Abstract
The thick fleshy tap roots of the biennial forest herb Smyrnium perfoliatum L. (Apiaceae) are characterized by excessive development of vascular parenchyma. Numerous starch grains are deposited mainly in phloem parenchyma cells and in rays. Schizogenous secretory cavities, surrounded by epithelial cells were observed in the phelloderm and in secondary phloem. High values of shoot:root ratio (6.78), specific leaf area (56.83 m2 kg−1), leaf weight ratio (0.221 g g−1) and quite high root respiration rate (0.444 mg CO2 kg−1 s−1) during growing season confirm that Smyrnium perfoliatum is a fast growing species. Decrease of the content of sucrose, proteins, and starch and an increase of reducing sugars in the root during ontogenesis were observed.
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Abbreviations
- RD :
-
root respiration rate
- SLA:
-
specific leaf area
- LAR:
-
leaf area ratio
- LWR:
-
leaf weight ratio
- RWR:
-
root weight ratio.
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© 1995 Springer Science+Business Media Dordrecht
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Lux, A., Masarovicova, E., Olah, R. (1995). Structural and physiological characteristics of the tap root of Smyrnium perfoliatum L. (Apiaceae). In: Baluška, F., Čiamporová, M., Gašparíková, O., Barlow, P.W. (eds) Structure and Function of Roots. Developments in Plant and Soil Sciences, vol 58. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-3101-0_12
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DOI: https://doi.org/10.1007/978-94-017-3101-0_12
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