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Table 1 Mean and descriptive statistics of morphological traits in 662 doubled haploid association panel evaluated under normal and heat stress conditions over two growing environments

From: Genome wide association mapping for heat tolerance in sub-tropical maize

Trait

Condition

Mean

Max

Min

LSD

σ2 G

σ2 GE

H2

GY

Normal

5.45

6.96

3.15

2.62

0.55***

0.16***

0.51

AD

 

71.17

78.81

66.99

4.00

3.87***

0.29***

0.77

SD

 

72.83

83.31

68.51

4.45

4.57***

0.39***

0.76

ASI

 

1.78

3.60

0.62

3.20

0.69***

0.18***

0.51

PH

 

175.44

191.51

151.56

28.44

61.93***

6.17***

0.53

EH

 

80.71

70.93

91.84

23.19

27.87***

10.29***

0.41

EPO

 

0.46

0.52

0.45

0.19

0.0004

.0002

0.41

GY

Heat stress

3.46

4.58

2.55

2.57

0.35***

0.25***

0.38

SD

 

71.68

72.62

71.24

7.07

0.55***

7.45***

0.07

ASI

 

2.69

5.63

0.25

4.45

1.07***

0.35***

0.42

PH

 

149.13

153.13

144.07

29.04

15.14***

42.45***

0.17

EH

 

62.74

69.53

55.41

22.03

18.11***

16.89***

0.31

EPO

 

0.42

0.47

0.38

0.11

0.0004

.0002

0.32

  1. * = 0.05% significant, *** = 0.001% significant, σ2 G Genotype variance, σ2 GE Genotype x Environment variance, Max Maximum, Min Minimum, H2 broad-sense heritability, LSD Least significant difference, GY Grain yield, AD Days to 50% anthesis, SD Days to 50% silking, ASI Anthesis-silking interval, PH Plant height, EH Ear height and EPO Ear position