Effect of different LED-lighting quality conditions on growth and photosynthetic characteristics of saffron plants (Crocus sativus L.).

IF 1.6 4区生物学 Q2 PLANT SCIENCES Photosynthetica Pub Date : 2022-10-03 eCollection Date: 2022-01-01 DOI:10.32615/ps.2022.038

J Zhu, Y C Zhang, L Y Yang, L Zhou

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Abstract

The effects of different light-emitting diode (LED) lights on saffron growth and photosynthetic characteristic were explored. Physiological mechanisms were explained by chlorophyll a fluorescence transient curves (OJIP) and JIP-test parameters. A decrease in the red to blue light ratio resulted in negative effects, particularly for monochromatic blue (B) LED light; saffron seedlings showed reduced chlorophyll accumulation, inhibited leaf elongation, and decreased photosynthetic performance. In the OJIP curve, the higher positive K-band observed for B LED light indicated that oxygen-evolving complex activation significantly decreased. B LED light inhibited the electron transport between primary quinone acceptor and secondary quinone acceptor as well as the existence of reducing plastoquinone centers, and increased energy dissipation of reaction centers. Otherwise, the red to blue light ratio of 2:1 had a positive effect on saffron cultivation, resulting in the longest leaf lengths, highest chlorophyll content, and photosynthetic characteristics. This study provides theoretical guidance for saffron agricultural practices.

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不同led照明质量条件对藏红花生长和光合特性的影响

研究了不同发光二极管（LED）光源对藏红花生长和光合特性的影响。叶绿素a荧光瞬态曲线（OJIP）和jip测试参数解释了生理机制。红蓝光比的降低导致了负面影响，特别是对于单色蓝光(B) LED灯；藏红花幼苗叶绿素积累减少，叶片伸长受到抑制，光合性能下降。在OJIP曲线上，B型LED光的高正电荷k波段表明出氧络合物的激活显著降低。B LED光抑制了仲醌受体与仲醌受体之间的电子传递，抑制了还原质体醌中心的存在，增加了反应中心的能量耗散。反之，2:1的红蓝光比对藏红花的栽培有积极的影响，可以获得最长的叶长、最高的叶绿素含量和最高的光合特性。本研究为藏红花农业实践提供理论指导。

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来源期刊

Photosynthetica 生物-植物科学

CiteScore

5.60

自引率

7.40%

发文量

审稿时长

3.8 months

期刊介绍： Photosynthetica publishes original scientific papers and brief communications, reviews on specialized topics, book reviews and announcements and reports covering wide range of photosynthesis research or research including photosynthetic parameters of both experimental and theoretical nature and dealing with physiology, biophysics, biochemistry, molecular biology on one side and leaf optics, stress physiology and ecology of photosynthesis on the other side. The language of journal is English (British or American). Papers should not be published or under consideration for publication elsewhere.