赤色光／遠赤色光比の異なる光環境が高温条件下で生育するチンゲンサイ成型苗の伸長に及ぼす影響

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献5件 参考文献4件

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タイトル別名
  • Effect of Light Quality with Different Red/Far-red Photon Flux Density Ratio on Elongation of Pak-choi Seedlings Grown under High Temperatures.
  • セキショクコウ エンセキショクコウヒ ノ コトナル コウカンキョウ ガ コウオン ジョウケン カ デ セイイク スル チンゲンサイ セイケイ ナエ ノ シンチョウ ニ オヨボス エイキョウ

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The effect of red(R) to far-red(FR) photon flux density ratio in transparent light on the growth of pak-choi under high temperature was examined to test if stem elongation of seedlings can be controlled. Experiments were conducted under three light conditions using films with differing R/FR ratios ; transparent film and films with low transparency for red and far-red light (reduced red light and reduced far-red light, respectively). The R/FR ratio (600-700nm/700-800nm) was 1.05 in the transparent film, 0.67 in the reduced red light film, and 1.66 in the reduced far-red light film. Stem lengths of pak-choi seedlings exposed to 29°/25°C (day/night) were significantly shorter under reduced far-red light and significantly longer under reduced red light than those grown under transparent film. Leaf width did not differ between the transparent film and reduced far-red light but that under reduced red light was significantly narrower. Our results indicate that stem lengths of pak-choi seedlings can be controlled, even under high temperature conditions, by using covering them with material which increase the R/FR ratio under natural light.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 70 (6), 774-776, 2001

    一般社団法人　園芸学会

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