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Table 1 Effects of cold shock germination parameters of maize at 7 days after germination initiation

From: Variations in growth and genetic properties of Zea mays L. germinants exposed to cold shock

Parameters

Control

0.5 h

1.5 h

3 h

6 h

12 h

p value

Length of prominent root (mm)

141.8a

107.2b

91.4b

97.2b

104.4b

108.2b

0.054

Length of prominent leaf (mm)

100.6a

83.6b

62.6b

83.4b

85.5b

76.2b

0.128

Length of sheath (mm)

46.2a

45.6a

31.6a

46.3a

46.6a

48.8a

0.302

Number of roots b

6a

9a

8a

7a

7a

7a

0.429

Height (mm)

78.6a

67.7bc

52.3c

76.6ab

66.9bc

65.8c

<0.001

Chlorophyll content (CCI)

3.7a

4.8a

6.9a

5.3a

5.6a

4.7a

0.082

Wet weight of root (g)

0.08a

0.06a

0.07a

0.08a

0.07a

0.04a

0.128

Wet weight of seedling (g)

0.24a

0.25a

0.16a

0.19a

0.22a

0.21a

0.219

Wet weight of leaf (g)

0.15a

0.15a

0.09a

0.25a

0.19a

0.14a

0.256

Wet weight of seed (g)

0.17a

0.26a

0.12a

0.23a

0.2a

0.22a

0.186

Dry weight of root (g)

0.04a

0.07a

0.05a

0.04a

0.06a

0.07a

0.267

Dry weight of seedling (g)

0.05a

0.05a

0.06a

0.07a

0.05a

0.06a

0.142

Dry weight of leaf (g)

0.04a

0.06a

0.08a

0.06a

0.06a

0.05a

0.464

Dry weight of seed (g)

0.11a

0.11a

0.14a

0.12a

0.09a

0.11a

0.392

  1. Mean on a similar row with the same alphabetic superscripts do not differ from each other (p > 0.05)
  2. aSeeds exposed in water for 2 days prior to shock
  3. bPresented to the nearest integer