On the physiology of yield production in carrots. Implications for breeding towards nutrient efficiency

cal callo callus caracteres de rendimiento carotte carrots citoquininas composante de rendement cultivo de tejidos culture de tissu cytokinine cytokinins daucus carota fisiologia vegetal fitomejoramiento genotipos genotypes nutrition des plantes plant breeding plant growth substances plant nutrition plant physiology sustancias de crecimiento vegetal temperatura temperature tissue culture variedades varieties yield components zanahoria