Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System
Far-red light was excluded in photosynthetic photon flux; however, recent studies have shown that it increases photosynthetic capacity. In addition, there were few studies on the whole canopy photosynthetic rate and continuous changes of morphology on cucumber seedlings affected by far-red light. Th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Horticulturae |
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| Online Access: | https://www.mdpi.com/2311-7524/9/1/98 |
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| author | Yu Hyun Moon Myongkyoon Yang Ui Jeong Woo Ha Seon Sim Tae Yeon Lee Ha Rang Shin Jung Su Jo Sung Kyeom Kim |
| author_facet | Yu Hyun Moon Myongkyoon Yang Ui Jeong Woo Ha Seon Sim Tae Yeon Lee Ha Rang Shin Jung Su Jo Sung Kyeom Kim |
| author_sort | Yu Hyun Moon |
| collection | DOAJ |
| description | Far-red light was excluded in photosynthetic photon flux; however, recent studies have shown that it increases photosynthetic capacity. In addition, there were few studies on the whole canopy photosynthetic rate and continuous changes of morphology on cucumber seedlings affected by far-red light. This study evaluated the effect of conventional white LEDs adding far-red light on cucumber seedlings using a semi-open chamber system for the measurement of the whole canopy gas exchange rate, and the Raspberry Pi-based imaging system for the analysis of a continuous image. In the image, through the imaging system, it was confirmed that far-red light promoted the germination rate of cucumber seedlings and enhanced early growth. However, the dry weight of the shoot and root did not increase. The measured net apparent CO<sub>2</sub> assimilation rate was improved by an increasing leaf area during the cultivation period. The conventional white LED light source with added far-red light increased the photosynthetic rate of cucumber seedlings’ whole canopy. However, at the early seedling stage, plant height and leaf area of the whole canopy was increased by far-red light, and it was revealed that the image data saturated faster. It was considered that the photosynthetic efficiency decreased due to a shading effect of the limited planting density of the cell tray. The results found that using appropriate far-red light, considering planting density, could increase the photosynthetic rate of the whole canopy of crops, thereby promoting crop growth, but it was judged that the use of far-red light in the early growth stage of cucumber seedlings should be considered carefully. |
| first_indexed | 2024-03-09T12:29:59Z |
| format | Article |
| id | doaj.art-aef258cbdc7043ea9eac753a22934900 |
| institution | Directory Open Access Journal |
| issn | 2311-7524 |
| language | English |
| last_indexed | 2024-03-09T12:29:59Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Horticulturae |
| spelling | doaj.art-aef258cbdc7043ea9eac753a229349002023-11-30T22:30:54ZengMDPI AGHorticulturae2311-75242023-01-01919810.3390/horticulturae9010098Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging SystemYu Hyun Moon0Myongkyoon Yang1Ui Jeong Woo2Ha Seon Sim3Tae Yeon Lee4Ha Rang Shin5Jung Su Jo6Sung Kyeom Kim7Department of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaSmart Agriculture Innovation Center, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaDepartment of Horticultural Science, Kyungpook National University, Daegu 41566, Republic of KoreaFar-red light was excluded in photosynthetic photon flux; however, recent studies have shown that it increases photosynthetic capacity. In addition, there were few studies on the whole canopy photosynthetic rate and continuous changes of morphology on cucumber seedlings affected by far-red light. This study evaluated the effect of conventional white LEDs adding far-red light on cucumber seedlings using a semi-open chamber system for the measurement of the whole canopy gas exchange rate, and the Raspberry Pi-based imaging system for the analysis of a continuous image. In the image, through the imaging system, it was confirmed that far-red light promoted the germination rate of cucumber seedlings and enhanced early growth. However, the dry weight of the shoot and root did not increase. The measured net apparent CO<sub>2</sub> assimilation rate was improved by an increasing leaf area during the cultivation period. The conventional white LED light source with added far-red light increased the photosynthetic rate of cucumber seedlings’ whole canopy. However, at the early seedling stage, plant height and leaf area of the whole canopy was increased by far-red light, and it was revealed that the image data saturated faster. It was considered that the photosynthetic efficiency decreased due to a shading effect of the limited planting density of the cell tray. The results found that using appropriate far-red light, considering planting density, could increase the photosynthetic rate of the whole canopy of crops, thereby promoting crop growth, but it was judged that the use of far-red light in the early growth stage of cucumber seedlings should be considered carefully.https://www.mdpi.com/2311-7524/9/1/98far-red lightwhole canopy photosynthesiscucumber seedlingRaspberry Pi |
| spellingShingle | Yu Hyun Moon Myongkyoon Yang Ui Jeong Woo Ha Seon Sim Tae Yeon Lee Ha Rang Shin Jung Su Jo Sung Kyeom Kim Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System Horticulturae far-red light whole canopy photosynthesis cucumber seedling Raspberry Pi |
| title | Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System |
| title_full | Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System |
| title_fullStr | Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System |
| title_full_unstemmed | Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System |
| title_short | Evaluation of Growth and Photosynthetic Rate of Cucumber Seedlings Affected by Far-Red Light Using a Semi-Open Chamber and Imaging System |
| title_sort | evaluation of growth and photosynthetic rate of cucumber seedlings affected by far red light using a semi open chamber and imaging system |
| topic | far-red light whole canopy photosynthesis cucumber seedling Raspberry Pi |
| url | https://www.mdpi.com/2311-7524/9/1/98 |
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