חיפוש מתקדם
Journal of Experimental Botany
Yaniv, Z., Division of Medicinal and Spice Crops, A.R.O., The Volcani Centre, Bet Dagan 50250, Israel
Werker, E., Department of Botany, Hebrew University of Jerusalem, Jerusalem n, Israel
The response of the following species of the Solanaceae to water stress caused by polyethylene glycol (PEG) as an osmoticum, was examined: Solatium khasianum, S. laciniatum, S. melongena, S. nigrum, S. tuberosum, Capsicum annuum, Lycopersicon esculentum and Hyosciamus boveanus. Secretion of solution from the leaves was observed in these plants when put into 4.5% solution of PEG 1500, 4000 and 6000. Secretion of liquid started after 20 min in seedlings with mechanically damaged roots, and after 24 h in plants with intact roots. After evaporation of the liquid, deposits of white material which remained on the leaves were identified as PEG by high pressure liquid chromatography and by PEG induced protoplast fusion.All the species examined bear glandular and non-glandular hairs on their leaves. In species with leaves which are highly tomentous, PEG secretion took place mainly through the non-glandular hairs. In species with a small number of hairs, secretion took place through ordinary epidermal cells. Under similar conditions mannitol solution was secreted only through wounds and cracks, and NaCl solution was not secreted at all. © 1983 Oxford University Press.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Absorption and secretion of polyethylene glycol by solanaceous plants
34
Yaniv, Z., Division of Medicinal and Spice Crops, A.R.O., The Volcani Centre, Bet Dagan 50250, Israel
Werker, E., Department of Botany, Hebrew University of Jerusalem, Jerusalem n, Israel
Absorption and secretion of polyethylene glycol by solanaceous plants
The response of the following species of the Solanaceae to water stress caused by polyethylene glycol (PEG) as an osmoticum, was examined: Solatium khasianum, S. laciniatum, S. melongena, S. nigrum, S. tuberosum, Capsicum annuum, Lycopersicon esculentum and Hyosciamus boveanus. Secretion of solution from the leaves was observed in these plants when put into 4.5% solution of PEG 1500, 4000 and 6000. Secretion of liquid started after 20 min in seedlings with mechanically damaged roots, and after 24 h in plants with intact roots. After evaporation of the liquid, deposits of white material which remained on the leaves were identified as PEG by high pressure liquid chromatography and by PEG induced protoplast fusion.All the species examined bear glandular and non-glandular hairs on their leaves. In species with leaves which are highly tomentous, PEG secretion took place mainly through the non-glandular hairs. In species with a small number of hairs, secretion took place through ordinary epidermal cells. Under similar conditions mannitol solution was secreted only through wounds and cracks, and NaCl solution was not secreted at all. © 1983 Oxford University Press.
Scientific Publication
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