Plant Growth and Fruit Quality of Blueberry in a Controlled Room under Artificial Light

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  • Aung Thanda
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Muramatsu Yukinari
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Horiuchi Naomi
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Che Jingai
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Mochizuki Yuya
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Ogiwara Isao
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology Graduate School of Agriculture, Tokyo University of Agriculture and Technology

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  • 人工光型栽培室におけるブルーベリー樹の生育および果実品質の特性

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The purpose of this study was to clarify the plant growth and fruit quality of blueberry in a controlled room under artificial light. Cultivars used were a northern highbush ‘Blueray’, and two southern highbush, ‘Misty’ and ‘Sharpblue’. A comparative study was carried out of growth characteristics, photosynthetic potential and fruit quality analysis in different growing environments, in particular focusing on plants growing in a glasshouse under natural sunlight and plants in a controlled room under artificial light. Environmental conditions of the controlled room under artificial light were 15 to 25°C, 50 to 70% humidity, 150 to 350 μmol·m−2·s−1 light intensity, and a 10-hour photoperiod from the primary experiment. In these growing environments, normal fruits developed from all the tested cultivars by successful growth without decreasing plant vigor and leaf photosynthetic ability until fruit harvesting time compared to the cultivars grown in the glasshouse under natural sunlight condition. Moreover, it was confirmed that high-quality fruits could be harvested in a controlled environment to increase fruit production with high SSC % and high anthocyanin content but low acid % in ‘Blueray’ and ‘Misty’, but not ‘Sharpblue’. Finally, this report presents the possibility of high-quality blueberry production in a controlled environment under artificial light conditions with some cultivars.

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