Table 3 . --Analyses of variance and percent of total variance for third-year bud burst 

 and bud set in the elevational study nursery test 







: Bud 



burst 



: Bud 



s et 







: Mean 



: % of total 



: Mean : 



% of total 



Area 



Source : d.f. 



: square 



: variation 



: square : 



variation 



Trestle 



Replications 3 



63. 1 



2.8 



163.5 



3.4 



Creek 













(640 to 



Elevation 6 



26.4 



0.6 



79.7 



1.2 



1585 m plots) 















Plots within 













elevations 7 



20. 8 



0.9 



48.0 









Trees within plots 













within elevations 28 



12.1 







52. 6**2 



8.1 





Experimental error ^ 84 



16.8 



29.6 



20.9 



4.9 





Within plot 672 



5.2 



66. 1 



16. 1 



82.4 



1220 m plots 



Replications 3 



14 . 2 



2 . 1 



104.4 



5.5 



from Clear- 













water, St. 



Areas 4 



38. 7 



7,8 



104.0 ■ 



2.9 



Joe, Trestle 













Creek, 



Trees within areas 10 



13.3* 



6.3 



68.7** 



11.9 



Kanik^u 



Experimental error 42 













6.5 



9.0 



20.2 



5.0 





Within plots 240 



4.1 



74.8 



15.1 



74.6 



^Includes 



all interaction terms 



involving 



replication. 







^ * and * * 



indicate significance 



at the 5 



percent and 1 



percent level. 



respectively. 



At the individual test sites the results of the analyses of total height are very 

 similar to those from the nursery trial (table 5 presents the results for only the most 

 variable series of sites, i.e., PREF) . Most of the variability is related to differences 

 among the families representing individual trees within stands. The variability within 

 plots (i.e., among seedlings of the same family) is also large--nearly equaling that 

 among plots (experimental error). This result indicates that within-family variation 

 is large or microsite differences exert strong influences or that both are important 

 contributors. The variation related to area of seed origin or to elevational zones 

 within areas was very small in comparison and usually not significant. 



The Trestle Creek seedlings were taller than those from the Clearwater at the low 

 and high sites at both PREF and Canyon, but the Clearwater seedlings were as tall or 

 taller at the mid-elevation sites. No pattern could be seen in the variation in height 

 among seedlings related to the various elevational zones within areas. Neither was 

 there any correspondence between elevational zones in the different areas. For example, 

 seedlings from the highest Clearwater collections grew well at most test sites but those 

 from the highest Trestle Creek collection grew poorly. As a group, the seedlings from 



9 



