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Does Putrescine Effect on Growth, Yield and Chemical Composition of Cotton Plants Grown under Saline...
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Does Putrescine Effect on Growth, Yield and Chemical Composition of Cotton Plants Grown under Saline Soil Conditions? Introduction Material and Methods Selected Reference Aim of Study Conclusion The objective of this study was to investigate mitigation effect of putrescine (Put) on growth, yield, and chemical constitutes of Egyptian cotton (Gossypium barbadense L. cv. Giza 90) plants under different salinity stress conditions. -The Pots (40*40 cm) experiment was carried out in the wire house of Fac. Agric., Cairo Uni., Giza, Egypt, during the two successive seasons (2011 and 2012) with six replicates. -Before sowing cotton, different concentrations (Control ‘C’ 0, 3000, 6000 and 9000ppm) of salt mixture (2 NaCl: 2 CaCl 2 : 1 MgSO 4 ) were added into soil (1 clay: 1 sand) for each pot. -Three different doses of putrescine (Control ‘C’ 0, 1 and 2 ppm) were sprayed eight times started at 45 days after planting (DAP) (29 th March) and repeated every 15 days. -Samples were taken at 100 DAP in two seasons, and the yield after 210 & 230 DAP (2 picks) were taken. -Determinations of K, Proline were carried out on the dry material and total Chlorophylls on fresh material. Spraying putrescine 2 ppm was significantly increased the growth characters and yield of cotton plants under the absence or presence of different soil salinity levels. Gill, S.S. and Tuteja, N. (2010). Polyamines and abiotic stress tolerance in plants. Plant Signaling & Behavior, 5(1): 26–33. Results The results indicated that there is an decrease in leaf area per plant, shoot dry weight, K, and Total chlorophylls, while proline was increased, but spraying of Put increased leaf area per plant, shoot dry weight, K, and Total chlorophylls, while proline was decreased under natural and salinity soil conditions as Figures (1, 2, 3, 4, 5, 6, and 7). A.H. Hanafy Ahmed, E. Darwish, and M.G. Alobaidy Dep. Agric. Bot., Plant Physiol. Division, Fac. Agric., Cairo Uni., Giza, Egypt 0 2 4 6 8 10 12 14 16 18 20 C 3000 6000 9000 Leaf area (100cm 2 ) Salinity levels (PPM) Figure 1 0 2 4 6 8 10 12 14 16 18 20 C 3000 6000 9000 Shoot dry weight (g) Salinity levels (PPM) Figure 2 0 2 4 6 8 10 12 14 C 3000 6000 9000 No. of total bolls Salinity levels (PPM) Figure 3 0 0.5 1 1.5 2 2.5 3 C 3000 6000 9000 Boll weight (g) Salinity levels (PPM) Figure 4 0 0.5 1 1.5 2 C 3000 6000 9000 Total chl. (mg/g F.W) Salinity Levels (PPM) Figure 5 0 1 2 3 4 C 3000 6000 9000 K percentage (%) Salinity Levels (PPM) Figure 6 • Cotton known as the ‘King of fibre’ and called as the ‘White Gold’ is a major world fibre crop. In past it was accounted as main source of Egyptian economy. • Salinity inhibits plant growth and productivity. • Evidences showed that polyamines are involved in many physiological processes of plants, such as cell growth and development and respond to stress tolerance to various environmental factors (Gill and Tuteja, 2010). 0 0.5 1 1.5 2 C 3000 6000 9000 Proline (mg/g D.W) Salinity Levels (PPM) Figure 7 C: 0 PPM Put 1 PPM Put 2 PPM
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Cotton known as the ‘King of fibre’ and called as the ‘White Gold’ is a major world fibre crop. In past it was accounted as main source of Egyptian economy.•Salinity inhibits plant growth and productivity.•Evidences showed that polyamines are involved in many physiological processes of plants, such as cell growth and development and respond to stress tolerance to various environmental factors (Gill and Tuteja, 2010).
Transcript of Does Putrescine Effect on Growth, Yield and Chemical Composition of Cotton Plants Grown under Saline...
Does Putrescine Effect on Growth, Yield and Chemical Composition of Cotton Plants Grown under Saline Soil Conditions?
Introduction
Material and Methods
Selected Reference
Aim of Study
Conclusion
The objective of this study was to investigate mitigation effect
of putrescine (Put) on growth, yield, and chemical constitutes
of Egyptian cotton (Gossypium barbadense L. cv. Giza 90)
plants under different salinity stress conditions.
-The Pots (40*40 cm) experiment was carried out in the wire
house of Fac. Agric., Cairo Uni., Giza, Egypt, during the two
successive seasons (2011 and 2012) with six replicates.
-Before sowing cotton, different concentrations (Control ‘C’ 0,
3000, 6000 and 9000ppm) of salt mixture (2 NaCl: 2 CaCl2: 1
MgSO4) were added into soil (1 clay: 1 sand) for each pot.
-Three different doses of putrescine (Control ‘C’ 0, 1 and 2
ppm) were sprayed eight times started at 45 days after planting
(DAP) (29thMarch) and repeated every 15 days.
-Samples were taken at 100 DAP in two seasons, and the yield
after 210 & 230 DAP (2 picks) were taken.
-Determinations of K, Proline were carried out on the dry
material and total Chlorophylls on fresh material.
Spraying putrescine 2 ppm was significantly increased the
growth characters and yield of cotton plants under the absence
or presence of different soil salinity levels.
Gill, S.S. and Tuteja, N. (2010). Polyamines and abiotic stress
tolerance in plants. Plant Signaling & Behavior, 5(1): 26–33.
Results
The results indicated that there is an decrease in leaf area per
plant, shoot dry weight, K, and Total chlorophylls, while proline
was increased, but spraying of Put increased leaf area per
plant, shoot dry weight, K, and Total chlorophylls, while proline
was decreased under natural and salinity soil conditions as
Figures (1, 2, 3, 4, 5, 6, and 7).
A.H. Hanafy Ahmed, E. Darwish, and M.G. Alobaidy Dep. Agric. Bot., Plant Physiol. Division, Fac. Agric., Cairo Uni., Giza, Egypt
0
2
4
6
8
10
12
14
16
18
20
C 3000 6000 9000
Leaf
are
a (1
00
cm2)
Salinity levels (PPM)
Figure 1
0
2
4
6
8
10
12
14
16
18
20
C 3000 6000 9000
Sho
ot
dry
we
igh
t (g
)
Salinity levels (PPM)
Figure 2
0
2
4
6
8
10
12
14
C 3000 6000 9000
No
. of
tota
l bo
lls
Salinity levels (PPM)
Figure 3
0
0.5
1
1.5
2
2.5
3
C 3000 6000 9000
Bo
ll w
eig
ht
(g)
Salinity levels (PPM)
Figure 4
0
0.5
1
1.5
2
C 3000 6000 9000
Tota
l ch
l. (
mg
/g F
.W)
Salinity Levels (PPM)
Figure 5
0
1
2
3
4
C 3000 6000 9000K
pe
rce
nta
ge (
%)
Salinity Levels (PPM)
Figure 6
• Cotton known as the ‘King of fibre’ and called as the ‘White
Gold’ is a major world fibre crop. In past it was accounted as
main source of Egyptian economy.
• Salinity inhibits plant growth and productivity.
• Evidences showed that polyamines are involved in many
physiological processes of plants, such as cell growth and
development and respond to stress tolerance to various
environmental factors (Gill and Tuteja, 2010).
0
0.5
1
1.5
2
C 3000 6000 9000
Pro
line
(m
g/g
D.W
)
Salinity Levels (PPM)
Figure 7
C: 0 PPM
Put 1 PPM
Put 2 PPM
