Journalartikel

Jahr der Veröffentlichung: 1985

Seiten: 157-165

Zeitschrift: Flora

Bandnummer: 177

Heftnummer: 3-4

ISSN: 0367-2530

eISSN: 1618-0585

Verlag: Elsevier

Abstract: 
Plants of Avicennia germinans were grown at NaCl-concentrations from 0 to 0.3 M in a greenhouse in soil or hydroponic culture. From these plants the anatomy and salt secretion of pilose leaves were compared with those lacking non-glandular hairs on the lower epidermis. Anatomically, on hairless leaves a thicker spongy tissue, a thicker spongy tissue, a thicker lower epidermis, a lower number of hairs/mm2 in the upper epidermis, and a higher number of stomata/mm2 are observed. Plants, grown without NaCl, develop poorly, and produce very thin leaves. Leaves secrete salt through the upper and lower epidermis, regardless of the salinity of the growth conditions. However, in the presence of NaCl in the culture medium mainly NaCl is secreted, while in the absence of NaCl an increasing Ca++-secretion can be observed. Additionally, salt secretion increases with increasing NaCl in the growth medium. The total amount of salt lost is minor in hairless leaves than in pilose ones, due to respective differences in salt secretion of the lower epidermis, provided the plants were cultured at identical salt conditions. Salt secretion of hairless leaves is nearly the same during day and night.

Harvard-Zitierstil: SCHNETTER, M. (1985) INVESTIGATIONS ON SALT SECRETION OF THE LEAVES OF AVICENNIA-GERMINANS (L) L, Flora, 177(3-4), pp. 157-165

APA-Zitierstil: SCHNETTER, M. (1985). INVESTIGATIONS ON SALT SECRETION OF THE LEAVES OF AVICENNIA-GERMINANS (L) L. Flora. 177(3-4), 157-165.