Effect of Gibberellin and Cytokinin
number of side-shoots/plant (2.00) was obtained from plants treated with BA 500
ppm + GA 3 500 ppm (T 6 ).
Days required for flower bud initiation
The pooled effect showed that increasing the concentration of BA from 500 to
1000 ppm resulted earliness in flower bud initiation. GA 3 also followed the reverse
trend (Table 5). But the individual plant growth regulators showed statistically at
par effects with T 2 showed the earliest flower bud initiation (253.83 days). The
mixture of GA 3 and BA was found less effective like the control plants. T 6 treated
plants showed the most delayed effect (334.67 days).
Days required from flower bud initiation to spadix visible Stage
The effect exerted by the plant growth regulators on the days required for spadix
visible stage of anthurium was found to be statistically significant. Results proved
that growth regulators were non- effective regarding the earliness in flower
production (Table 5). Control plants reached the spadix visible stage earliest (32.83
days) followed by BA 1000 ppm (34.83 days). The rests were found moderately
effective except T 6 showed the most delayed effect (40.83 days) which was
statistically at par with BA 250 ppm + GA 3 250 ppm [T 5 (40.33 days)] treatment.
table 5: Effect of plant growth regulators on growth and flowering of anthurium
cv.Nitta
Days
Days
No. of
required
required
Days
Number
field-life
side-
for fBI-
treatments
for flower
for full
of flowers of flowers
shoots per
Spadix
bud
bloom
per plant
(days)
plant
visible
initiation
stage
t 0
3.33
283.00
32.83
5.83
2.83
28.83
t 1
4.50
276.50
39.50
5.83
3.17
26.50
t 2
5.67
253.83
34.83
6.00
3.17
24.67
t 3
4.83
263.17
39.50
6.33
3.33
33.17
t 4
3.67
279.17
36.50
6.50
2.83
30.00
t 5
2.83
284.00
40.33
6.17
2.50
36.00
t 6
2.00
334.67
40.83
7.50
1.50
23.50
S. Em ±
0.29
9.89
1.37
0.52
0.27
1.66
c.D. at 5%
0.85
28.87
3.99
N.S.
0.78
4.83
Int. J. Bioinformatics and Biological Sci.: v.2 n.1&2, p. 41-53. March & June 2014
49