Influence of Photoperiod and Plant Weight on Tuber Production byPotamogeton pectinatusL
| Autor: | Gregory G. Ksander, Frederick J. Ryan, David F. Spencer, Wim van Vierssen |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
photoperiodism
endocrine system biology fungi food and beverages Greenhouse Biomass Aquatic Science biology.organism_classification Protein content Pigment Horticulture Agronomy visual_art visual_art.visual_art_medium Potamogeton Pectinatus reproductive and urinary physiology hormones hormone substitutes and hormone antagonists Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Freshwater Ecology. 8:1-11 |
| ISSN: | 2156-6941 0270-5060 |
| DOI: | 10.1080/02705060.1993.9664718 |
| Popis: | Potamogeton pectinatus L., grown in greenhouse cultures, was harvested from three photoperiod treatments (16 h, 10 h, and 16 h switched to 10 h after four weeks) at weekly intervals. Plant weight increased over time, and those plants grown at a 16 h photoperiod showed the greatest increase. Plants began to produce tubers after 70 to 77 days at all photoperiods. Plants grown at the 16 h photoperiod and those initially grown at 16 h and switched to the 10 h photoperiod allocated less biomass to new tubers (ca. 5%) than those grown at the 10 h photoperiod (ca. 30%). Plants grown at the 10 h photoperiod had decreased weights of stems and leaves. Plants grown at the long photoperiod produced tubers after attaining dry weights between 0.8 and 1.0 g. Plants grown at the short photoperiods produced tubers regardless of plant weight, but the frequency of tuber production increased for larger plants. Changes in the pigment and protein content of leaves were not associated with the onset of tuber production. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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