Abstract:
Two field experiments were conducted at the Horticulture Farm of Sher-e-Bangla
Agricultural University, Dhaka during the period from March-2019 to February-
(both Kharif and Rabi seasons) to study the rooting from different portion of stem cutting
of croton (Codiaeum variegatum) using different plant growth regulators. The experiment
consisted of two factors, and followed Randomized Complete Block design (RCBD) with
three replications. Factor A. Different portion of stem cuttings denoted as C:C
=basal
portion of the stem, C
2
=middle portion of the stem, C
=top portion of the stem, and factor
B: Plant growth regulators denoted as S:S
ii
0
3
=control, S
=IBA (indole-3-butyric acid)
@500 ppm and S
2
1
= NAA (1-naphthaleneacetic acid)@1000 ppm. All of the studied
parameters were significantly influenced by different cutting positions. The C
portion of
stem cuttings had the highest sprouting percentage (98.22 and 95.78%), roots per cutting
(8.44 and 4.47), root lengths (5.03 and 2.73 cm), and shoot lengths (11.59 and 8.84 cm)
in both Kharif and Rabi seasons, while C
portion of stem cutting had the lowest
performance of the aforesaid parameters. In the case of different plant growth regulators,
S
treatment had the highest sprouting percentages (90.22 and 85.78%), roots per cutting
(7.40 and 3.91), root length (4.93 and 2.67 cm), and shoot length (11.44 cm) among the
various plant growth regulators applied in both Kharif and Rabi seasons. Therefore, it
may be concluded that C
S
treatment was better than all other treatments recording the
maximum values of various attributes related to the shoot and root growth parameters of
croton cuttings during both Kharif and Rabi seasons.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
In partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
HORTICULTURE
