Work

Vegetative Growth and Flowering of Pot Chrysanthemums in Response to Supplemental HPS Radiation and Split-night Temperatures

Year: 1984

Type: article

Abstract: Chrysanthemum X morifolium Ramat. cvs. Yellow Paragon and Copper Ann, when grown as pot plants, produced more flowering stem breaks and greater flower weight in crops planted in January and February (spring) than in those grown under similar greenhouse conditions in October and November (fall). Spring crops also showed longer vegetative dry weight, shorter stem breaks, and earlier flower development. Supplemental high-pressure sodium (HPS) irradiation resulted in a larger increase in flower weight and number of flowering breaks in the fall than in the spring. Flower development was hastened by HPS irradiation only in the fall. Split-night temperatures did not delay flowering and resulted in a relatively small reduction in flower weight and number of flowering breaks in the spring. Unacceptable delays and degradation of flower quality occurred with this treatment in the fall and HPS was only partly successful in restoring acceptable quality and time to harvest.

Source: Journal of the American Society for Horticultural Science

DOI: 10.21273/jashs.109.1.30

Authors: P. R. Hicklenton, K. B. McRae

Institution: Agriculture and Agri-Food Canada

Language: English

Topic: Flowering Plant Growth and Cultivation

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,500