Abstract
Explants excised from strawberry (Fragaria x ananassa Duch.) plantlets were cultured in vitro for 21 days on half-strength MS (Murashige & Skoog 1962) basal liquid medium with 20 g l-1 sucrose and without sugar in the vessels capped with gas permeable microporous polypropylene film. The experiments were conducted under CO2 nonenriched (350–450 μmol mol-1 in the culture room) and CO2 enriched (2,000 μmol mol-1 during the photoperiod in the culture room) conditions with a PPF (photosynthetic photon flux) of 200 μmol m-2 s-1. The CO2 concentration in the vessels decreased to approximately 200 μmol mol-1 during the photoperiod on day 21 under CO2 nonenriched conditions. The fresh and dry weight, net photosynthetic rate (NPR) per plantlet, NPR per g leaf fresh weight, NPR per g leaf dry weight, the number of unfolded leaves, and ion uptake of PO4 3-, NO3 -, Ca2+, Mg2+ and K+ on day 21 were the greatest under photoautotrophic (no sugar in the medium) and CO2 enriched conditions. The residual percent of PO4 3- was 3% on day 21 under photoautotrophic and CO2 enriched conditions.
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Abbreviations
- MS:
-
Murashige & Skoog (1962) basal medium composition
- NPR:
-
net photosynthetic rate
- PPF:
-
photosynthetic photon flux
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Kozai, T., Iwabuchi, K., Watanabe, K. et al. Photoautotrophic and photomixotrophic growth of strawberry plantlets in vitro and changes in nutrient composition of the medium. Plant Cell Tiss Organ Cult 25, 107–115 (1991). https://doi.org/10.1007/BF00042181
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DOI: https://doi.org/10.1007/BF00042181