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ACIAR CSE 2009-037 - Improved rice establishment in Cambodia and Australia – Geoff Beecher
Salinity tolerance of Australian rice
Sam North, Don Griffin
Unravelling the interaction of salinity, climate and soil on cultivar tolerance
Activity 6.2 - ACIAR CSE 2009-037
Objectives� Determine salinity tolerance of Australian rice cultivars� Determine bay water salinity thresholds to inform crop
management
Research program� 2010/11 – field trial - bay water salinity thresholds
� 2011/12 – glasshouse – relative salinity tolerance
� 2012 to 2014 – district and glasshouse trials
Photo taken 18 March 2011
2.0
fresh
3.0
2.0fresh
3.0
2.5
1.5
fresh
2.5
2.0
3.0
3.0
2.5
fresh
2.0
2.5
1.5
1.5
1.5
6
8
10
12
14
Amaroo Sherpa
Season average bay water salinity (dS/m)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
6
8
10
12
14
Reiziq Illabong
Gra
in y
ield
(t/
ha)
6
8
10
12
14
Quest Doongarah
Grain yield
Rate R2 P
-1.1 0.50 0.005
-1.0 0.62 0.002
-0.8 0.22 0.09
-0.6 0.26 0.037
-0.3 0.1 0.24
0.0 0 0.99
Glasshouse – salinity from PI on Experiment 1 Experiment 2
plant
yield
plant
pan
pan
seeds
seed
g
plant
yield
plant
pan
pan
seeds
seed
g
Amaroo sig sig Doongarah sig Illabong sig sig sig sig Quest Reiziq sig sig sig Sherpa sig sig sig sig Opus sig sig Langi sig sig YRF 209 sig YRW 4 sig sig sig sig IR 45427 (tolerant) sig sig sig IR 58 (sensitive) sig sig IR 29 (sensitive) sig sig Sen Pidao sig IR 66
Trial 1
-30
-25
-20
-15
-10
-5
0
5
10
15
Amaroo
Quest
DoongarahYRF 209Reiziq
IR 58O
pusLangi
IR 45427SherpaYRW
4Illabong
Dif
fere
nce
in
se
ed
s p
er
pa
nic
le
5% LSD = 12
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
Amaroo
Quest
DoongarahYRF 209Reiziq
IR 58O
pusLangi
IR 45427SherpaYRW
4Illabong
Dif
fere
nce
in
10
00
gra
in w
eig
hts
(g
)
5% LSD = 0.84
Seeds per panicle
1000 grain weight
Stomatal resistance
Reiziq
R2 = 0.256
R2 = 0.8496
0.00
0.50
1.00
1.50
2.00
2.50
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Vapour pressure deficit
Fresh
Saline
Amaroo
R2 = 0.8367
R2 = 0.60660.00
0.50
1.00
1.50
2.00
2.50
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Vapour pressure deficit
Fresh
Saline
IR 45427
R2 = 0.3341
R2 = 0.39340.00
0.50
1.00
1.50
2.00
2.50
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Vapour pressure deficit
Fresh
Saline
IR 58
R2 = 0.6638
R2 = 0.51370.00
0.50
1.00
1.50
2.00
2.50
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Vapour pressure deficit
Fresh
Saline
Sodium exclusion
0.0
0.5
1.0
1.5
2.0
Amaroo Doongarah Illabong Quest Reiziq Sherpa
Na:
K r
atio
fresh3 dS/m
0.0
0.5
1.0
1.5
2.0
IR58 IR45427 Amaroo Doongarah Sherpa Rieziq Quest Illabong
Na:
K r
atio
FreshSaline
0.0
0.5
1.0
1.5
2.0
IR58 IR45427 Amaroo Doongarah YRF 209 YRW 4
Na:
K r
atio
FreshSalineTrial 3
Trial 4
2010-11 Field trial
Saline/sodic groundwater + rice = trouble(if not managed appropriately)
-10
10
30
50
70
90
110
130
150
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Time (hours)
Cu
mu
lati
ve in
filt
rati
on
(m
m)
FreshFresh1.5 dS/m2 dS/m2.5 dS/m2.5 dS/m3 dS/m3 dS/m