TY - JOUR
T1 - Effect of potassium nitrate on the production of ricinine by ricinus communis and its insecticidal activity against Spodoptera frugiperda
AU - Flores-Macías, Antonio
AU - Vela-Correa, Gilberto
AU - Rodríguez-Gamiño, Ma De Lourdes
AU - Akhtar, Yasmin
AU - Figueroa-Brito, Rodolfo
AU - Pérez-Moreno, Víctor
AU - Rico-Rodríguez, Miguel A.
AU - Ramos-López, Miguel A.
PY - 2016
Y1 - 2016
N2 - The effect of four nitrogen levels (KNO3: 5, 10, 15 and 20 meq L-1) on the production of ricinine was studied using a semi-hydroponic system. The insecticidal activity of methanolic extracts of Ricinus communis L. leaves against Spodoptera frugiperda Smith larvae was also tested. A dosage - response relationship showed strong positive correlation (R2 = 0.92, P ≤ 0.05) between the nitrogen concentration in the hydroponic solution and ricinine percentage in leaves. A strong correlation (R2 = 0.94, P ≤ 0.05) was also shown for nitrogen content in tissues and ricinine percentage. The use of nitrogen in the form of KNO3 increased the production of ricinine, and it also affected mortality of S. frugiperda larvae. LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively. Increased nitrogen concentration in the hydroponic solution associated with increments in leaf area and ricinine concentration. This indicates that nitrogen concentration can be manipulated to improve production of this alkaloid, and the extracts used for crop protection.
AB - The effect of four nitrogen levels (KNO3: 5, 10, 15 and 20 meq L-1) on the production of ricinine was studied using a semi-hydroponic system. The insecticidal activity of methanolic extracts of Ricinus communis L. leaves against Spodoptera frugiperda Smith larvae was also tested. A dosage - response relationship showed strong positive correlation (R2 = 0.92, P ≤ 0.05) between the nitrogen concentration in the hydroponic solution and ricinine percentage in leaves. A strong correlation (R2 = 0.94, P ≤ 0.05) was also shown for nitrogen content in tissues and ricinine percentage. The use of nitrogen in the form of KNO3 increased the production of ricinine, and it also affected mortality of S. frugiperda larvae. LC50 for ricine methanolic extracts of R. communis leaves on S. frugiperda were 13,469.12, 15,754.34, 16,046.11 and 18,155.75 mg mL-1 for nitrogen concentrations of 20, 15, 10 and 5 meq L-1 respectively. Increased nitrogen concentration in the hydroponic solution associated with increments in leaf area and ricinine concentration. This indicates that nitrogen concentration can be manipulated to improve production of this alkaloid, and the extracts used for crop protection.
KW - Hydroponic solution
KW - Nitrogen
KW - Ricinine
KW - Ricinus communis
KW - Spodoptera frugiperda
UR - http://www.scopus.com/inward/record.url?scp=84962728330&partnerID=8YFLogxK
M3 - Artículo
SN - 0187-7380
VL - 39
SP - 41
EP - 47
JO - Revista Fitotecnia Mexicana
JF - Revista Fitotecnia Mexicana
IS - 1
ER -