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Table 2 Effect of inoculation with selected isolates of endophytic diazotrophic bacteria from highland rice landraces on the length growth parameters of commercial jasmine rice cultivar Khao Dawk Mali 105 grown in greenhouse

From: Promoting plant growth in a commercial rice cultivar by endophytic diazotrophic bacteria isolated from rice landraces

StrainΦ

Days after inoculation

GR ratio

Root length (cm)Ψ

Shoot length (cm)Ψ

7

35

GR

7

35

GR

PR1

13.59 ± 0.25c

40.59 ± 0.68a

0.96

5.78 ± 0.05b

11.15 ± 0.22a

0.19

5.02

PR5

11.37 ± 0.16f

34.46 ± 1.17bc

0.82

4.78 ± 0.11cd

11.25 ± 0.52a

0.27

3.40

PS5

12.28 ± 0.13e

38.39 ± 1.51abc

0.93

5.45 ± 0.12b

11.99 ± 0.41a

0.27

2.93

TR4

14.39 ± 0.30b

36.48 ± 1.19abc

0.79

7.05 ± 0.04a

12.53 ± 0.55a

0.23

3.57

TS1

13.69 ± 0.49bc

34.85 ± 0.33bc

0.76

4.51 ± 0.29d

11.17 ± 0.36a

0.25

3.14

RR3

12.43 ± 0.24de

33.83 ± 0.90c

0.76

4.49 ± 0.29d

11.11 ± 0.70a

0.23

3.99

SR6

13.16 ± 0.29cd

39.02 ± 0.80ab

0.92

5.51 ± 0.11b

12.11 ± 0.41a

0.21

4.69

SS2

16.19 ± 0.24a

38.10 ± 2.72abc

0.78

4.49 ± 0.23d

11.97 ± 0.20a

0.20

4.03

SS5

13.19 ± 0.22cd

35.69 ± 2.27bc

0.80

4.57 ± 0.16d

12.01 ± 0.30a

0.26

3.31

SS6

13.40 ± 0.18c

34.61 ± 1.82bc

0.76

5.26 ± 0.15bc

11.60 ± 0.65a

0.24

3.18

Control

13.31 ± 0.14c

21.71 ± 0.48d

0.30

4.57 ± 0.21b

11.44 ± 0.28a

0.23

2.91

% CV

4.44

6.91

 

8.14

6.20

  
  1. ΦEndopytic diazotrophic bacterial strain; ΨFresh root and shoot length was measured at 7 and 35 Days after inoculated by endopytic diazotrophic bacterial; GR, The growth rate; GR ratio, the mean of GR root : shoot ratio
  2. Values are means ± standard error (SE) of three experiments, each experiment had 10 plants for each treatment after 7 days growth and 5 plants for each treatment after 35 days growth. Means in a column followed by the same superscript letter (a, b, c, d, e, f) are not statistically different from each other as determined by DMRT (p≤0.05). Coefficient of variation (%CV) is the percentage of the mean represented by the standard deviation