Effects of Extended Light/Dark Cycles on Solanaceae Plants
The absence of an externally-imposed 24 h light/dark cycle in closed plant production systems allows setting the light environmental parameters in unconventional ways. Innovative lighting modes for energy-saving, high-quality, and yield production are widely discussed. This study aimed to evaluate t...
| Principais autores: | , , , , , |
|---|---|
| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
MDPI AG
2024-01-01
|
| coleção: | Plants |
| Assuntos: | |
| Acesso em linha: | https://www.mdpi.com/2223-7747/13/2/244 |
| _version_ | 1827369392797646848 |
|---|---|
| author | Tatjana G. Shibaeva Elena G. Sherudilo Elena Ikkonen Alexandra A. Rubaeva Ilya A. Levkin Alexander F. Titov |
| author_facet | Tatjana G. Shibaeva Elena G. Sherudilo Elena Ikkonen Alexandra A. Rubaeva Ilya A. Levkin Alexander F. Titov |
| author_sort | Tatjana G. Shibaeva |
| collection | DOAJ |
| description | The absence of an externally-imposed 24 h light/dark cycle in closed plant production systems allows setting the light environmental parameters in unconventional ways. Innovative lighting modes for energy-saving, high-quality, and yield production are widely discussed. This study aimed to evaluate the effects of the light/dark cycles of 16/8 h (control) and 24/12 h, 48/24 h, 96/48 h, 120/60 h (unconventional cycles) based on the same total light amount, and continuous lighting (360/0 h) on plant performance of some Solanaceae species. Responses of eggplant (<i>Solanum melongena</i> L.), sweet pepper (<i>Capsicum annuum</i> L.), tobacco (<i>Nicotiana tabacum</i> L.), and tomato (<i>Solanum lycopersicum</i> L.) plants to extended light/dark cycles and continuous lighting were studied under controlled climate conditions. Plants with two true leaves were exposed to different light/dark cycles for 15 days. Light intensity was 250 µmol m<sup>−2</sup> s<sup>−1</sup> PPFD, provided by light-emitting diodes (LEDs). After the experiment, tomato, sweet pepper, and eggplant transplants were planted in a greenhouse and grown under identical conditions of natural photoperiod for the estimation of the after-effect of light treatments on fruit yield. Extended light/dark cycles of 24/12 h, 48/24 h, 96/48 h, 120/60 h, and 360/0 h affected growth, development, photosynthetic pigment content, anthocyanin and flavonoid content, and redox state of plants. Effects varied with plant species and length of light/dark cycles. In some cases, measured parameters improved with increasing light/dark periods despite the same total sum of illumination received by plants. Treatments of tomato and pepper transplants with 48/24 h, 96/48 h, and 120/60 h resulted in higher fruit yield compared to conventional 16/8 h photoperiod. The conclusion was made that extended light/dark cycles can result in increased light use efficiency compared to conventional photoperiod and, therefore, reduced product cost, but for practical application, the effects need to be further explored for individual plant species or even cultivars. |
| first_indexed | 2024-03-08T09:47:33Z |
| format | Article |
| id | doaj.art-1c21b3234e044ac2a84444836b0a8a02 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-08T09:47:33Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-1c21b3234e044ac2a84444836b0a8a022024-01-29T14:11:18ZengMDPI AGPlants2223-77472024-01-0113224410.3390/plants13020244Effects of Extended Light/Dark Cycles on Solanaceae PlantsTatjana G. Shibaeva0Elena G. Sherudilo1Elena Ikkonen2Alexandra A. Rubaeva3Ilya A. Levkin4Alexander F. Titov5Institute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk 185910, RussiaInstitute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk 185910, RussiaInstitute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk 185910, RussiaInstitute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk 185910, RussiaInstitute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk 185910, RussiaInstitute of Biology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk 185910, RussiaThe absence of an externally-imposed 24 h light/dark cycle in closed plant production systems allows setting the light environmental parameters in unconventional ways. Innovative lighting modes for energy-saving, high-quality, and yield production are widely discussed. This study aimed to evaluate the effects of the light/dark cycles of 16/8 h (control) and 24/12 h, 48/24 h, 96/48 h, 120/60 h (unconventional cycles) based on the same total light amount, and continuous lighting (360/0 h) on plant performance of some Solanaceae species. Responses of eggplant (<i>Solanum melongena</i> L.), sweet pepper (<i>Capsicum annuum</i> L.), tobacco (<i>Nicotiana tabacum</i> L.), and tomato (<i>Solanum lycopersicum</i> L.) plants to extended light/dark cycles and continuous lighting were studied under controlled climate conditions. Plants with two true leaves were exposed to different light/dark cycles for 15 days. Light intensity was 250 µmol m<sup>−2</sup> s<sup>−1</sup> PPFD, provided by light-emitting diodes (LEDs). After the experiment, tomato, sweet pepper, and eggplant transplants were planted in a greenhouse and grown under identical conditions of natural photoperiod for the estimation of the after-effect of light treatments on fruit yield. Extended light/dark cycles of 24/12 h, 48/24 h, 96/48 h, 120/60 h, and 360/0 h affected growth, development, photosynthetic pigment content, anthocyanin and flavonoid content, and redox state of plants. Effects varied with plant species and length of light/dark cycles. In some cases, measured parameters improved with increasing light/dark periods despite the same total sum of illumination received by plants. Treatments of tomato and pepper transplants with 48/24 h, 96/48 h, and 120/60 h resulted in higher fruit yield compared to conventional 16/8 h photoperiod. The conclusion was made that extended light/dark cycles can result in increased light use efficiency compared to conventional photoperiod and, therefore, reduced product cost, but for practical application, the effects need to be further explored for individual plant species or even cultivars.https://www.mdpi.com/2223-7747/13/2/244intermittent light irradiationlight-dark cyclecontinuous lightingtomatoeggplantpepper |
| spellingShingle | Tatjana G. Shibaeva Elena G. Sherudilo Elena Ikkonen Alexandra A. Rubaeva Ilya A. Levkin Alexander F. Titov Effects of Extended Light/Dark Cycles on Solanaceae Plants Plants intermittent light irradiation light-dark cycle continuous lighting tomato eggplant pepper |
| title | Effects of Extended Light/Dark Cycles on Solanaceae Plants |
| title_full | Effects of Extended Light/Dark Cycles on Solanaceae Plants |
| title_fullStr | Effects of Extended Light/Dark Cycles on Solanaceae Plants |
| title_full_unstemmed | Effects of Extended Light/Dark Cycles on Solanaceae Plants |
| title_short | Effects of Extended Light/Dark Cycles on Solanaceae Plants |
| title_sort | effects of extended light dark cycles on solanaceae plants |
| topic | intermittent light irradiation light-dark cycle continuous lighting tomato eggplant pepper |
| url | https://www.mdpi.com/2223-7747/13/2/244 |
| work_keys_str_mv | AT tatjanagshibaeva effectsofextendedlightdarkcyclesonsolanaceaeplants AT elenagsherudilo effectsofextendedlightdarkcyclesonsolanaceaeplants AT elenaikkonen effectsofextendedlightdarkcyclesonsolanaceaeplants AT alexandraarubaeva effectsofextendedlightdarkcyclesonsolanaceaeplants AT ilyaalevkin effectsofextendedlightdarkcyclesonsolanaceaeplants AT alexanderftitov effectsofextendedlightdarkcyclesonsolanaceaeplants |