在不同的光谱下培养的绿菜和红菜微绿的形态和光合作用参数
Barbara Frąszczak1, Monika Kula-Maximenko2, Anna Podsędek3
1Department of Vegetable Crops, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland.
Plants (Basel, Switzerland)
|November 25, 2023
概括
优化开微绿的光谱可以增强诸如黄类和胡卜素类的营养化合物. 红光有利于红叶开,而蓝光有助于绿色开,表明为最佳生长和质量提供量身定制的光线需求.
科学领域:
- 园艺科学 园艺科学
- 植物生理学 植物生理学
- 农业工程 农业工程
背景情况:
- 微青菜,特别是来自布拉西卡家族的青菜,是营养密集的,通常在室内使用发光二极管 (LED) 种植.
- 微绿的质量受到种植过程中使用的光谱的显著影响,因此需要研究最佳光照条件.
研究的目的:
- 为了研究不同红色 (R) 和蓝色 (B) 光比例的人造白光对绿色和红叶开微绿的形态和光合作用特征的影响.
- 确定理想的光谱,以最大限度地提高绿菜微绿的营养价值和产量.
主要方法:
- 在受控条件下种植的绿微绿 (绿色和红色叶子) 具有特定的红色:蓝色 (R:B) 光比:白光 (W) 0.63,红色增强的白光 (W + R) 0.75,蓝色增强的白光 (W + B) 0.38,均在230μmol m−2 s−1 PPFD.
- 评估的参数包括形态特征 (叶面积,干质量),光合作用效率 (叶绿素含量,PSII活力) 和生物活性化合物的度 (黄类,胡卜素).
主要成果:
- 红色和蓝色光的添加都对绿菜微绿中的黄酸盐和胡卜素含量产生了积极的影响.
- 红光显著增加了红叶开心菜的苗片面积,干质量和相对叶绿素含量,而蓝光对绿色开心菜的干质量有更大的影响.
- W + B光组合降低了两种品种的叶绿素含量,但与W + R光相比,叶子更厚. 红叶菜在其光合作用装置中对测试光谱的敏感性较低,PSII活力的变化较小.
结论:
- 开罗微绿植物受益于特定的光谱组合,红色和蓝色光对不同品种和参数有着独特的影响.
- 与绿菜相比,红叶菜对不同光谱具有更大的弹性.
- 量身定制的光谱,根据生长阶段和品种调整红色和蓝色光的比例,对于优化菜微绿产量和营养质量至关重要.
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