Effects of Diethyl Aminoethyl Hexanoate on Nutrient Uptake and Physiological Indexse of Cyphomandra betacea Seedlings

PurposeTo study the effects of different mass concentrations of diethyl aminoethyl hexanoate (DA-6) on the nutrient uptake and physiological indexse of Cyphomandra betacea seedlings, with a view to screening the optimal DA-6 mass concentration for the nutrient uptake and physiological regulation of C. betacea seedlings.

MethodsC. betacea seedlings were sprayed with different mass concentrations of DA-6 (10, 20, 30 and 40 mg/L), to analyse the nutrient uptake and physiological indexse of C. betacea seedlings.

ResultsDifferent mass concentrations of DA-6 were able to significantly increase the total nitrogen (N) and total phosphorus (P) content of C. betacea seedlings, and the total potassium (K) content was increased at 20 and 30 mg/L DA-6 treatments; under 30 mg/L DA-6 treatment, compared with the control, the total N, P and K contents in roots of C. betacea seedlings were increased 50.19%, 44.76% and 18.61%, respectively; the total N, P and K contents in aboveground parts of C. betacea seedlings increased 43.12%, 30.11% and 39.08%, respectively. When the mass concentration of DA-6 was 30 mg/L, compared with the control, the single plant biomass of both root and aboveground parts of C. betacea seedlings reached the maximum of 0.216 g and 0.847 g, respectively; the content of photosynthetic pigments, SOD activity, CAT activity, and soluble protein content were significantly higher; but the POD activity was significantly lower than that of the control, decreased by 61.82%.

ConclusionsDA-6 can promote the nutrient uptake and physiological regulation of C. betacea seedlings, and the optimum DA-6 mass concentration is 30 mg/L.