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Red/far-red photon flux ratio used as an index number for morphological control of plant growth under artificial lighting conditions
被引:2
|作者:
Murakami, K
[1
]
Aiga, I
[1
]
Horaguchi, K
[1
]
Morita, M
[1
]
机构:
[1] Univ Osaka Prefecture, Ctr Res & Dev Bioresources, Sakai, Osaka 593, Japan
来源:
关键词:
phytochrome photoequilibrium;
wave band;
sunflower;
metal halide lamp;
fluorescent lamp;
D O I:
10.17660/ActaHortic.1997.418.18
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
The red/far-red (R/FR) photon flux ratio is an important index of morphological control of plant growth. Both 600-700/700-800nm and 655-665/725-735nm have been used as definitions for R/FR. In our research, these two definitions were tested comparing the growth of sunflowers using 3-band+FR fluorescent lamps and metal halide lamps at the same of R/FR and photosynthetic photon flux density. The ratio, 600-700/700-800nm, was a better index for morphological characteristics. Plant shape and morphological characteristics were surprisingly similar in spite of the different spectral distributions.
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页码:135 / 140
页数:6
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