著者

遠山 隆文 石井 征亜 禿 泰雄 岡部 勝美

出版者

一般社団法人 植物化学調節学会

雑誌

植物の生長調節 (ISSN:13465406)

巻号頁・発行日

vol.36, no.2, pp.202-207, 2001-11-30 (Released:2017-09-29)

参考文献数

16

被引用文献数

2

著者

石井 征亜 山崎 敬亮

出版者

Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

雑誌

生物環境調節 (ISSN:05824087)

巻号頁・発行日

vol.40, no.2, pp.207-213, 2002-06-30 (Released:2010-06-22)

参考文献数

11

被引用文献数

3 1

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Photon flux (PF) in the spectral regions of 300-400 nm (UV), 400-500 nm (B), 500-600 nm (G), 600-700 nm (R) and 700-800 nm (Fr) were observed almost daily with a spectroradiometer (LI-1800) at noon in from Jan. 2000 to Mar. 2001 at Gifu (lat. 35°25' N and long. 136°46' E) . The spectral ratio of B/photosynthetic photon flux (PPF) and R/PPF on clear days changed reversibly during the morning and in the evening; variability was less during the daytime. Whereas G/PPF was almost constant during the whole studies period irrespective of fine or cloudy weather. The B/PPF ratio increased rapidly from 24.6% on the winter solstice to 27.1% on the vernal equinox. After reaching a peak of 27.3% on the first day of autumn, it decreased gradually from the autumnal equinox to the winter solstice. The seasonal changes in R/PPF showed opposite tendencies for B/PPF. This cycle of spectral photon flux probably assists plants in making a distinction between spring and autumn season. We found that the PPF as well as UV, B, G, R and Fr values were nealy equal in vernal equinox and autumnal equinox. The R/PPF ratio for the fine days was high and B/PPF was low in comparison with the cloudy days.

著者

禿 泰雄 石井 征亜 山崎 敬亮 遠山 隆文 岡部 勝美

出版者

一般社団法人 植物化学調節学会

雑誌

植物の化学調節 (ISSN:03889130)

巻号頁・発行日

vol.35, no.2, pp.228, 2000-12-25 (Released:2018-03-15)

著者

遠山 隆文 石井 征亜 禿 泰雄 岡部 勝美

出版者

植物化学調節学会

雑誌

植物の生長調節 = Regulation of plant growth & development (ISSN:13465406)

巻号頁・発行日

vol.36, no.2, pp.202-207, 2001-11-30

被引用文献数

2