紅藍綠LED光源對萵苣與蘭花的生長與發育之影響

鄭智航

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紅藍綠LED光源對萵苣與蘭花的生長與發育之影響

Effects of Red, Blue and Green Light-emitting Diodes on The Growth and Development of Lettuce and Orchid

鄭智航 , Masters　　Advisor：羅朝村　　

繁體中文

病害防治；生長；發育；發光二極體；光質； Anthracnose disease ； Development ； Growth ； Light-emitting Diode ； Light quality

Abstract │ Reference (104) │ Altmetrics

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In this study, effect of different light sources including red (R), blue (B) and green light-emitting diode (LED) lights on the growth and development of lettuce (Lactuasativa L. var. crispa L.), orchid (Phalaenopsis amabilis) and disease resistant of Chinese cabbage (Brassica rapa chinensis), were evaluated. In lettuce test, photosynthetic photon flux (PPF), photoperiod, and air temperature (light/dark) was conducted to 400 μmol/m2/s, 20 hr, and 28/25 ℃ under different light sources such as, R 70% + B 30% (LED, 7R3B), R 52.5% + B 22.5% + G 25% (LED, RGB) and R 52.5% + B 22.5% + G 25% (LED+ fluorescent, RBFL1), and a white fluorescent lamp (FL, as a control) in growth chamber. The results indicated that the fresh weights of shoots and roots, number of leaf, soluble sugars and total polyphenol compounds of lettuce treated with RGB were significantly increased as compared with control light. However, the nitrate contents of lettuce was decreased, compared to that in the white fluorescent lamp control. In anthracnose disease of Chinese cabbage study under a similar light sources treatment except photoperiod of 16 hr, the mycelium growth of the pathogen treated with RGB was inhibited. The disease severity anthracnose disease caused by Colletotrichum higginsianum of Chinese cabbage treated with RGB were reduced as compared to treated with FL. In orchid study, PPF, photoperiod, and air temperature (light/dark) of orchid growth period was used as 120 and 100 μmol/m2/s1, 12 hr, and 31/28℃, respectively. But, flower-stalk and flowering period was conducted as 120 and 100 μmol/m2/s, 8 hr, and 25/18℃ under 8R2B, 7R3B, 6R4B and a white fluorescent lamp (FL, as a control) in growth chamber. The growth percentage of leaf length, leaf width and leaf number of three kinds of orchid cultivars treated only with the FL (120 μmol/m2/s) could be increased over 20% and 75%, respectively. However, the flower-stalk length of orchid treated with 7R3B (100 μmol/m2/s) was the longest among all treatments. Similarly, the percentage of flower-stalk emergence and bloom of orchid under 7R3B treatment were highest as compared to other LED-treatments, There was the most flower number per stalk of orchid treated with FL (120 μmol/m2/s). The average flower number per stalk of three cultivar orchids was 7.73.

Reference ( 104 ) 〈TOP〉

王慧媛，2010。環境控制下波士頓萵苣兩階段立體化栽培模式之探討。國立臺灣大學生農學院生物產業機電工程學系碩士論文。p5-16
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李哖、林菁敏. 1984. 溫度對白花蝴蝶蘭生長與開花之影響。中國園藝 20:223-231。
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