| 5 different concentrations of PBO solution were sprayed on the leaves of Ficus carica Linn, and the effect on the growth
and fecundity of F. carica Linn was studied. The results showed that PBO had significant effect on the growth of fruit branches. After treated by PBO, the growth potential of F. carica Linn decreased significantly, the branches turned thinner, internode length was shorter,leaf width and petiole length decreased, leaf thickness and weight increased. The effect of control branches was more obvious with the increase of PBO concentration when it was between 50~200 mg/L, and the treatment effect was no longer increase when the concentration increased to 250 mg/L. The application of PBO could significantly improve the cold resistance of F. carica Linn, reduce the disease harm and fruit shape index, increase fruit hardness and soluble solids content, but the single fruit weight changed little. The yield increased more obvious after spraying 200~250 mg/L PBO. In conclusion, the suitable concentration on F. carica Linn was about 200 mg/L. |
