LU Shao-wei,QI Fei,LI Tian-lai,et al.Effects of Tomato Fruit Development and Sucrose Metabolism by Improving the Conductivity of Nutrient Solution in Soilless Culture[J].Northern Horticulture,2012,36(19):8-11.
营养液EC值对无土栽培番茄果实发育及蔗糖代谢的影响
- Title:
- Effects of Tomato Fruit Development and Sucrose Metabolism by Improving the Conductivity of Nutrient Solution in Soilless Culture
- 文章编号:
- 1001-0009(2012)19-0008-04
- Keywords:
- conductivity; NaCl; sucrose metabolism; tomato; fruit quality
- 分类号:
- S 641.204+.7
- 文献标志码:
- A
- 摘要:
- 以番茄栽培品种‘辽园多丽’为试材，在果实发育期通过添加不同浓度的NaCl来提高营养液的EC值，研究高EC值管理对水培番茄果实产量、品质及蔗糖代谢的影响。结果表明：3个高EC值处理都提高了成熟果实中可溶性糖、有机酸和维生素C含量，而且随着EC值的增加这种提高越明显。进一步的分析发现，随着营养液EC值的提高，番茄果实各部位己糖（果糖+葡萄糖）含量增加，蔗糖转化酶（酸性转化酶+中性转化酶）活性增强，而且己糖含量的增加和转化酶活性的增强主要发生在花后40～60 d。以上结果表明：果实发育期高EC值管理下番茄果实可溶性糖含量的提高是由于蔗糖转化酶活性的增强引起的；在该试验中EC值1.25→2.5→3.8→5.2的处理果实的品质提高最多，干物重损失最少。
- Abstract:
- Taking tomato cultivar ‘Liaoyuan Duoli’ as material, the EC value of the nutrient solution was improved by adding different concentrations of NaCl in the fruit development period, and the effect of high EC on the fruit yield, quality and sucrose metabolism of tomato in water culture were studied. The results showed that 3 high EC treatments increased soluble sugar, organic acids and vitamin C content in mature fruit, and higher EC more obvious. With the improvement of EC value in nutrient solution, hexose (fructose + glucose) content in every part of tomato increased, invertase (acid invertase + neutral converting enzyme) activity enhanced, hexose content and invertase activity increased mainly in 40~60 days after flowering. The above suggested that the increase of soluble sugar content of tomato in fruit development period under high EC management was due to enhancement of sucrose conbersion enzyme activity; the fruit quality improved the most, and dry matter weight lost the minimum under EC value treatment from 1.25, 2.5, 3.8 to 5.2 in this experiment.
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备注/Memo
第一作者简介：鲁少尉（1983-），男，辽宁沈阳人，博士，现主要从事设施蔬菜逆境生理的研究工作。