Canadian Forest Service Publications

Factors related to seed production by lodgepole pine dwarf mistletoe. (Abstract). 2000. Ramsfield, T.D.; Shamoun, S.F.; van der Kamp, B.J. Canadian Journal of Plant Pathology 22(21): 191.

Year: 2000

Issued by: Pacific Forestry Centre

Catalog ID: 5538

Language: English

Availability: Not available through the CFS (click for more information).

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To establish which factors are correlated with lodgepole pine dwarf mistletoe seed production, attributes of 67 female dwarf mistletoe plants and the infected host tree were measured. Stepwise multiple regression analysis indicated that the number of dwarf mistletoe shoots, maximum shoot length, dwarf mistletoe swelling diameter and length, and distance of the dwarf mistletoe infection from the stem of the host tree were significantly correlated with fruit production. Host tree volume, branch length, number of lateral branches and the dwarf mistletoe rating were not significant. The calculated r2 of 0.2761 was low, and the number of fruit produced was found to be highly variable. These results suggest that other factors, such as dwarf mistletoe infection age, pollination success and the action of pathogens on dwarf mistletoe seeds, have a significant role in fruit production.