INCREASED PHOSPHORUS MITIGATES THE ADVERSE EFFECTS OF SALINITY IN TISSUE CULTURE

Autor:	Monther Mohumad Tahat, Rida A. Shibli, J. S. Sawwan, Ihsan Q. Swaidat
Rok vydání:	2001
Předmět:	Osmotic concentration Phosphorus Sodium Potassium Soil Science chemistry.chemical_element Salinity Animal science Nutrient chemistry Dry weight Botany Shoot Agronomy and Crop Science
Zdroj:	Communications in Soil Science and Plant Analysis. 32:429-440
ISSN:	1532-2416 0010-3624
DOI:	10.1081/css-100103019
Popis:	Interactive effects of increased phosphorus (P) with salinity were studied at the microculture level of African violet (Saintpaulia ionantha). Increased P from 0.5 to 2.0 mM in the medium was very effective to mitigate the adverse effects of increased NaCl salinity (0.0, 50, 75, 100 mM). Growth (shoot height, and dry mass) was significantly reduced with increased salinity, whereas increasing P improved growth with elevated salt concentrations. Leaf osmolarity was decreased (more negative) with salinity effect and it was increased (less negative) by P treatments. Percent ash was increased with salinity and it was not highly affected by P. Root number and root length were significantly reduced with increased salinity and improved with increased P. The percentage of shoot content of nitrogen (N), P, calcium (Ca), potassium (K), and magnesium (Mg) were reduced with elevated salinity level and this reduction was less as P concentration increased in the medium. Sodium (Na) was significantly increased with impos...
Databáze:	OpenAIRE
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