Influence of LED and LD Lights on the Growth of Lettuce.

Abstract

Photosynthetic rate and growth rate measurements were carried out for lettuce using red laser diodes (LD) and various spectra of light emitting diodes (LED). It was found that lettuce grew healthily under red LD (650 nm) and blue LED with R/B ratio 10. However,both photosynthetic rate and growth rate rather diminished compared with LED case. •• OE¾ •Å‹ß,Š® 'S • § OEäOE^ •A•¨ •H•ê ‚Ì OEõOE¹‚ ‚é ‚¢ ‚Í '¾-z OEõ-˜-p OE^ •A•¨ •H•ê ‚Ì •â OEõ-p OEõ OE¹‚AE‚µ‚Ä,‹ß "N"-"W‚Ì '˜ ‚µ‚¢ ‰Â Ž‹ "-OEõƒ_ ƒCƒI •[ ƒh(LED)‚AE ‰Â Ž‹ "¼"± 'Ì ƒOE •[ ƒU•[ ƒ_ƒCƒI •[ ƒh(LD)‚ð Žg-p ‚· ‚é‰Â "\ •« ‚ª OEŸ "¢ ‚³ ‚ê ‚Ä‚¢ ‚é.•Ô •FLED ‚Ì ‚Ý‚É‚ae‚é•A•¨ •Í "| ŽÀ OE± ‚͈Ȃ͈È'O‚©‚çˆê •" ‚Å•s ‚í ‚ê ‚Ä‚¢ ‚½ ‚ª,1993"N ‚É(Š")"ú ˆŸ‰» Šw•H‹AE‚ª •‚ •o-͂ňÀ‰¿ ‚ȕ•F LED‚ð ŠJ"-‚µ,‚» ‚Ì1"N OEã ‚© ‚ç•Ô•F ‚AE •Â•F ‚ÌLED‚ð Žg-p‚µ‚½•A•¨ •Í "| ŽÀ OE± ‚Ì "-•\ ‚ª 'Š ŽŸ‚¢ ‚¾1).‚» ‚µ‚Ä,‚² ‚-•Å‹ß ‚É‚È ‚èLD‚ð Žg-p‚µ‚½•A•¨ •Í "| ŽÀ OE± ‚ª Žn‚ß ‚ç‚ê ‚Ä‚¢ ‚é2). ‚±‚ê ‚ç‚Ì OEõ "¼"±'Ì 'f Žq‚Í •]-ˆ OEõ OE¹‚É"ä ‚× ‚Ä,(1)"-OEõ "g '· ‚ð ƒNƒ• ƒ• ƒt ƒBƒ‹ ‚Ì ‹zŽû ƒs•[ ƒN‚AE OEõ OE`'ÔOE`•¬‚Ì ‹-OEõ "½‰ž ‚Ì •ì-p ƒXƒy ƒNƒgƒ‹ ‚Ì ƒs•[ ƒN‚É‚Ù‚Úˆê 'v ‚³ ‚¹ ‚ç‚ê ‚é,(2)"M •ú ŽË‚ª ‚È‚¢,(3)•¬ OE^ OEy-Ê ‚Å‚ ‚é,(4)'· Žõ-½‚Å‚ ‚é,(5)'á "dˆ³ ‹ì "®‚Å‚ ‚é,(6)ƒp ƒ‹ ƒX•AEŽË‚ª ‰Â "\ ‚Å‚ ‚é,‚AE ‚¢ ‚¤-˜ "_‚ª ‚ ‚é.‚³ ‚ç ‚ÉLD‚Ì •ê • ‡ ‚Í •‚ OEø-¦,•‚ •o-Í,"d-¬ ‚Å '¼•Ú•Ï '² ‰Â "\ ‚AE‚¢ ‚¤-˜ "_ ‚ª ‰Á ‚í ‚é.LD‚Í-U "±•ú •o ‚É‚ae ‚é'• •• •E "-•U ‚AE ‚¢ ‚¤ ƒ• ƒJ ƒj ƒYƒ€ ‚ð-˜-p‚µ‚Ä‚¢ ‚邽‚ß,•ú •o OEõ‚͈ÊOEõ‚͈Ê'Š ‚ª ‚» ‚ë ‚Á‚Ä‚¨‚è‚Á‚Ä‚¨‚è,ƒR ƒq•[ ƒOE ƒ"ƒX(Š± •Â•«)‚ª •‚ ‚¢.‚» ‚Ì OE‹‰Ê,OEõ‚Í ‰s ‚¢ 'P •F•« ‚AEˆê‚AEˆê •û OEü •« ‚ð ‚à‚¿,•‚ ‚¢ •o-Í‚ð"¾‚é ‚± ‚AE ‚ª ‚Å‚« ‚é3). LD‚ÍDVD(Digital Versatile Disk)‚Ì OEõƒs ƒbƒNƒAƒb ƒv•" •ª ‚É•Ì-p ‚³ ‚ê ‚Ä‚¢ ‚é.DVD‚Í OE»•Ý,CD-ROM‚Ì •‚-§ "x"Å‚AE‚µ‚ÄˆÊ 'u •t ‚¯ ‚³ ‚ê ‚Ä‚¢ ‚邪,DVD-RAM‚à •¤ •i ‰» ‚ª OEˆ'è ‚³ ‚ê ‚Ä‚¨‚è‚Ä‚¨‚è,DVD-ROM‚ae ‚è•‚ •o-Í‚Ì LD‚ª •Ì-p ‚³ ‚ê ‚Ä‚¢ ‚é.‚± ‚Ì ‚ae ‚¤ ‚ÉLDŠJ "-‚Ì "®‚« ‚Í ‹} ‚Å‚ ‚è,OE» •Ý100mW‹ß ‚-‚Ì •o-Í‚Ì ‚à ‚Ì ‚ª ŠJ"-‚³ ‚ê ‚Â ‚‚ ‚é.DVD‚ª •L ‚-•• ‹y ‚· ‚ê ‚Î,LD‚Ì 'å •• ‚È ƒRƒX ƒg ƒ_ƒEƒ"‚ª •} ‚ç‚ê,-L-Í‚È•A•¨ •Í "|-p OEõ OE¹‚AE ‚È ‚é‰Â "\ •« ‚ª ‚ ‚é. •]-ˆ,•A •¨ ‚É"Á'è ‚Ì "g'· ‚Ì OEõ‚ð-^ ‚¦ ‚ÄOEõ • ‡ •¬ ‚È ‚Ç‚Ì "½ ‰ž ‚ð'² ‚× ‚é•ê • ‡ ‚É‚Í,'å ‚«‚È•ª OEõ Ší ‚ð-p ‚¢ ‚Ä•A•¨ ‚É•AEŽË ‚µ‚Ä‚¢ ‚½.‚µ ‚©‚µ ‚±‚Ì •û-@‚Å‚Í OEõ ‚ª Žã ‚-,•A •¨ ‚ðˆç •¬ ‚· ‚é ‚± ‚AE ‚ª •¢"ï ‚Å‚ ‚è,‚± ‚ê ‚Ü‚Å'P •FOEõ ‚ª •A•¨ 'Ì ‚Ì • ¶ ˆç ‚É 'Î ‚µ‚Ä ‚Ç‚Ì ‚ae‚¤‚È•ì-p ‚ð‹y ‚Ú‚· ‚©‚Í ‚ ‚Ü‚èOE¤ ‹ † ‚³ ‚ê ‚È‚© ‚Á‚½.‚± ‚ê ‚É'Î ‚µ‚ÄLED‚âLD‚Í,'P •FOEõ‚Å‚ ‚é ‚É ‚à ‚©‚©‚í ‚ç‚¸•‚炸•A•¨ ‚ðˆç •¬‚· ‚é ‚Ì ‚É•\ •ª ‚ÈOEõ-Ê ‚ð"¾‚é ‚± ‚AE ‚ª ‚Å‚« ‚é.