The effects of gibberellins, cytokinins and potassium nitrate on the development of `Rangpur'lime (Citrus limonia Osbeck) rootstocks were studied. Seeds from ripe fruits were washed, dried and stored at 4 - 5o C for 60 days. They were planted in nursery plots in May/1993 and when the seedlings had 10 - 20 cm height, they were transplanted to a second nursery stage. The seedlings were sprayed at 15-day intervals, with plant regulators and potassium nitrate, after reaching the age of 8 months. From January to March/1993, the seedlings were sprayed with: 25, 50 and 75 ppm of GA3; 25, 50 and 75 ppm of GA4+7 + phenylmethyl-aminepurine; 20 ppm of phenylmethylpyranil-aminepurine; 0.2% of KNO3. The seedlings planted in May/1993 did not reach earlier suitable size for budding when compared to the control. The treatments with KNO3 0.2% showed a tendency to inhibit the seedling growth.
plant regulators; seedlings; Citrus limonia
