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Rice

Table 3 The PFPs and SSPs of H93S and PA64S after 7 d of treatment under different ΣT∆ conditions and a 13.5 h photoperiod

From: Characteristics of Fertility Transition Response to the Cumulative Effective Low Temperature in a Two-Line Male Sterile Rice Cultivar

PTGMS lines

TΔ (°C)

PFP (%)

SSP (%)

PFP (%)

SSP (%)

PFP (%)

SSP (%)

PFP (%)

SSP (%)

PFP (%)

SSP (%)

PFP (%)

SSP (%)

 

t1 = 11 h, t2 = 7 h;

Td = 24.15 °C

t1 = 9 h, t2 = 9 h;

Td = 23.69 °C

t1 = 7 h, t2 = 11 h;

Td = 23.23 °C

t1 = 5 h, t2 = 13 h;

Td = 22.77 °C

t1 = 3 h, t2 = 15 h;

Td = 22.31 °C

t1 = 1 h, t2 = 17 h;

Td = 21.85 °C

H93S

Tc = 23.0 °C

TΔ1 = 2.5 °C

3.10 ± 0.21

1.31 ± 0.11

5.41 ± 0.60

2.05 ± 0.37

12.50 ± 2.07

3.01 ± 1.07

15.96 ± 0.47

3.44 ± 0.37

36.12 ± 0.28

7.84 ± 0.36

42.36 ± 0.35

10.06 ± 0.42

∑T∆/°C·d

5.10

6.56

8.02

9.48

10.94

12.40

PA64S

Tc = 24.0 °C

TΔ1 = 3.5 °C

5.27 ± 2.58

0.42 ± 0.09

7.87 ± 0.06

1.17 ± 0.91

20.06 ± 1.06

4.82 ± 0.96

36.89 ± 0.45

7.62 ± 0.61

56.11 ± 0.10

16.21 ± 2.50

59.60 ± 0.60

11.76 ± 1.36

∑T∆/°C·d

7.15

9.19

11.23

13.27

15.31

17.35

  

t1 = 11 h, t2 = 7 h;

Td = 24.29 °C

t1 = 9 h, t2 = 9 h;

Td = 23.88 °C

t1 = 7 h, t2 = 11 h;

Td = 23.46 °C

t1 = 5 h, t2 = 13 h;

Td = 23.04 °C

t1 = 3 h, t2 = 15 h;

Td = 22.63 °C

t1 = 1 h, t2 = 17 h

Td = 22.21 °C

H93S

Tc = 23.0 °C

TΔ2=2.0 °C

1.53 ± 0.45

1.01 ± 0.26

2.03 ± 0.27

0.85 ± 0.19

7.40 ± 0.88

1.91 ± 0.39

8.66 ± 1.71

2.55 ± 0.50

14.59 ± 0.13

5.68 ± 1.98

20.63 ± 0.54

5.03 ± 1.11

∑T∆/°C·d

4.08

5.25

6.42

7.58

8.75

9.92

PA64S

Tc = 24.0 °C

TΔ2=3.0 °C

5.86 ± 1.18

2.62 ± 0.64

10.12 ± 1.93

3.11 ± 0.84

16.25 ± 0.44

4.01 ± 0.26

18.38 ± 1.52

6.59 ± 1.41

32.75 ± 2.18

8.01 ± 0.45

42.33 ± 0.55

10.80 ± 0.45

∑T∆/°C·d

6.13

7.88

9.63

11.38

13.13

14.88

  1. TΔ is the value of the ELT; Tc is the value of the CSIT; PFP is the pollen fertility percentage; SSP is the self-seed setting percentage; ΣTΔ is the value of the cumulative ELT, calculated according to the formula ΣTΔ = (TΔ*t2 *7 d)/24 h (for t2, see Table 2); and Td is the DAT calculated according to Table 2 via the following formula Td = {6 h*25 °C + t1*26 °C + t2*(Tc-TΔ)}/24 h. All the data are expressed as the means ± the standard errors
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