Functional films have been used in greenhouses to improve the light environment for plant growth. Among them, a spectrum conversion film converting the green light of incident sunlight into red light has been reported to increase the crop productivity. However, the results are not always consistent, and the reasons for the improvement are not fully understood. The objectives of this study were to reveal the cumulative effects of a green-to-red spectrum conversion film (SCF) on the electron transport and photosynthetic performance of Fragaria × ananassa Duch. The photosynthetic efficiency, leaf optical properties, chlorophyll content, chlorophyll fluorescence, growth, and fruit qualities when the plant was grown under a transparent polyethylene film (PE) and SCF were evaluated. The sunlight modified by SCF did not change the leaf optical properties and chlorophyll content but significantly increased the chlorophyll fluorescence parameters related to reduction end electron acceptors at PSI acceptor side and the efficiency of electron transport. Without an increase in nonphotochemical quenching, the effective quantum yields of PSII and PSI of leaves grown under SCF were significantly higher than those parameters when grown under PE. Forty eight days after transplanting, the photosynthetic efficiency and photosynthetic rates of leaves and whole plants increased significantly under SCF compared to PE. The vegetative growth was not affected by SCF, but the fruit weight, sweetness, acidity, and firmness under SCF were significantly improved. These results indicated that sunlight modified by SCF stimulates electron flow and improves photosynthetic capacity and fruit quality of Fragaria × ananassa Duch.

功能性薄膜已在温室中用于改善植物生长的光环境。其中，据报道将入射太阳光的绿光转换为红光的光谱转换膜可提高作物产量。然而，结果并不总是一致的，改进的原因也没有完全理解。本研究的目的是揭示绿红光谱转换膜 (SCF) 对草莓 ×  ananassa的电子传输和光合性能的累积影响公爵。评估了植物在透明聚乙烯薄膜 (PE) 和 SCF 下生长时的光合效率、叶片光学特性、叶绿素含量、叶绿素荧光、生长和果实品质。SCF修饰的阳光并没有改变叶片的光学特性和叶绿素含量，但显着提高了与PSI受体侧还原末端电子受体和电子传输效率相关的叶绿素荧光参数。在不增加非光化学猝灭的情况下，在 SCF 下生长的叶子的 PSII 和 PSI 的有效量子产率显着高于在 PE 下生长的那些参数。移植后四十八天，与PE相比，SCF下叶片和整株植物的光合效率和光合速率显着提高。营养生长不受SCF影响，但SCF下的果实重量、甜度、酸度和紧实度均有显着改善。这些结果表明，经 SCF 修饰的阳光可刺激电子流，提高果实的光合能力和果实品质。Fragaria  ×  ananassa Duch。