Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System
During seedling production, growth control of seedlings is an important problem because the overgrowth of seedlings causes a decrease of seedling quality and has disadvantages after transplanting. In this study, we aim to evaluate the possibility of replacing chemical plant growth regulators using l...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/9/5/639 |
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| author | Hyeon Woo Jeong Hye Ri Lee Hyeon Min Kim Hye Min Kim Hee Sung Hwang Seung Jae Hwang |
| author_facet | Hyeon Woo Jeong Hye Ri Lee Hyeon Min Kim Hye Min Kim Hee Sung Hwang Seung Jae Hwang |
| author_sort | Hyeon Woo Jeong |
| collection | DOAJ |
| description | During seedling production, growth control of seedlings is an important problem because the overgrowth of seedlings causes a decrease of seedling quality and has disadvantages after transplanting. In this study, we aim to evaluate the possibility of replacing chemical plant growth regulators using light quality in a closed-type plant production system (CPPS) for cucumber seedling production. We used various light treatments, such as monochromatic or combined red (R) and blue (B), and combined R and B with UV-A or Far-red (Fr) light, to compare with a chemical plant growth regulator conventionally using in nursery farms. The combined R and B treatment decreased stem elongation and increased dry matter and compactness. UV-A treatment increased compactness but did not significantly affect the stem elongation or dry matter. Fr increased stem elongation and stem diameter and decreased compactness and dry matter. In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index. Fr treatments increased leaf area and leaf shape index and decreased specific leaf weight (SLW) and SPAD values. Cucumber seedlings have many different morphological changes, and R5B5 light quality was more effective in growth control due to higher compactness than chemical plant growth regulators. Also, R5B5 light quality has increased seedling quality, such as dry matter and SLW compared with fluorescent lamps. Thus, the use of light quality is a possible alternative to a chemical plant growth regulator. |
| first_indexed | 2024-03-10T19:46:34Z |
| format | Article |
| id | doaj.art-57b6d829e26d43febe96700b5fc52911 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T19:46:34Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-57b6d829e26d43febe96700b5fc529112023-11-20T00:45:23ZengMDPI AGPlants2223-77472020-05-019563910.3390/plants9050639Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production SystemHyeon Woo Jeong0Hye Ri Lee1Hyeon Min Kim2Hye Min Kim3Hee Sung Hwang4Seung Jae Hwang5Division of Applied Life Science, Graduate School of Gyeongsang National University, Jinju 52828, KoreaDivision of Applied Life Science, Graduate School of Gyeongsang National University, Jinju 52828, KoreaDivision of Plant Resources, Korea National Arboretum, Yangpyeong 12519, KoreaProtected Horticulture Research Institute, National Institute of Horticultural and Herbal Science, Rural Development Administration, Haman 52054, KoreaDivision of Crop Science, Graduate School of Gyeongsang National University, Jinju 52828, KoreaDivision of Applied Life Science, Graduate School of Gyeongsang National University, Jinju 52828, KoreaDuring seedling production, growth control of seedlings is an important problem because the overgrowth of seedlings causes a decrease of seedling quality and has disadvantages after transplanting. In this study, we aim to evaluate the possibility of replacing chemical plant growth regulators using light quality in a closed-type plant production system (CPPS) for cucumber seedling production. We used various light treatments, such as monochromatic or combined red (R) and blue (B), and combined R and B with UV-A or Far-red (Fr) light, to compare with a chemical plant growth regulator conventionally using in nursery farms. The combined R and B treatment decreased stem elongation and increased dry matter and compactness. UV-A treatment increased compactness but did not significantly affect the stem elongation or dry matter. Fr increased stem elongation and stem diameter and decreased compactness and dry matter. In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index. Fr treatments increased leaf area and leaf shape index and decreased specific leaf weight (SLW) and SPAD values. Cucumber seedlings have many different morphological changes, and R5B5 light quality was more effective in growth control due to higher compactness than chemical plant growth regulators. Also, R5B5 light quality has increased seedling quality, such as dry matter and SLW compared with fluorescent lamps. Thus, the use of light quality is a possible alternative to a chemical plant growth regulator.https://www.mdpi.com/2223-7747/9/5/639chemical plant growth regulatorcompactnessFr lighthypocotyl lengthUV-A |
| spellingShingle | Hyeon Woo Jeong Hye Ri Lee Hyeon Min Kim Hye Min Kim Hee Sung Hwang Seung Jae Hwang Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System Plants chemical plant growth regulator compactness Fr light hypocotyl length UV-A |
| title | Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System |
| title_full | Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System |
| title_fullStr | Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System |
| title_full_unstemmed | Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System |
| title_short | Using Light Quality for Growth Control of Cucumber Seedlings in Closed-Type Plant Production System |
| title_sort | using light quality for growth control of cucumber seedlings in closed type plant production system |
| topic | chemical plant growth regulator compactness Fr light hypocotyl length UV-A |
| url | https://www.mdpi.com/2223-7747/9/5/639 |
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