Germination

0

 

Dry seed

01

 

Start of imbibition

03

 

Imbibition complete

05

 

Radicle emerged from seed

07

 

Coleoptile emerged from seed

09

 

Leaf just at coleoptile tip

Seedling growth

10

 

First leaf through coleoptile

11

 

First leaf unfolded

12

 

2 leaves unfolded

13

 

3 leaves unfolded

14

 

4 leaves unfolded

15

 

5 leaves unfolded

16

 

6 leaves unfolded

17

 

7 leaves unfolded

18

 

8 leaves unfolded

19

 

9 or more leaves unfolded

Tillering

20

 

Main shoot only

21

 

Main shoot and 1 tiller

22

 

Main shoot and 2 tillers

23

 

Main shoot and 3 tillers

24

 

Main shoot and 4 tillers

25

 

Main shoot and 5 tillers

26

 

Main shoot and 6 tillers

27

 

Main shoot and 7 tillers

28

 

Main shoot and 8 tillers

29

 

Main shoot and 9 or more tillers

Stem Elongation

30

 

Pseudo stem erection

31

 

1st node detectable

32

 

2nd node detectable

33

 

3rd node detectable

34

 

4th node detectable

35

 

5th node detectable

37

 

Flag leaf just visible

39

 

Flag leaf ligule/collar just visible

Booting

41

 

Flag leaf sheath extending

45

 

Boots just swollen

47

 

Flag leaf sheath opening

49

 

First awns visible

Inflorescence emergence

50

 

First spikelet of inflorescence visible

53

 

1/4 of inflorescence emerged

55

 

1/2 of inflorescence emerged

57

 

3/4 of inflorescence emerged

59

 

Emergence of inflorescence completed

Anthesis

60

 

Beginning on anthesis

65

 

Anthesis half-way

69

 

Anthesis completed

Milk development

71

 

Kernel watery ripe

73

 

Early milk

75

 

Medium milk

77

 

Late milk

Dough development

83

 

Early dough

85

 

Soft dough

87

 

Hard dough

Ripening

91

 

Kernel hard (difficult to divide with thumbnail)

92

 

Kernel hard (no longer dented with thumbnail)

93

 

Kernel loosening in daytime

94

 

Overripe, straw dead and collapsing

95

 

Seed dormant

96

 

Viable seed giving 50% germination

97

 

Seed not dormant

98

 

Secondary dormancy induced

99

 

Secondary dormancy lost