1. RPO film effectively promotes fruit quality and yield of cucumber through adjusting greenhouse environment and hormone contents.
- Author
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Li, Ru, Gao, Yaxin, Cai, Bingbing, Li, Gongfeng, Xue, Zhanjun, Wang, Xin-Xin, and Li, Qingyun
- Subjects
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FRUIT quality , *AGRICULTURAL productivity , *FRUIT yield , *ULTRAVIOLET radiation , *VITAMIN C , *CUCUMBERS - Abstract
Light conversion films are crucial for optimizing vegetable crop production in greenhouses, particularly during winter and spring seasons. This study investigated the effects of a europium-based light conversion film (RPO) compared to traditional polyolefin film (PO film, control) on cucumber (Cucumis sativus L.) cultivation, focusing on handle length, yield, and fruit quality in a randomized complete block design with three replications. Results demonstrated that RPO film significantly enhanced multiple light parameters: overall transmittance (8.5% increase), far-red radiation (710–760 nm, 17% increase), red-orange radiation (610–709 nm, 9.8% increase), and blue radiation (440–509 nm, 9.6% increase). The film also increased average light intensity (400–700 nm) by 13% and maximum temperature by 13%. Conversely, it reduced ultraviolet radiation (300–399 nm) by 38%, violet radiation (400–439 nm) by 3.3%, and green radiation (510–609 nm) by 5.7%. The modified light environment substantially improved cucumber production metrics. Handle length ratio decreased by 24% due to reduced cell numbers, while yield increased by 30%. Fruit quality parameters showed significant improvements: soluble protein (25% increase), vitamin C (27% increase), free amino acids (28% increase), and soluble solids (9% increase), with a 35% reduction in organic acid content. Notably, both auxin synthesis gene expression and auxin content in cucumber handles decreased by 87% and 24%, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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