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

页码：135 / 140

页数：6