書誌事項
- タイトル別名
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- Intensity Dependence of the Growth Promotion of Cucumber Seedlings by Supplemental Blue-Lighting at Morning Twilight.
- ヒノデマエ ノ セイショクコウ ホコウ ニヨル キュウリ ナエ ノ セイチョウ
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Cucumber (Cucumis sativus L. cv. Naoyosi) plants were grown hydroponically at air temperatures of 28/24°C (D/N) and 300 μmol m-2 s-1 PPFD, in a walk-in type growth cabinet equipped with 3-band fluorescent lamps. At 10, 30, 100, 200 μmol m-2 s-1 PPFD, supplemental blue-lighting was applied daily for 5min just before the 14h photoperiod (morning twilight).<BR>Growth parameters were measured after 7 and 14 days of treatment. After 13 days of treatment, the stomatal conductance, transpiration rate and photosynthetic rate were measured under 3-band fluorescent lamps at a PPFD of 300 μmol m-2 s-1. At 12-14 days of treatment, changes in photosynthetic rate were measured continuously for 30 minutes, after the end of supplemental blue-lighting.<BR>Dry weight, leaf area, stem diameter of plants were the greatest with blue-lighting at 30 μmol m-2 s-1 PPFD. The stomatal conductance, transpiration rate and photosynthetic rate after 13days of treatment were greatest in the plants grown with supplemental blue light at 30 and 100 μmol m-2 s-1 PPFD. The photosynthetic rate at 30 μmol m-2 s-1 PPFD increased by 23% as compared with that of control plants grown without supplemental lighting. Continuous measurements showed photosynthetic rate to rise, and the high level was maintained with 30 μmol m-2 s-1 PPFD blue-lighting treatment.<BR>These results indicate that the promotion of plant growth by supplemental blue-lighting at morning twilight is dependent on the lighting intensity.
収録刊行物
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- 植物工場学会誌
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植物工場学会誌 9 (4), 271-277, 1997
日本生物環境工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679357073664
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- NII論文ID
- 10024573693
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- NII書誌ID
- AN10451761
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- ISSN
- 18803555
- 09186638
- http://id.crossref.org/issn/09186638
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- NDL書誌ID
- 4345027
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可