Genecological study of submaritime Douglas-fir seedlots in the B.C. Interior

Project number: EP 1200.03

District: Selkirk Forest District

Objectives

To evaluate to the growth and adaptability of:

• Coastal x interior Douglas-fir hybrids
• Douglas-fir seedlots from the Submaritime (SSM) zone

on productive, low elevation sites in the Southern Interior.

Experimental design

Genetic entries included in test (160 total)

Genetic origin	Geographic origin	# of families
Wind pollinated (WP) single-tree collections	Submaritime zone - seedlots collected along latitudinal and elevational transects	116
Full-sib families	Coastal Douglas-fir - controlled crosses of high breeding value parents from Fdc breeding program	12
Fdc x Fdi hybrids	High breeding value Fdc female parents and Fdi WKL/SA male parents. Crosses made at CLRS	6
WP single-tree collections	Shuswap Lake	12
WP single-tree collections	West Kootenay low elevatio	11
Fdi x Fdc hybrids	High breeding value Fdi female parents and Fdc male parents. Crosses made at KFC	2
Full-sib family	Shuswap Adams cross made at KFC	1

Layout

Randomized complete-block design with eight replicate blocks. The genetic entries were randomly subdivided into 4 sets of 32 entries; sets were randomly assigned to positions in blocks; genetic entries were randomly assigned to four-tree row plots within sets. Sampling units are individual trees spaced at 2 x 1 m. White stakes identify corners.

History

• 1997 plantations established
• 1999 plantation brushed and third-year measurements