Growth and Flowering of Saffron (Crocus sativus L.) with Three Corm Weights under Different LED Light Qualities

Zhu, Jiao; Zhang, Yongchun; Zhou, Lin; Yang, Liuyan

doi:10.1016/j.scienta.2022.111202

Cited by 9 publications

(7 citation statements)

References 40 publications

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“…Therefore, in this study, blue LED performed the best in terms of the quantity and quality of saffron products under controlled environments [92]. On the contrary, for saffron plants grown under sole-source lighting at 50 µmol m −2 s −1 for 12 h daily, blue LED performed worse than red LED, demonstrated by delayed flowering, reduced flower size and number, and decreased yield of dry stigma [94]. Possibly, the contrasting response to BL was due to an interaction of light spectral with light amount, which was proven to be an important affecting factor.…”

Section: Specialty Cropsmentioning

confidence: 62%

“…Also, the level of secondary metabolites in saffron is affected by environmental factors such as light [92]. For indoor cultivation of saffron, it is possible to improve flower quality and yield through the manipulation of light, including BL [94].…”

Section: Specialty Cropsmentioning

confidence: 99%

“…Saffron is a flowering specialty plant renowned for its expensive dried stigma, and this highly valued product holds significant importance in culinary, industrial, and medical applications [92,94]. Saffron quality is determined by the content of three apocarotenoids, including crocin, picrocrocin, and safranal [92].…”

Section: Specialty Cropsmentioning

confidence: 99%

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Diverse Flowering Response to Blue Light Manipulation: Application of Electric Lighting in Controlled-Environment Plant Production

Kong,

Zheng

2024

Horticulturae

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Blue light is an important light wavelength in regulating plant flowering. In a controlled environment (CE) plant production systems, blue light can be manipulated easily and even precisely through electric lighting, especially with the advancement of light-emitted diode (LED) technologies. However, the results of previous studies in the literature about blue-light-mediated flowering are inconsistent, which would limit its practical application in CE plant production while implying that an in-depth study of the relevant physiological mechanism is necessary in the future. This review consolidates and analyzes the diverse findings from previous studies on blue light-mediated plant flowering in varying high-value crops from ornamental plants to fruits, vegetables, and specialty crops. By synthesizing the contrasting results, we proposed the possible explanations and even the underlying mechanisms related to blue light intensity and exposure duration, its co-action with other light wavelengths, background environment conditions, and the involved photoreceptors. We have also identified the knowledge gaps based on these studies and outlined future directions for research and potential application in this promising field. This review provides valuable insights into the important and diverse role of blue light in plant flowering and offers a foundation for further investigations to optimize plant flowering through lighting technologies.

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Section: Specialty Cropsmentioning

confidence: 62%

Section: Specialty Cropsmentioning

confidence: 99%

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Diverse Flowering Response to Blue Light Manipulation: Application of Electric Lighting in Controlled-Environment Plant Production

Kong,

Zheng

2024

Horticulturae

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“…The dry stigmas were stored in closed glass containers and kept in darkness until qualitative analysis. The drying conditions of fresh stigma, and measurement methods of fresh weight or dry weight are following the methodology described by Zhu et al 17 The total contents of crocetin esters (including crocetin-I(C 44 H 64 O 24 ) and crocetin-II(C 38 H 54 O 19 )), shall not be less than 10.0%, were determined by the spectrophotometry according to the standard ISO 3632-1-2011 previously used in Koocheki et al 1 The determination was entrusted to the technical testing center of Shanghai Traditional Chinese Medicine Co., Ltd, and all analyses were carried out in triplicate.…”

Section: Methodsmentioning

confidence: 99%

“…Zhu et al . 17 found that monochromatic red light LED promoted saffron growth, advanced flowering, and improved total stigma dry weight and crocin production. Kajikawa et al .…”

Section: Introductionmentioning

confidence: 98%

Effects of total daily light integral from blue and broad-band red LEDs on flowering of saffron (Crocus sativus L.)

Gao

Yuan

et al. 2023

Sci Rep

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Present indoor cultivation of saffron (Crocus sativus L.) only depends on artificial planting experience, so that flower number and stigma yield are seriously affected in case of cloudy or rainy days and temperature changes. In this study, a luminaire was used at 10-h photoperiod combined 450 nm blue LEDs with 660 nm broad-band red LEDs, which respectively had full width at half maximum (FWHM) of 15 nm and 85 nm, in a ratio of blue: red: far-red light = 20%: 62%: 18%. The influence of total daily light integral (TDLI) was evaluated on flowering characteristics, stigma quality, as well as leaf morphological characteristics. The results showed that flower number, daily flowering proportion, stigma dry weight and crocetin esters content were significantly correlated with TDLI (P < 0.01). The increasing TDLI could slightly promote leaf width and leaf area beyond buds, but had no significant effect on bud length and leaf length. Both the average flower number per corm and dried stigma yield was the highest under the 150 mol m−2 TDLI treatment, up to 3.63 and 24.19 mg respectively. The former was 0.7 more than that under original natural light treatment, while the later was 50% higher. Totaling, combining blue LEDs with a broad-band red LEDs of the 150 mol m−2 TDLI was the most favorable condition for flower number and stigma quality of saffron in this study.

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Thermal management and energy efficiency analysis of planar-array LED water-cooling luminaires in vertical farming systems for saffron

Gao,

Ji,

Pei

et al. 2023

Case Studies in Thermal Engineering

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Growth and Flowering of Saffron (Crocus sativus L.) with Three Corm Weights under Different LED Light Qualities

Cited by 9 publications

References 40 publications

Diverse Flowering Response to Blue Light Manipulation: Application of Electric Lighting in Controlled-Environment Plant Production

Diverse Flowering Response to Blue Light Manipulation: Application of Electric Lighting in Controlled-Environment Plant Production

Effects of total daily light integral from blue and broad-band red LEDs on flowering of saffron (Crocus sativus L.)

Thermal management and energy efficiency analysis of planar-array LED water-cooling luminaires in vertical farming systems for saffron

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