College of Horticulture, Henan Agricultural University, Zhengzhou, China.
PLoS One. 2021 Mar 5;16(3):e0247882. doi: 10.1371/journal.pone.0247882. eCollection 2021.
Continuous darkness decreases seedling quality during storage, whereas appropriate light quality and intensity can overcome these negative effects. In this study, we determined the light intensity, storage time (ST), and storage temperature suitable for cucumber (Cucumis sativa L.) seedlings. We stored cucumber seedlings under four different photosynthetic photon flux densities (PPFDs; 0, 15, 30, and 45 μmol·m-2·s-1) at 12°C, and examined how the morphological, physiological, and photosynthetic changes in seedlings during storage affected their ability to recover after transplanting. Our results indicated that at least 15 μmol·m-2·s-1 PPFD was needed for cucumber seedlings stored in the dark for 2 or 4 d, and at least 30 μmol·m-2·s-1 PPFD was needed when the ST was extended to 6 d. Overall, our results showed that cucumber seedlings require light-emitting diode (LED) illumination during storage to maintain their quality and recovery ability.
连续的黑暗会降低种子在贮藏期间的质量，而适当的光质和强度可以克服这些负面影响。在这项研究中，我们确定了适合黄瓜（Cucumis sativa L.）幼苗的光强、贮藏时间（ST）和贮藏温度。我们将黄瓜幼苗在 12°C 下分别置于四种不同的光合光子通量密度（PPFD；0、15、30 和 45 μmol·m-2·s-1）下贮藏，研究了幼苗在贮藏过程中形态、生理和光合的变化如何影响其移栽后的恢复能力。结果表明，黑暗中贮藏 2 或 4 天的黄瓜幼苗至少需要 15 μmol·m-2·s-1 的 PPFD，而 ST 延长至 6 天时则至少需要 30 μmol·m-2·s-1 的 PPFD。总体而言，我们的结果表明，黄瓜幼苗在贮藏期间需要发光二极管（LED）照明来维持其质量和恢复能力。
