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Growth and mineral composition of grape-vine rootstock cultured in vitro with different levels of ammonium nitrate

AutorTroncoso de Arce, Antonio ; Villegas Monter, Ángel; Mazuelos Vela, Carmen ; Cantos, Manuel
Palabras claveGrape-vine
In vitro culture
Nitrogen nutrition
Fecha de publicación1990
EditorKluwer Academic Publishers
CitaciónDevelopments in Plant and Soil Sciences
Plant Nutrition - Physiology and Applications 41: 653-654 (1990)
ResumenGrowth and mineral composition of grape-vine explants (13.3 EVEX rootstock) cultured on a basal medium with 10.4 mM of NO;, and respective additions of 5, 10, 15, 20 and 25 mM of NH4N03 were analysed. Low N-availability (10.4 mM) induced low shoot formation. Addition of NH4N03 up to 15 mM increased number, quality and N levels of shoots. Further increase of N in the medium induced very high contents of N and water in tissues, and led to abad shoot quality (large and abnormally shaped leaves and dark colour-fragile tissues, difficult to handle in further propagations). The content of K in explants was negatively affected by the concentration of NH4N03 in the substrate and by the level of N in tissues.
Descripción2 pages, 2 tables, 3 references. Content D: Fertilizer application in relation to yield formation and quality characteristics. Proceedidngs of the XI International Plant Nutrition Colloquium. The Netherlands 30 july-4 august 1989.
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