Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.
Ananas comosus (Image: W. Stuppy, RBG Kew)
This species has Orthodox seeds - dry to 15-20% eRH and store at -20ºC, or as cool as possible.
Based on other members of the family BROMELIACEAE, some researchers have described the seeds of this species as Physiologically Dormant.
This type of dormancy can be overcome by mimicking the seasonal patterns of the species' native habitat. Use a moist pre-chill or pre-heat treatment (depending on local climatic conditions) or a dry after-ripening treatment, before germinating the seeds on agar, germination paper or sand at their optimum temperature. The seeds are hard and slow to germinate: try treating them with sulphuric acid before sowing.
If germination is low, you perform delicate surgery to enable the embryo to grow. Excise the tissue near the root tip.
(Image: W. Stuppy, RBG Kew)
See another image of this species at VIRBOGA (The Virtual Botanic Garden).
Accepted name: Ananas comosus (L.) Merr.
Synonyms: Bromelia comosa L., Ananas sativus Lindl.
Common name: pineapple
References and Links
- Food and Agriculture Organization of the United Nations and International Plant Genetic Resources Institute (1994). Genebank Standards. FAO/IPGRI, Rome, Italy.
- Morton, J.F. (ed) (1987). Fruits of Warm Climates. Florida, USA.
- AFPD (African Flowering Plants Database) - Conservatoire et Jardin Botaniques de la Ville de Genève, Switzerland, and South African National Biodiversity Institute, Pretoria, RSA: Ananas comosus.
- PROTAbase (Plant Resources of Tropical Africa) - Wageningen, Netherlands: Ananas comosus.
- SID (Seed Information Database) - Royal Botanic Gardens, Kew, UK: Ananas comosus.
- Tropicos - Missouri Botanical Garden, USA: Ananas comosus.