Table 4 Genetic variability parameters for the traits of the twenty indigenous Joha rice cultivars of Assam evaluated during Sali season of 2018 and 2019.

From: Morpho-molecular and nutritional profiling for yield improvement and value addition of indigenous aromatic Joha rice of Assam

Trait

Range

Mean ± SE

GCV (%)

PCV (%)

h2bs (%)

GA (5%), As % of mean

Stem thickness (mm)

3.00–4.96

4.09 ± 0.07

10.23

10.37

97.34

20.79

Days to 1st flowering

108.00–123.33

114.51 ± 0.52

3.83

3.86

98.62

7.84

Flag leaf length (cm)

40.84–54.82

47.96 ± 0.05

9.08

9.08

99.99

18.71

Flag leaf breath (cm)

0.75–0.84

0.79 ± 0.01

3.61

3.73

93.80

7.21

Flag leaf area (cm2)

24.21–34.0

28.29 ± 0.26

10.62

10.66

99.23

21.79

Days to 50% flowering

112.50–128.50

119.80 ± 0.56

3.93

3.96

98.59

8.05

Days to maturity

144.50–162.03

152.16 ± 0.69

3.35

3.38

98.18

6.85

Plant height (cm)

98.90–142.90

127.80 ± 3.74

7.83

8.36

87.75

15.11

Productive tillers Plant−1

7.80–13.80

10.42 ± 1.17

13.15

17.27

58.00

20.64

Filled grains Panicle−1

101.73–252.07

177.21 ± 14.24

23.69

25.02

89.69

46.22

Spikelet fertility (%)

78.97–93.03

87.04 ± 1.88

4.72

5.19

82.64

8.83

1000-grain weights (g)

13.02–26.69

17.60 ± 0.27

19.41

19.47

99.38

39.85

Grain length (mm)

5.95–9.30

7.28 ± 0.05

16.55

16.56

99.84

34.06

Grain breadth (mm)

2.09–2.87

2.41 ± 0.02

9.68

9.73

99.00

19.84

Grain length/breadth ratio

2.08–4.30

3.04 ± 0.04

18.86

18.90

99.58

38.77

Decorticated grain length (mm)

4.13–6.97

5.18 ± 0.04

16.99

17.01

99.83

34.98

Decorticated grain breadth (mm)

1.89–2.57

2.20 ± 0.02

8.54

8.57

99.16

17.51

Decorticated grain length/breadth ratio

1.79–2.32

2.38 ± 0.03

19.61

19.63

99.70

40.33

Biological yield (g Plant−1)

28.98–44.97

33.56 ± 3.30

8.23

12.83

41.19

10.88

Grain yield (g Plant−1)

8.64–17.20

12.94 ± 1.65

9.83

16.09

37.36

12.38

Harvest index (%)

22.99–36.40

31.65 ± 3.16

9.08

13.49

45.26

12.58

Grain yield (kg ha−1)

1000.00–3011.67

2012.08 ± 68.16

24.62

24.85

98.14

50.24

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