Influence of photoperiod, photosynthetic photon flux, and temperature on growth of Canary Island ivy

Karim H. Al-Juboory, David J. Williams, Robert M. Skirvin, Donald G. Bullock

Research output: Contribution to journalArticlepeer-review

Abstract

The effects of selected environmental factors [temperature, photosynthetic photon flux (PPF), and photoperiod] that contribute to optimal vegetative growth of Canary Island ivy (Hedera canariensis Willd.) were investigated. Experiments were conducted in growth chambers at constant day/night temperatures of 16 and 26 °C. The greatest number of leaves (6.1) and plant height (38.0 cm) were achieved with PPF of 210 μmol · m-2 · s-1 and an 8-hour photoperiod at 16 °C. The greatest branch number (3.9), leaf area (41.4 cm2) and leaf chlorophyll content (1.02 mg · cm-2) were achieved with a PPF of 210 μmol · m-2 · s-1 with a 12-hour photoperiod at 16 °C. Under normal greenhouse or field conditions, Canary Island ivy rarely branches; however, a PPF of 210 μmol · m-2 · s-1 also induced branching.

Original languageEnglish (US)
Pages (from-to)237-239
Number of pages3
JournalHortScience
Volume33
Issue number2
StatePublished - 1998

Keywords

  • Apical dominance
  • Axillary bud break
  • Chlorophyll
  • Hedera canariensis Willd.
  • Lateral branching
  • Leaf area

ASJC Scopus subject areas

  • Horticulture
  • Plant Science

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