Transcript Hossain, M.A. - World Bamboo Organization

Clonal Propagation of Bambusa vulgaris Schrad
ex wendl by Leafy Branch Cuttings
M. A. Hossain
University of Chittagong, Bangladesh
Korea University, Korea
Bamboos in Bangladesh
33 Species: 7 wild species in forests
26 domesticated
Bambusa vulgaris (Baijja Bansh): most
widely used bamboo species in rural
Bangladesh
Widely used in
Building construction
House making
Agricultural implements
Fishing traps
Improvised bridge on small canel
Making household products
Bambusa vulgaris groove
Propagation methods..
 Do not set seed after flowering, no seedling progeny
 Propagate only through Vegetative methods
1. Rhizome cutting
Low survival rate
Bulkiness of (20-30Kg) of rhizomes
Expensive option
Rhizome cutting
Propagation methods..
2. Pre-rooted branch cutting
Easiest method
Limited only to wet seasons
Very few branches develop root at their base
(Banik,1997 )
Propagation methods..
3. Secondary branch cutting
Hossain et al. J. Bamboo and Rattan, 2005, 4 (3), 231–241
Propagation methods..
4. Primary and Secondary branch cutting
Hossain et al., J. Bamboo and Rattan, 2006, 5 (3&4),117-126
Convenient
The numbers of suitable branches (>5mm dia.) to produced root are inadequate.
Limited only to rainy season during June-July.
Propagation by Leafy Branch Cuttings
Regeneration from leafy brunch cuttings
- Nodal leafy cuttings
- Tip cuttings
Effect of IBA on rooting ability of leafy branch cuttings
- 0%, 0.1%, 0.4% and 0.8% IBA Solution
Experimental procedure
Nodal leafy cuttings
Propagule ready
for planting
Tip cuttings
Propagules in nursery bed
(6 months old )
Non-mist propagator
Cutlings in polybag
(2 months)
4-6 weeks
Rooted cuttings
Results..
Rooting percentage
Nodal leafy cuttings
70
Tip cuttings
Rooting percentage
60
c
c
cd
d
40
30
b
b
50
a
e
20
10
0
0%
0.1%
0.4%
IBA concentrations
0.8%
Results..
Root number
Nodal leafy cuttings
12
a
Tip cuttings
Root number
10
b
b
8
c
Nodal leafy cuttings
bc
c
6
4
d
e
2
0
0%
0.1%
0.4%
0.8%
IBA concentration
Tip cuttings
Results..
Root length
Cutting types
IBA concentration
0.8%
p
0%
0.1%
0.4%
Nodal leafy
cuttings
10.1±0.41 a
13.9±0.95 a
14.0±0.74 a
12.8±2.03 a NS
Tip cuttings
10.2±0.70 a
12.1±2.09 a
12.0±1.68 a
9.9±0.44 a
NS
Tip cuttings
Results..
Survival percentage
Nodal Leafy cuttings
100
Nodal leafy cuttings
Survival percentage
Tip cuttings
ab
abc
90
bcd
80
a
bcd
cd
d
70
60
50
0%
0.1%
0.4%
IBA concentration
0.8%
a
Results..
Growth performance
Nodal leafy cuttings
Tip cuttings
Summary of findings
Nodal leafy cutting and tip cuttings, both produced roots,
survived and formed rhizome.
The highest rooting percentage and root number per cutting
was in 0.8% IBA treated cuttings.
IBA treated cuttings showed better survival capacity in the
nursery condition over controlled one.
The result presented here could help in opening a new avenue
for the mass propagation of this variety bamboo species.
Further aspects
The rooting percentage of leafy branch cuttings of B.
vulgaris in this study was 56. There is scope to increase
the rooting ability of cuttings of the species.
Furthermore, the performance of planting stock
developed through the methods was not assessed in
field condition. This might be one of the important
aspects for future study.
Acknowledgement
International organizing committee of WBC
University of Chittagong, Bangladesh
Korea University, Korea
Bangladesh Forest Research Institute
Thank You