首页> 外文期刊>The Journal of Horticultural Science & Biotechnology >Production of iron enriched vegetables: Effect of feeding time on the rate of increase in foliar iron content and foliar injury
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Production of iron enriched vegetables: Effect of feeding time on the rate of increase in foliar iron content and foliar injury

机译:富铁蔬菜的生产:喂食时间对叶面铁含量增加和叶面伤害的速率的影响

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The effect of feeding time on the rate of increase in foliar Fe content and foliar injury was investigated. The roots of spinach (Spinacia oleracea L., cv. Leed), leaf lettuce (Lactuca sativa L., cv. Redfire) and bunching onion (Allium fistulosum L., cv. Hakata Kuronegi) were fed ammonium ferric citrate (AFC; 100 mg l~(-1)) for 3, 6, 9, 12 and 15 h or EDTA-Fe (50 mg l~(-1)) for 1, 3, 6, 9 and 12 h in a climatron (temperature: 27 deg C; relative humidity: 45-55%; PPFD: 380 #mu#mol m~(-2) s~(-1)). The foliar Fe content showed a near linear increase with time in both the AFC- and EDTA-Fe treatments. In the AFC treatment, foliar injuries in spliach occurred after feeding for 12 h and in lettuce and bunching onion after 9 h. In the EDTA-Fe-treatment, foliar injury in all the plants occurred by feeding for 6 h, and the Fe content in these leaves was obviously lower than that in the AFC-treatment for treatments of the same duration. Thus, EDTA-Fe is unsuitable for this treatment from a practical viewpoint. The foliar Fe content (mg per 100 g fresh weight) in spinach (blades), which had no foliar injuries after feeding AFC for 9 h, was 6.00 +- 0.92 (initial value: 0.82 +- 0.06). In lettuce and bunching onion after feeding for 6 h, it was 3.05 +- 0.40 and 2.00 +- 0.32 (initial value: 0.82 +- 0.05 and 0.58 +- 0.04), respectively. From these results, the incremental rate of the foliar Fe content per hour and the treatment time at which the foliar injury appeared can be estimated in advance given certain treatment conditions. Thus leaf vegetables in which the foliar Fe content is known can be produced without foliar injury.
机译:研究了进食时间对叶面铁含量增加速率和叶面损伤的影响。菠菜根(Spinacia oleracea L.,cv。Leed),生菜(Lactuca sativa L.,cv。Redfire)和聚洋葱(Allist fistulosum L.,ckata.Hakata Kuronegi)的根被喂入柠檬酸铁铵(AFC; 100)毫克l〜(-1))3、6、9、12和15 h或EDTA-Fe(50毫克l〜(-1))1、3、6、9和12 h 27℃;相对湿度:45-55%; PPFD:380#mu#mol m·(-2)s·(-1))。在AFC和EDTA-Fe处理中,叶面Fe含量均显示随时间呈线性增长。在AFC处理中,进食12 h后对叶片的叶片造成伤害,而9 h后对生菜和洋葱束造成叶片伤害。在EDTA-Fe处理中,所有植物因进食6 h而发生叶损伤,并且在相同时间的处理下,这些叶片中的Fe含量明显低于AFC处理。因此,从实用的角度来看,EDTA-Fe不适合该处理。喂食AFC 9小时后无叶损伤的菠菜(叶片)中的叶面Fe含量(mg /每100 g鲜重)为6.00±0.92(初始值:0.82±0.06)。进食6小时后的生菜和洋葱束分别为3.05±0.40和2.00±0.32(初始值:0.82±0.05和0.58±0.04)。从这些结果,可以在给定的治疗条件下预先估计每小时叶面铁含量的增加速率和出现叶面损伤的治疗时间。因此,可以生产已知叶面Fe含量的叶类蔬菜而无叶面损伤。

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