Gao Yaxin, Li Gongfeng, Cai Bingbing, Zhang Ziming, Li Ning, Liu Yike, Li Qingyun
College of Horticulture, Hebei Agricultural University, Baoding, China.
Front Plant Sci. 2022 Sep 6;13:989271. doi: 10.3389/fpls.2022.989271. eCollection 2022.
Light is an important environmental factor influencing plant growth and development. However, artificial light supplement is difficult to spread for its high energy consumption. In recent years, rare-earth light conversion film (RPO) covering is being focused on to be a new technology to study the mechanism of light affecting plant growth and development. Compared with the polyolefin film (PO), the RPO film advanced the temperature and light environment inside the greenhouse. Ultimately, improved growth and higher yield were detected because of a higher photosynthesis, Rubisco activity and Rubisco small subunit transcription. Compared with that in the greenhouse with polyolefin film, the plant height, stem diameter and internode length of sweet pepper treated with RPO increased by 11.05, 16.96 and 25.27%, respectively. In addition, Gibberellic acid 3 (GA3), Indole-3-acetic acid (IAA), Zeatin Riboside contents were increased by 11.95, 2.84 and 16.19%, respectively, compared with that with PO film. The fruit quality was improved, and the contents of ascorbic acid (Vc), soluble protein and soluble sugar were significantly higher than those of PO film, respectively, increased by 14.29, 47.10 and 67.69%. On the basis of improved fruit quality, the yield of RPO treatment increased by 20.34% compared with PO film. This study introduces an effective and low-energy method to study the mechanism and advancing plant growth in fruit vegetables production.
光是影响植物生长发育的重要环境因素。然而，人工补光因其高能耗而难以推广。近年来，稀土转光膜（RPO）覆盖作为一种研究光影响植物生长发育机制的新技术受到关注。与聚烯烃薄膜（PO）相比，RPO膜改善了温室内的温度和光照环境。最终，由于光合作用增强、核酮糖-1,5-二磷酸羧化酶（Rubisco）活性提高以及Rubisco小亚基转录水平上升，植株生长得到改善，产量提高。与使用聚烯烃薄膜的温室相比，用RPO处理的甜椒株高、茎粗和节间长度分别增加了11.05%、16.96%和25.27%。此外，与使用PO膜相比，赤霉酸3（GA3）、吲哚-3-乙酸（IAA）、玉米素核苷含量分别增加了11.95%、2.84%和16.19%。果实品质得到改善，抗坏血酸（Vc）、可溶性蛋白和可溶性糖含量均显著高于PO膜，分别提高了14.29%、47.10%和67.69%。在果实品质改善的基础上，RPO处理的产量比PO膜提高了20.34%。本研究介绍了一种有效且低能耗的方法，用于研究果菜生产中植物生长机制并促进植物生长。
