The research work was conducted to study the effect of GA 3 on growth and yield of cabbage. Single factor experiment consisted of four concentrations of GA 3 , viz., 0, 25, 50 and 75 ppm. Significantly the minimum number of days to head formation (43.54 days) and maturity (69.95 days) was recorded with 50 ppm GA 3 and 50 ppm GA 3 gave the highest diameter (23.81 cm) of cabbage head while the lowest diameter (17.89 cm) of cabbage head was found in control (0 ppm GA 3 ) treatment. The application of different concentrations of GA 3 as influenced independently on the growth and yield of cabbage. Significantly the highest yield (45.22 kg/plot and 104.66 t/ha) was found from 50 ppm GA 3 .
The study was conducted to assess the influence of BAP and NAA on in vitro plantlet regeneration of local and exotic banana cultivars. Shoot tip of the cultivars Grand Naine, Amritasagar and Sabri were used as explants for establishment of culture. Different concentrations of BAP (1.0, 2.0, 3.0, 4.0, 5.0 and 6.0 mg/L) were used in MS medium to study their effects on shoot formation. Explants of all the cultivars produced both single and multiple shoots but rate of shoot regeneration varied among different cultivars and BAP concentrations. The highest shoot regeneration was found in all the three cultivars at 5.0 mg/L of BAP. Among the three banana cultivars Grand Naine produced the highest shoot. Shoot proliferation rate of Grand Naine, Amritasagar and Sabri was 3.50, 3.25 and 1.75 (per explant) respectively was obtained after 30 days of culture. MS medium supplemented with different concentrations of NAA (0.5, 1.0, 2.0, 4.0 and 6.0 mg/L) were used for in vitro root formation from proliferated shoots. The cultivars Grand Naine showed the best root forming performance in all concentrations of NAA. Best results of root formation were observed on MS medium supplemented with 4.0 mg/L NAA. All the plantlets regenerated in vitro from shoot tip explants of three banana cultivars survived in the field condition but Grand Naine showed the superior performance.
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