Table 5 Variance analysis of seedling numbers.

From: An improved method for high-temperature induced embryo sac chromosome doubling in Populus simonii Carr. × P. nigra var. italica (Moench.) Kochne, an interspecific hybrid of Tacamahaca and Aigeiros poplars

sources of variation

DOF

SS

MS

F

F0.05

Time after pollination(h)

2

634.89

317.44

1.18

19

Temperature(°C)

2

19630.22

9815.11

36.56*

 

Treatment duration(h)

2

2162.89

1081.44

4.03

 

error

2

536.89

268.44

  

total

8

22964.89

   
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