Mild Fe-deficiency improves biomass production and quality of hydroponic-cultivated spinach plants (Spinacia oleracea L.)
Mild Fe-deficiency improves biomass production and quality of hydroponic-cultivated spinach plants (Spinacia oleracea L.)
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轻度缺铁可提高水培菠菜植物 (Spinacia oleracea L.) 的生物量产量和质量
DOI：
10.1016/j.foodchem.2012.12.025
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发表时间：
2013-06-15
期刊：
影响因子：
8.8
通讯作者：
Du, Shao-Ting
中科院分区：
文献类型：
--
作者：
Jin, Chong-Wei;Liu, Yue;Du, Shao-Ting
无土栽培对提高蔬菜产量和品质具有重要的现实意义。研究了铁营养管理对水培菠菜产量和品质的影响。结果表明，轻度缺铁处理（1 μ M FeEDTA）比缺铁处理（0 μ M FeEDTA）或铁充足处理（10和50 μ M FeEDTA）产生更大的可食部分生物量。相反，轻度缺铁处理有最低的硝酸盐浓度在可食用部分的所有铁处理。有趣的是，所有的可溶性糖，可溶性蛋白质和抗坏血酸的浓度在轻度缺铁处理高于铁充足的处理。此外，轻度缺铁处理的酚类物质含量和DPPH自由基清除活性与缺铁处理相当，但高于缺铁处理。因此，我们得出结论，使用温和的缺铁营养液栽培菠菜不仅可以提高产量，而且可以改善品质。(C)2012爱思唯尔有限公司保留所有权利。
It is of great practical importance to improve yield and quality of vegetables in soilless cultures. This study investigated the effects of iron-nutrition management on yield and quality of hydroponic-cultivated spinach (Spinacia oleracea L.). The results showed that mild Fe-deficient treatment (I mu M FeEDTA) yielded a greater biomass of edible parts than Fe-omitted treatment (0 mu M FeEDTA) or Fe-sufficient treatments (10 and 50 mu M FeEDTA). Conversely, mild Fe-deficient treatment had the lowest nitrate concentration in the edible parts out of all the Fe treatments. Interestingly, all the concentrations of soluble sugar, soluble protein and ascorbate in mild Fe-deficient treatments were higher than Fe-sufficient treatments. In addition, both phenolic concentration and DPPH scavenging activity in mild Fe-deficient treatments were comparable with those in Fe-sufficient treatments, but were higher than those in Fe-omitted treatments. Therefore, we concluded that using a mild Fe-deficient nutrition solution to cultivate spinach not only would increase yield, but also would improve quality. (C) 2012 Elsevier Ltd. All rights reserved.