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PHYSIOLOGICAL INVESTIGATIONS ON ALARIA ESCULENTA (L.) GREV. (LAMINARIALES). I. ELONGATION OF THE BLADE 1, 2, 3
Author(s) -
Buggeln Richard G.
Publication year - 1974
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1974.tb02715.x
Subject(s) - elongation , biology , photoperiodism , chromosomal translocation , botany , stipe (mycology) , zoology , biochemistry , materials science , ultimate tensile strength , metallurgy , gene
SUMMARY A seasonal rhythm in blade elongation rate was observed in Alaria esculenta. Maximum (3.0–3.6 cm/week) and minimum (0.5–1.0 cm/week) rates were recorded in June and September, respectively. Translocation of growth‐promoting metabolites occurs within the main blade and between the sporophylls and blade. Bidirectional flow of growth‐promoting metabolities within the stipe was demonstrated. Seasonal effects of nutrients (NO 3 ‐ and PO 4 3‐ ) and photoperiod on blade elongation were shown in long‐term laboratory experiments. Control of seasonal blade growth by exogenous and endogenous factors is discussed.