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Table 2 Agronomic performance of the improved line Hua1228S and the recurrent parent Guangzhan63-4S in Wuhan and Hainan

From: Accelerated molecular breeding of a novel P/TGMS line with broad-spectrum resistance to rice blast and bacterial blight in two-line hybrid rice

Trait

Summer season (sterile) at Wuhan in 2014

Winter season (fertile) at Hainan in 2015

Guangzhan63-4S

Hua1228S

Guangzhan63-4S

Hua1228S

Days to heading (d)

87.3 ± 6.1

88.0 ± 6.1

108.0 ± 9.5

108.7 ± 9.1

Plant height (cm)

91.6 ± 4.7

93.0 ± 4.6

94.7 ± 2.0

101.3 ± 2.5**

Panicle number

9.9 ± 1.3

9.4 ± 2.0

7.1 ± 1.3

7.1 ± 0.9

Panicle length (cm)

24.5 ± 1.0

24.1 ± 1.5

21.3 ± 0.4

22.2 ± 0.7*

Number of spikelet per panicle

158.9 ± 13.5

161.4 ± 14.1

156.3 ± 5.3

162.2 ± 4.3

Seed setting rate (%)

–

–

84.8 ± 5.1

82.7 ± 4.0

1000-grain weight (g)

–

–

27.8 ± 0.6

28.9 ± 1.0*

Stigma exertion rate (%)

35.9 ± 15.5

53.7 ± 9.2

–

–

Yield per plant (g)

–

–

25.8 ± 3.5

27.4 ± 4.2

  1. Note: The value of agronomic traits is measured as mean ± s. d. ** and *indicate significant difference of the trait performance between the improved line and the control line at P < 0.01 and P < 0.05, respectively