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http://dx.doi.org/10.12791/KSBEC.2016.25.4.294

Effect of Seedling Quality and Growth after Transplanting of Korean Melon Nursed under LED light Sources and Intensity  

Lee, Ji Eun (Seongju Korean Melon Fruit Vegetable Research Institute, Gyeongsangbuk-do Agricultural Research & Extension Services)
Shin, Yong Seub (Seongju Korean Melon Fruit Vegetable Research Institute, Gyeongsangbuk-do Agricultural Research & Extension Services)
Do, Han Woo (Seongju Korean Melon Fruit Vegetable Research Institute, Gyeongsangbuk-do Agricultural Research & Extension Services)
Cheung, Jong Do (Seongju Korean Melon Fruit Vegetable Research Institute, Gyeongsangbuk-do Agricultural Research & Extension Services)
Kang, Young Hwa (Deparment of Horticultural science, Kyungpook National University)
Publication Information
Journal of Bio-Environment Control / v.25, no.4, 2016 , pp. 294-301 More about this Journal
Abstract
This study was conducted to analyze the seedling quality of korean melon and the growth after transplanting of korean melon nursed under the LED sources. LED sources were RB7 (Red:Blue=14:2), RB3 (Red:Blue=12:4) and Blue(B=16). Photosynthetic photon flux density(PPFD) was 50, 100 and $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$. The lighting treatment was started after graft-taken and was applied for 20 days at 4 hours(05:30 and 07:30, 17:30 and 19:30) per day. Plant height and stem diameter of scion were longer and thicker under a high ratio of blue light condition. Dry matter ratio and compactness were highest in RB3 compared to the other LED sources treatments. $CO_2$ exchange rate increased $5.44{\mu}molCO_2{\cdot}m^{-2}{\cdot}s^{-1}$ under RB7 $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ and dropped to negative values under control. PPFD $200{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ of RB3 resulted in the longest plant height by 132.3cm and flowering ratio also was the highest by 75%.
Keywords
supplemental lighting; photosynthetic photon flux density (PPFD);
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