Effects of Mineral Nutrition on Endogenous Cytokinins in Plants of Sunflower (Helianthus annuus L.)

摘要: The effects of inorganic nutrients on the levels endogenous cytokinins in plants sunflower (Helianthus annuus L.) grown sand culture were studied. Low nitrogen resulted rapid decreases extracted from leaves, buds, roots, and root exudates. Similar observed with phosphorus deficiency, but potassium deficiency cytokinin content leaves was less marked. higher supplied as nitrate than those ammonium sulphate or nitrate. decline derooted shoots detached could be reversed by supplying them nutrient solution. Although intact may normally dependent upon supply isolated have capacity for production when nutrients.