research Institute?GAAS；Guangdong Key Laboratory of Nutrient Cycling and Farm Land Conservation，Guangzhou 510640，China 
黄继川 Soil and Fertilizer Research Institute?GAAS；Guangdong Key Laboratory of Nutrient Cycling and Farm Land Conservation，Guangzhou 510640，China 
詹愈忠 Soil and Fertilizer Research Institute?GAAS；Guangdong Key Laboratory of Nutrient Cycling and Farm Land Conservation，Guangzhou 510640，China 
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中文摘要:
      通过盆栽试验研究花生干旱胁迫条件下盛花期使用DA-6对生理指标和生长指标的影响。结果表明,使用DA-6能减缓干旱胁迫对花生造成的伤害,增强花生光合产物的积累和水分利用能力,提高花生的养分吸收量和荚果产量。与干旱胁迫对照比较,喷施DA-6叶片的光合速率和蒸腾速率增加48.9%和26.6%,土施DA-6叶片的光合效率和蒸腾速率增加47.8%和68.0%,喷施后水分利用效率有明显提高;另外,喷施和土施DA-6,脯氨酸含量显著降低35.1%和62.0%,MDA含量下降44.9%和34.2%,花生荚果的产量增加7.9%和18.3%,籽粒粗脂肪含量也有显著提高。综合来看,喷施DA-6提高水分利用效率和花生籽粒粗脂肪含量的效果最好。因此,DA-6可作为节水农业上具有应用潜力的可提高作物抗旱性的新型化学调节物质。
英文摘要:
      A pot culture experiment was carried out to study the effect of DA-6 on physiology and growth targets of peanut during flowering stage under drought stress.The results indicated that the application of DA-6 could alleviate harm to peanut caused by drought stress, strengthen accumulation of the photosynthetic product and capacity of water utilization and promote the amount of nutrient absorption and pod yield.Compared with the drought stress control, the net photosynthetic speed and the transpiration rate was increased by 48.9% and 26.6% after DA-6 spraying, and 47.8% and 68.0% after DA-6 applying to soil.The water utilization efficiency of DA-6 spray was also distinctly enhanced.Furthermore, the proline content was significantly reduced by 35.1% and 62.0% in DA-6 spray and soil application treatment, MDA content was decreased by 44.9% and 34.2%, while the peanut pod yield was increased by 7.9% and 18.3%, the rough fat content was also significantly enhanced.In all treatments, DA-6 spray had the most significant effect in improving water utilization efficiency and rough fat content.Therefore, DA-6 could be a new potential chemical regulator to strengthen the crops drought resistance in water saving agriculture.
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