Dougher T A, Bugbee B
Crop Physiology Laboratory, Department of Plants, Soils and Biometeorology, Utah State University, 4820 Old Main Hill, Logan, UT 84322-4820, USA.
Photochem Photobiol. 2001 Feb;73(2):208-12. doi: 10.1562/0031-8655(2001)073<0208:efylso>2.0.co;2.
Researchers studying plant growth under different lamp types often attribute differences in growth to a blue light response. Lettuce plants were grown in six blue light treatments comprising five blue light fractions (0, 2, 6% from high-pressure sodium [HPS] lamps and 6, 12, 26% from metal halide [MH] lamps). Lettuce chlorophyll concentration, dry mass, leaf area and specific leaf area under the HPS and MH 6% blue were significantly different, suggesting wavelengths other than blue and red affected plant growth. Results were reproducible in two replicate studies at each of two photosynthetic photon fluxes, 200 and 500 mumol m-2 s-1. We graphed the data against absolute blue light, phytochrome photoequilibrium, phototropic blue, UV, red:far red, blue:red, blue: far red and 'yellow' light fraction. Only the 'yellow' wavelength range (580-600 nm) explained the differences between the two lamp types.
研究不同灯类型下植物生长的研究人员常常将生长差异归因于蓝光反应。生菜植株在六种蓝光处理条件下生长，这些处理包含五个蓝光比例（来自高压钠灯的0%、2%、6%，以及来自金属卤化物灯的6%、12%、26%）。在高压钠灯和6%蓝光的金属卤化物灯条件下，生菜的叶绿素浓度、干质量、叶面积和比叶面积存在显著差异，这表明除了蓝光和红光之外的波长也会影响植物生长。在光合光子通量分别为200和500 μmol m-2 s-1的两个重复实验中，结果均可重现。我们根据绝对蓝光、光敏色素光平衡、向光性蓝光、紫外线、红:远红、蓝:红、蓝:远红和“黄色”光比例绘制了数据图表。只有“黄色”波长范围（580 - 600纳米）解释了两种灯类型之间的差异。
