Improving spinach, radish, and lettuce growth under red light-emitting diodes (LEDs) with blue light supplementation
Improving spinach, radish, and lettuce growth under red light-emitting diodes (LEDs) with blue light supplementation
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DOI：
10.21273/hortsci.36.2.380
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发表时间：
2001-04-01
期刊：
影响因子：
1.9
通讯作者：
Sager, JC
中科院分区：
文献类型：
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作者：
Yorio, NC;Goins, GD;Sager, JC
萝卜（Raphanus sativus L.）CV. Cherriette）、莴苣（Lactuca sativa L.）CV. Waldmann的绿色）和菠菜（Spinacea oleracea L.）CV. Nordic IV）植物在660-nm棒状发光二极管（LED）下生长，并在相等的光合光子通量（PPF）下与在冷白光荧光灯（CWF）或补充有来自蓝色荧光（BF）灯的10%（30 μ mol.m（-2）.s（-1））蓝光（400-500 nm）的红色LED下生长的植物进行比较。在种植后21天（DAP），叶片光合速率和气孔导度只是更大的CWF光下生长的植物比那些生长在红色LED下，有或没有补充蓝光。在收获时（21 DAP），总干重积累显着低于所有物种测试时，红色LED下生长单独比CWF光或红色LED +10%BF光下生长。此外，萝卜和菠菜的总干重在红色LED +10%BF下显著低于在CWF光下，这表明向红色LED添加蓝光仍然不足以实现这些作物的最大生长。
Radish (Raphanus sativus L. cv. Cherriette), lettuce (Lactuca sativa L. cv. Waldmann's Green), and spinach (Spinacea oleracea L. cv. Nordic IV) plants were grown under 660-nm rod light-emitting diodes (LEDs) and were compared at equal photosynthetic photon flux (PPF) with either plants grown under cool-white fluorescent lamps (CWF) or red LEDs supplemented with 10% (30 mu mol.m(-2).s(-1)) blue light (400-500 nm) from blue fluorescent (BF) lamps. At 21 days after planting (DAP), leaf photosynthetic rates and stomatal conductance mere greater for plants grown under CWF light than for those grown under red LEDs, with or without supplemental blue light. At harvest (21 DAP), total dry-weight accumulation was significantly lower for all species tested when grown under red LEDs alone than when grown under CWF light or red LEDs + 10% BF light. Moreover, total dry weight for radish and spinach was significantly lower under red LEDs + 10% BF than under CWF light, suggesting that addition of blue light to the red LEDs was still insufficient for achieving maximal growth for these crops.