Relationship between the osmotic potential of cell sap and the water saturation deficit during the wilting of leaf tissue

1963 ◽  
Vol 5 (4) ◽  
pp. 258-264 ◽  
Author(s):  
Bohdan Slavík
Keyword(s):  
Osmotic Potential ◽  
Water Saturation ◽  
Leaf Tissue ◽  
Water Saturation Deficit ◽  
Saturation Deficit

scholarly journals CELL DAMAGE, WATER STATUS AND GAS EXCHANGES IN CASTOR BEAN AS AFFECTED BY CATIONIC COMPOSITION OF WATER

2019 ◽  
Vol 32 (2) ◽  
pp. 482-492
Author(s):  
GEOVANI SOARES DE LIMA ◽  
HANS RAJ GHEYI ◽  
REGINALDO GOMES NOBRE ◽  
LAURIANE ALMEIDA DOS ANJOS SOARES ◽  
JOÃO BATISTA DOS SANTOS
Keyword(s):  
Salt Stress ◽  
Irrigation Water ◽  
Castor Bean ◽  
Water Saturation ◽  
Water Status ◽  
Water Saturation Deficit ◽  
Gas Exchanges ◽  
Saturation Deficit ◽  
Cationic Composition ◽  
Bean Plants

ABSTRACT Castor bean is an oilseed crop which is able to adapt to various edaphoclimatic conditions and has considerable contents of oil in its seeds, with potential for use in the castor oil industry. In this context, this study aimed to evaluate changes in membrane damage, water status and gas exchanges in castor bean plants (cv. ‘BRS Energia’) in response to irrigation water salinity and cationic composition. Randomized blocks were used to test six cationic compositions (S1 - Control; S2 - Na+; S3 - Ca2+; S4 - Na+ + Ca2+; S5 - K+ and S6 - Na+ + Ca2+ + Mg2+), in four replicates. Plants in the control treatment were subjected to irrigation using water of low electrical conductivity (S1 - ECw = 0.6 dS m-1), whereas those in the other treatments were irrigated using 4.5 dS m-1 water prepared with different cations. Higher leaf succulence associated with lower water saturation deficit is an indication of tolerance to salt stress in castor bean plants irrigated with K+-rich water. The presence of Na+ in irrigation water caused the highest water saturation deficit in castor bean leaf blades. The lowest damage in cell membranes was observed in plants irrigated with Ca2+-rich water. The damaging effect of salt stress on castor bean gas exchanges depends on the cationic composition of water and occurred in the following order: Na+>Na++Ca2+>Ca2+> Na++Ca2++Mg2+>K+.

scholarly journals The effect of water saturation deficit on the volume of intercellular space in laeves

2015 ◽  
Vol 43 (4) ◽  
pp. 465-470 ◽  
Author(s):  
J. Czerski ◽  
A. Sosińska ◽  
Z. Kozłowska
Keyword(s):  
Nicotiana Tabacum ◽  
Vicia Faba ◽  
Beta Vulgaris ◽  
Plant Species ◽  
Intercellular Space ◽  
Water Saturation ◽  
Intercellular Spaces ◽  
Water Saturation Deficit ◽  
Saturation Deficit ◽  
Helichrysum Bracteatum

The volume of intercellular spaces in leaves at various stages of water saturation was determined by method of Czerski (1964, 1968). The investigation were performed with the following plant species: <i>Vicia faba</i> L., <i>Nicotiana tabacum</i> L. var. <i>rustica, Solarium tuberosum</i> L. var. Flisak, <i>Helichrysum bracteatum</i> Wild., <i>Bmssica napus</i> L. var. <i>oleifera, Beta vulgaris</i> L. var. <i>saccharifera</i>.

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