光照强度对甜罗勒和生菜生长及抗氧化活性的影响。

Effect of Light Intensity on the Growth and Antioxidant Activity of Sweet Basil and Lettuce.

作者信息

Sutulienė Rūta, Laužikė Kristina, Pukas Tomas, Samuolienė Giedrė

机构信息

Lithuanian Research Centre for Agriculture and Forestry, Institute of Horticulture, Kaunas Str. 30, LT-54333 Babtai, Lithuania.

Elektros Taupymo Sprendimai, Liepu Str. 15, LT-53290 Kaunas, Lithuania.

出版信息

Plants (Basel). 2022 Jun 28;11(13):1709. doi: 10.3390/plants11131709.

Light and nutrients are among the most important factors for sustained plant production in agriculture. As one of the goals of the European Green Deal strategy is to reduce energy consumption, greenhouse growers focus on high-value crop cultivation with less-energy-demanding growing systems. This study aimed to evaluate the effect of fertilization at different light intensities on the growth of lettuce and basil and the activity of the antioxidant system. Sweet basil (, 'Opal') and lettuce (, 'Nikolaj') were grown in a greenhouse supplementing natural light (~80 µmol m s) with lighting at two photon flux densities (150 and 250 µmol m s), 16 h photoperiod, and 20/16 °C day/night temperature in May (Lithuania, 55°60' N, 23°48' E). In each light regime treatment, half of the plants were grown without additional fertilization; the other half were fertilized twice a week with a complex fertilizer (NPK 3-1-3). The results showed that the antioxidant activity of basil was most affected by 150 µmol m s PPFD lighting and the absence of fertilization. Altered antioxidant activity in lettuce in the presence of 250 µmol m s PPFD additional light intensity and fertilization resulted in higher morphological parameters.

光照和养分是农业中植物持续生产的最重要因素之一。由于欧洲绿色协议战略的目标之一是减少能源消耗，温室种植者专注于采用低能耗种植系统进行高价值作物种植。本研究旨在评估不同光照强度下施肥对生菜和罗勒生长以及抗氧化系统活性的影响。甜罗勒（品种‘Opal’）和生菜（品种‘Nikolaj’）于5月在立陶宛（北纬55°60′，东经23°48′）的温室中种植，该温室补充自然光（约80 μmol m⁻² s⁻¹），并设置了两个光子通量密度（150和250 μmol m⁻² s⁻¹）的光照、16小时光周期以及20/16 °C的日/夜温度。在每种光照处理中，一半植株不额外施肥；另一半植株每周用复合肥（NPK 3-1-3）施肥两次。结果表明，150 μmol m⁻² s⁻¹的光合光子通量密度（PPFD）光照且不施肥对罗勒的抗氧化活性影响最大。在250 μmol m⁻² s⁻¹的额外光照强度和施肥条件下，生菜抗氧化活性的改变导致了更高的形态学参数。