| |
| Author(s): | Warrington, I. J.;
Mitchell, K. J. |
|---|
| Author Affiliation: | Div. of Pl. Physiol., DSIR, Palmerston North, New Zealand |
|---|
| Title: | The influence of blue- and red-biased light spectra on the growth and development of plants |
|---|
| Source: | Agricultural Meteorology. Vol. 16, No. 2, 1976, p. 247-262. |
|---|
| Keywords: | TIC Keywords: Light; Lolium perenne; Trifolium repens
|
|---|
| Geographic Terms: | New Zealand |
|---|
| Abstract/Contents: | The various lighting systems used for studies of plant growth in controlled environment systems differed markedly in the proportions of blue and red waveband light emitted in the visible spectrum, depending both on the types of lamp chosen and on the proportions of each lamp type used. A series of new high-intensity lamp systems, which provided wide variations in blue:red waveband ratios were used to test, at different irradiance levels, the effects of these different light spectra on the growth of sorghum, soyabean, perennial ryegrass and white clover. The biased spectral treatments used resulted in marked differences in DM accumulation, affected the relative proportions of leaves and stems and influenced tiller and secondary stem development. Final shoot dry weight and plant height were increased approximately 2-fold and leaf area was increased 46% with sorghum under the red-biased compared with blue-biased conditions at the low irradiance level tested. Blue-biased conditions also enhanced the concentrations of amino acids (particularly aspartic and glutamic acids) and protein whereas, in contrast, red-biased sources increased the concentrations of soluble sugars and starch in the leaf tissue. The implications of these results to controlled-environment studies are discussed. |
|---|
| Language: | English |
|---|
| References: | 24 |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Warrington, I. J., and K. J. Mitchell. 1976. The influence of blue- and red-biased light spectra on the growth and development of plants. Agric. Meteorol. 16(2):p. 247-262. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=4895 |
| If there are problems with this record, send us feedback about record 4895. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: S 600 .A34 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
