Table 2 Performance of F ₂ population of IR64 × NH219 and its reciprocal cross

Plant height (cm)

70

75.01

17.00

42

123

0.39

−0.04

36

78.37

14.5

59

117

0.80

0.14

No. of tillers

70

4.64

2.87

1

16

1.67

3.53

36

5.09

2.47

2

12

1.36

1.94

Leaf width (cm)

70

1.26

0.30

0.50

1.80

−0.25

−0.23

36

1.22

0.21

0.80

1.70

0.13

−0.31

SPAD value

70

33.82

9.91

18.5

58.2

0.87

0.17

36

37.81

14.9

18.5

59.6

−0.11

−1.88

Leaf temperature (°C)

70

24.27

2.61

22.2

30.3

0.73

0.00

36

24.51

2.83

20.2

30.3

0.57

−0.53

6 day senescence

70

18.63

11.8

1.50

41.3

0.21

−1.10

36

20.85

8.53

2.1

37.4

−0.60

−0.03

Leaf thickness (mm)

70

0.46

0.22

0.19

1.26

1.36

2.62

36

0.44

0.19

0.19

0.92

0.94

0.06

Yield/plant (g)

70

2.52

1.97

0.00

8.00

0.88

0.34

36

2.59

2.34

0.3

10.4

1.57

2.54