Effect of Light Quality on Growth and Vegetable Quality in Leaf Lettuce, Spinach and Komatsuna
Effect of Light Quality on Growth and Vegetable Quality in Leaf Lettuce, Spinach and Komatsuna
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DOI：
10.2525/ecb.45.189
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发表时间：
2007-09
影响因子：
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通讯作者：
K. Ohashi-Kaneko;M. Takase;Noya Kon;K. Fujiwara;K. Kurata
中科院分区：
文献类型：
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作者：
K. Ohashi-Kaneko;M. Takase;Noya Kon;K. Fujiwara;K. Kurata
研究了光品质对叶莴苣、菠菜和小松生物量和内在品质的影响。在光照周期12 h、光暗温度20±1℃/18±1℃、光合光子通量密度（PPFD） 300 μmol m-2 s-1的环境控制室内，在红色荧光灯的红光(R)、蓝色荧光灯的蓝光(B)或R与B混合（RB）或白色荧光灯的白光(W) 4种光质处理下进行水培。与W相比，R辐照增加了小松茎部干重，降低了菠菜中硝酸盐含量。与辐照W相比，辐照B或RB能提高叶莴苣和小松的l -抗坏血酸含量，降低叶莴苣的硝酸盐含量。虽然类胡萝卜素含量略有增加，但B辐照使菠菜干重大大降低，因此不适合菠菜栽培。我们的数据表明，在受控环境的农业设施中，即使在有限的光强下，控制光质量也有助于提高经济作物的生产力或营养品质，尽管有效的光质量处理因植物种类而异。
The effects of light quality on biomass and internal quality of leaf lettuce, spinach and komatsuna were examined. The plants were grown hydroponically in an environmentally controlled room with a 12-h light period and under a light/dark temperature of 20±1°C/18±1°C and a photosynthetic photon flux density (PPFD) of 300 μmol m-2 s-1 under four light quality treatments, i.e., red light from red fluorescent lamps (R) or blue light from blue fluorescent lamps (B) or a mixture of R and B (RB) or white light from white fluorescent lamps (W). The irradiation of R compared with W increased shoot dry weight in komatsuna and decreased the nitrate content in spinach. Irradiation of B or RB compared with W increased the L-ascorbic acid content in leaf lettuce and komatsuna and decreased the nitrate content in leaf lettuce. Irradiation of B was not suitable for the spinach cultivation due to an extremely decreased shoot dry weight although the carotenoid content was slightly increased. Our data show that controlling light quality is useful to achieve higher productivity or higher nutritional quality of the commercial crops even under limited light intensity in controlled-environment agricultural facilities although the effective light quality treatment differs depending on the plant species.