DETERMINING THE AMOUNT OF PHOSPHORUS (P) ABSORBED BY ROOTS, AND THE REST OF THE SUNFLOWER (HELIANTHUS ANNUUS) SEEDLINGS IN THE FIRST DAYS OF GERMINATION, FROM KNOPP NUTRIENT SOLUTION

In this research, seedlings introduced in the absorption medium were not immersed in the solution used as substrate as a whole but separately the roots and in other flasks the part of the seedling above the hypocotyl that is from the basis of the radicle upwards, comprising the shoot. The determinat...

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Published in:Studia Universitatis "Vasile Goldiș". Seria ș̦tiințele vieții 2013-07, Vol.23 (3), p.395
Main Authors: Rusu, Andreea Ioana, Aredelean, Aurel, Turcus, Violeta
Format: Article
Language:English
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Summary:In this research, seedlings introduced in the absorption medium were not immersed in the solution used as substrate as a whole but separately the roots and in other flasks the part of the seedling above the hypocotyl that is from the basis of the radicle upwards, comprising the shoot. The determinations of the absorption of P in the seedling was done assessing the amount of P, respectively of phosphate remaining in the solution after the plant material was kept in the solution for 1 hour and the amount of P that penetrated the organs and eventually extracted from tissues or organs of seedlings was not determined. The method for determining the P from the Knopp medium, remaining after seedling organ removal was done by standard procedure EN ISO 6878 which came into effect in August 2008, imposed by current law in our country, for assessments of phosphorus in water.
ISSN:1584-2363
1842-7963