509 Pb 257 Spectral Filters and Growing Season Influence Growth and Carbohydrate Metabolism of Chrysanthemum
Year: 1994
Type: article
Abstract: The interaction of light quality and growing season on growth and carbohydrate metabolism of chrysanthemum was evaluated using 6% CuSO 4 and water as spectral filters. Light transmitted through the CuSO 4 filter significantly reduced plant height and internode length compared to control plants regardless of the season. Light transmitted through CuSO 4 filters delayed flowering. Total number of flowers was not affected but plants grown under CuSO 4 filter had smaller flowers than those grown under the control filter. Light transmitted through CuSO 4 filter reduced leaf and stem soluble sugar and starch concentrations regardless of the growing season. However, me magnitude of reduction was greater in spring than in fall-grown plants. Stems of fall-grown plants had mom starch deposition than spring-grown plants under both filters. The reduction of leaf and stem carbohydrate content (per organ basis) was greater than that of concentrations due to reduced stem elongation and total dry matter accumulation. Filters with specific spectral characteristics can be used as alternative means of controlling height and producing compact plants in the greenhouses regardless of the growing season. However, flowering should be evaluated with individual flower crops as flowering response may interact with the quality of light and growing season.
Source: HortScience
Authors: Nihal C. Rajapakse, John W. Kelly
Language: English
Topic: Light effects on plants
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2580486064