Table 3 Final seed germination percentage (GP) and mean emergence time (MGT) and germination index (GI) before transplanting at 15 days after sowing of four holy basil varieties by seed priming with KNO3, under different LED light treatments; white (W), monochromic red (R), green (G) and blue (B) in the PFAL system.

From: Promotion of seed germination and early plant growth by KNO3 and light spectra in Ocimum tenuiflorum using a plant factory

KNO3 concentration

Light treatment

Seed germination (%)

G-NT

G-TS

R-JT

R-TS

0%

W

55.5 ± 7.50

63.0 ± 4.93

47.0 ± 4.80

81.5 ± 1.71

R

73.5 ± 2.36

65.5 ± 3.77

65.0 ± 7.37

80.0 ± 1.15

G

69.0 ± 2.89

57.0 ± 4.20

57.5 ± 6.70

77.0 ± 3.42

B

61.5 ± 5.12

52.0 ± 3.16

52.5 ± 4.99

79.0 ± 3.70

Significance

 

ns

ns

ns

ns

0.4%

W

71.5 ± 4.92

56.5 ± 2.87

55.5 ± 3.20ab

76.5 ± 5.12

R

62.5 ± 3.59

58.5 ± 2.06

51.5 ± 5.19bc

82.0 ± 2.16

G

59.5 ± 9.32

63.0 ± 5.45

67.5 ± 3.86a

78.0 ± 2.71

B

62.5 ± 4.50

60.0 ± .2.94

40.5 ± 4.35c

81.0 ± 2.08

Significance

 

ns

ns

*

ns

KNO3 concentration

Light treatment

Mean germination time (day)

G-NT

G-TS

R-JT

R-TS

0%

W

6.0 ± 0.29a

6.1 ± 0.52a

6.1 ± 0.27a

6.18 ± 0.23a

R

5.9 ± 0.07a

6.0 ± 0.13a

5.7 ± 0.18a

5.47 ± 0.18b

G

5.2 ± 0.15b

4.7 ± 0.14b

4.4 ± 0.16b

5.21 ± 0.3b

B

5.2 ± 0.21b

5.4 ± 0.26ab

5.7 ± 0.56a

5.23 ± 0.12b

Significance

 

*

*

*

*

0.4%

W

7.8 ± 0.78a

6.2 ± 0.61a

5.4 ± 0.15

5.87 ± 0.19a

R

5.2 ± 0.20b

6.3 ± 0.22a

5.3 ± 0.24

5.18 ± 0.09ab

G

4.6 ± 0.25b

4.9 ± 0.11b

5.2 ± 0.62

5.5 ± 0.62ab

B

5.0 ± 0.19b

4.9 ± 0.32b

6.7 ± 0.53

4.7 ± 0.03b

Significance

 

*

*

ns

*

KNO3 concentration

Light treatment

Germination index

G-NT

G-TS

R-JT

R-TS

0%

W

20.5 ± 0.54

21.4 ± 0.99

20.7 ± 0.55

21.7 ± 0.45

R

20.7 ± 0.19

19.9 ± 0.42

20.3 ± 0.60

22.2 ± 0.25

G

21.8 ± 0.70

20.4 ± 0.50

20.8 ± 0.87

22.1 ± 0.44

B

21.3 ± 0.44

20.8 ± 0.57

22.9 ± 0.89

23.0 ± 0.45

Significance

 

ns

ns

ns

ns

0.4%

W

23.8 ± 1.26

20.4 ± 0.36

20.7 ± 0.27

21.7 ± 0.74

R

20.4 ± 0.40

19.5 ± 0.32

19.5 ± 0.32

23.0 ± 0.58

G

21.0 ± 1.38

21.5 ± 0.68

21.9 ± 0.86

22.8 ± 1.06

B

22.0 ± 0.58

21.6 ± 1.12

21.8 ± 0.86

23.8 ± 0.67

Significance

 

ns

ns

ns

ns

  1. Data are mean values ± SE (n = 4) with four fifty seeds in a replication. Different letters in the same column indicate significant difference at p < 0.05. * indicates significant difference. “ns” indicates no significant difference.
Back to article page