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：
THIRD INTERNATIONAL SYMPOSIUM ON ARTIFICIAL LIGHTING IN HORTICULTURE | 1997年 / 418期
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.
引用
收藏
页码：135 / 140
页数：6
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