Table 1 T50 values of after-harvest seeds and seeds subjected to dormancy-break or after-ripening treatment.

From: Mechanism of delayed seed germination caused by high temperature during grain filling in rice (Oryza sativa L.)

 

Control

Heat

Student’s t-test

Dormancy break

After-harvest

71.28 ± 3.34 a

79.72 ± 2.51 a

**

45 °C, 3 days

61.17 ± 2.58 b

73.70 ± 3.33 ab

***

45 °C, 5 days

56.70 ± 6.03 bc

69.67 ± 3.80 bc

**

45 °C, 7 days

57.86 ± 3.87 bc

67.42 ± 4.43 bc

**

45 °C, 10 days

51.22 ± 5.29 c

64.27 ± 8.25 c

*

45 °C, 14 days

55.74 ± 3.92 bc

69.20 ± 3.28 bc

***

After-ripening

After-harvest

71.28 ± 3.34 a

79.72 ± 2.51 a

**

26 °C, 2-week

54.70 ± 2.96 b

68.27 ± 8.53 b

*

26 °C, 4-week

52.02 ± 2.52 b

69.04 ± 1.59 b

***

26 °C, 6-week

52.35 ± 4.85 b

60.95 ± 2.97 c

*

26 °C, 8-week

48.79 ± 2.19 b

57.83 ± 1.27 c

***

26 °C, 10-week

50.10 ± 3.92 b

58.57 ± 3.58 c

**

  1. All seeds were germinated at 27 °C (n = 5 per condition).Within each column, values followed by different letters are significantly different (P < 0.05). Within each row, the significance of differences between control and heat-stressed seeds is shown according to Student’s t-test (P < 0.05*, P < 0.01**, and P < 0.001***). SD values are shown after T50 values.
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