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Preliminary results indicate promising strobili production in the spruce breeding arboretum established at Vernon during June, 1976.
The grafted material assembled at this arboretum originated from plus trees selected in three different regions, called selection units, of British Columbia. These selection units are: Prince George, Smithers, and East Kootenay. Originally, the first grafts from the parent trees were planted into clone banks at the Red Rock Research Centre. However, it was found that the grafts produced virtually no strobili at this northerly location probably due to the cool wet climate. We felt that the warm and dry climate of the Okanagan Valley would favourably alter the lack of strobiIi production.
New grafts were made using scion material from the clone banks commencing the spring of 1973. In the spring of 1976 they were all transported to Vernon and planted out at 5.5 m2 spacing. limited amount of watering was administered as the summer was uncharacteristically cool and wet.
In spite of the wet summer a cursory check of the grafts in the spring of 1977 indicated that several grafts had strobili of both sexes present. In fact, there were a great deal more strobiIi on these grafts than we have ever encountered in the Red Rock clone banks. One 4 year old graft, in particular, produced 29 female strobili while measuring only 90 cm's in height. Another one produced over 65 male strobili.
An assessment of cones In, the fall indicated that nearly 10 per cent of the families produced cones (22 of 225 families). The distribution of the cone bearing families was interesting; nearly 13 per cent (19 of 147) of the northern families (Smithers and Prince George selection units) produced cones while only slightly under 4% (3 of 78) of the families from the East Kootenay selection unit produced cones. An examination of the clone banks at Red Rock indicated that practically no cones were produced there on the same families that appeared to be quite prolific at Vernon.
We expect that once the grafts are well established in the Vernon breeding, arboretum they will be producing strobili of both sexes in abundance.
For further information write to G. Kiss, B.C. Forest Service, 4504 Pleasant Valley Road, Vernon, B.C. V1T 4M6.
[Abstract contains full text of memo.]
BC Forest Service - Research Division. 1977. StrobiIi production of the Vernon Spruce Breeding Arboretum. British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development. Research Memo (FLNRORD). RM21
Topic: FLNRORD Research Program
Series: Research Memo (FLNRORD)
Keywords: FLNRORD, Research Memo, British Columbia
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