Table 1 Effects of exogenous ABA on the shoot morphological parameters of five treatment time course in the presence of salinity.

From: Physiological mechanisms of ABA-induced salinity tolerance in leaves and roots of rice

Shoot morphological index

Treatments

Duration of salt stress (days)

2

4

6

8

10

Plant height (cm)

Q0

23.68 ± 0.39a

26.67 ± 0.32a

29.39 ± 0.32a

31.15 ± 0.30a

31.65 ± 0.29a

Q1

21.91 ± 0.29b

25.05 ± 0.31b

25.33 ± 0.27b

25.52 ± 0.24bc

27.94 ± 0.41b

Q2

21.14 ± 0.37b

24.90 ± 0.48b

25.15 ± 0.60b

25.98 ± 0.37b

26.03 ± 0.38c

Q3

22.04 ± 0.38b

25.27 ± 0.21b

25.35 ± 0.25b

24.89 ± 0.16c

26.70 ± 0.44c

Z0

26.03 ± 0.23b

29.68 ± 0.58a

31.23 ± 0.38a

30.35 ± 0.30a

31.08 ± 0.38a

Z1

27.22 ± 0.24a

28.53 ± 0.35ab

28.70 ± 0.34b

29.66 ± 0.55a

31.36 ± 0.45a

Z2

23.05 ± 0.74d

26.83 ± 0.39c

27.14 ± 0.36c

27.42 ± 0.28b

27.48 ± 0.38b

Z3

25.04 ± 0.22c

27.27 ± 0.37bc

27.33 ± 0.37c

27.79 ± 0.25b

28.18 ± 0.69b

Stem diameter (mm)

Q0

1.99 ± 0.02ab

2.92 ± 0.07a

3.28 ± 0.06a

3.38 ± 0.07a

3.49 ± 0.13a

Q1

2.01 ± 0.02ab

2.69 ± 0.06b

2.71 ± 0.04bc

3.29 ± 0.05ab

3.38 ± 0.06ab

Q2

1.93 ± 0.03b

2.86 ± 0.06ab

2.68 ± 0.07c

3.11 ± 0.08b

3.13 ± 0.11b

Q3

2.03 ± 0.03a

2.98 ± 0.06a

2.89 ± 0.06b

3.27 ± 0.08ab

3.32 ± 0.10ab

Z0

2.14 ± 0.06a

2.84 ± 0.05a

2.60 ± 0.05a

3.37 ± 0.08a

3.43 ± 0.10a

Z1

2.11 ± 0.07a

2.81 ± 0.10a

2.66 ± 0.08a

3.26 ± 0.05a

3.46 ± 0.06a

Z2

1.90 ± 0.05b

2.51 ± 0.09b

2.53 ± 0.08a

2.69 ± 0.08b

2.95 ± 0.09b

Z3

2.03 ± 0.07ab

2.83 ± 0.09a

2.67 ± 0.07a

3.29 ± 0.09a

3.29 ± 0.08a

Leaf length (mm)

Q0

117.33 ± 3.23ab

240.89 ± 6.47a

230.40 ± 8.30a

225.67 ± 6.62a

167.13 ± 5.36a

Q1

110.50 ± 2.71b

184.13 ± 8.60b

152.30 ± 4.51b

237.00 ± 4.58a

158.10 ± 7.25ab

Q2

116.45 ± 3.47ab

199.20 ± 7.95b

221.33 ± 5.78a

228.88 ± 7.21a

148.20 ± 4.68b

Q3

127.40 ± 4.16a

190.50 ± 9.61b

226.75 ± 5.64a

236.70 ± 6.26a

160.30 ± 4.99ab

Z0

108.64 ± 3.56b

163.88 ± 5.59a

166.60 ± 6.35b

214.71 ± 10.20a

144.25 ± 7.97a

Z1

111.05 ± 2.31b

165.38 ± 8.95a

220.00 ± 11.72a

225.50 ± 14.56a

152.40 ± 6.59a

Z2

101.67 ± 5.85b

156.50 ± 15.09a

160.00 ± 9.70b

165.33 ± 9.78b

101.38 ± 5.63b

Z3

162.80 ± 16.11a

174.00 ± 8.16a

182.67 ± 8.01b

201.67 ± 11.64a

145.30 ± 7.31a

Leaf area (mm2)

Q0

354.18 ± 15.78b

812.53 ± 32.58a

590.76 ± 20.75ab

537.22 ± 28.81b

519.03 ± 58.24b

Q1

391.68 ± 18.18b

759.70 ± 15.67a

512.69 ± 32.00c

585.81 ± 27.87b

450.26 ± 37.04b

Q2

343.76 ± 22.20b

785.36 ± 30.41a

544.78 ± 19.65bc

541.04 ± 28.02b

527.14 ± 45.86b

Q3

516.75 ± 13.69a

804.70 ± 15.12a

641.71 ± 24.24a

679.68 ± 25.80a

762.19 ± 18.41a

Z0

270.11 ± 12.04b

431.37 ± 21.95a

384.21 ± 30.69a

338.56 ± 24.36b

180.63 ± 11.94b

Z1

319.12 ± 17.56a

577.13 ± 27.69b

369.91 ± 38.19a

417.58 ± 29.39a

198.28 ± 10.02b

Z2

292.42 ± 2.65ab

422.95 ± 63.31b

254.74 ± 12.57b

203.23 ± 19.63c

118.42 ± 12.96c

Z3

309.42 ± 8.88ab

570.83 ± 30.20a

331.33 ± 19.70ab

436.36 ± 21.79a

347.08 ± 26.29a

  1. Q0 treatment of water, Q1 treatment with ABA, Q2 treatment with NaCl, Q3 treatment with ABA + NaCl in Chaoyouqianhao. Z0 treatment of water, Z1 treatment with ABA, Z2 treatment with NaCl, Z3 treatment with ABA + NaCl in Huanghuazhan. Datas are mean ± standard error of at least four replicates. Within each column, different letters indicate significant difference at the five percent significant level according to Duncan's multiple range tests.
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