Dynamics of Macro- and Micronutrients in Cuphea

• Published in: Journal of plant nutrition Vol. 32; no. 7-9; pp. 1383 - 1406
• Main Authors: Jaradat, Abdullah, Rinke, Jana
• Format: Journal Article
• Language: English
• Published: Philadelphia, NJ Taylor & Francis Group 22.07.2009; Taylor & Francis
• Subjects: Agronomy. Soil science and plant productions; barium; Biological and medical sciences; boron; calcium; chemical constituents of plants; copper; Cuphea; Cuphea lanceolata; Cuphea viscosissima; developmental stages; Economic plant physiology; embryo (plant); Fundamental and applied biological sciences. Psychology; genetic variation; glacial soils; homeostasis; hybrids; iron; leaves; magnesium; manganese; Metabolism; Metabolism. Physicochemical requirements; nutrient density; nutrient homeostasis; nutrient requirements; nutrient transport; nutrient uptake; Nutrition. Photosynthesis. Respiration. Metabolism; oil crop; phosphorus; plant micronutrients; plant nutrition; Plant physiology and development; potassium; seeds; selenium; sodium; strontium; sulfur; temporal variation; translocation (plant physiology); zinc; Minnesota; Macronutrient(mineral); Dynamic characteristic; Homeostasis; nutrient density; Inorganic element; Density; Lythraceae; oil crop; Plant nutrition; Dicotyledones; Angiospermae; Nutrient; Spermatophyta; Trace element (nutrient); nutrient homeostasis; Oil plant (vegetal); Cuphea
• ISSN: 0190-4167; 1532-4087
• DOI: 10.1080/01904160903007901

Temporal dynamics of nutrient densities, their interrelationships, and remobilization from leaves to seeds of cuphea were quantified in growth chamber and field studies. Temporal nutrient densities in leaf samples exhibited large levels of variation, whether remobilized and largely accumulated in the seed [copper, (Cu), potassium (K), phosphorus (P), sulfur (S) and zinc (Zn)], remobilized and accumulated in the seed coat [boron (B), calcium (Ca), iron (Fe), magnesium (Mg), manganese (Mn), and sodium (Na)] or almost excluded from the seed [barium (Ba), selenium (Se) and strontium (Sr)]. The temporal seed-to-leaf nutrient density “[S]/[L]” ratios and the proportion of variance unique to each nutrient separated the nutrients into a group (Cu, Fe, S, and Zn) with large [S]/[L] ratios and large unique variances, and another group (B, Ca, Mg, Mn and Sr) with small [S]/[L] ratios and small unique variances; the first group was selectively stored in the developing embryo. Nutrients with large densities in leaves at harvest may constitute a resource potentially available for subsequent crops.