Pacific Northwest Research Station

Title: Genetic variation in rootability of cuttings from one-year-old western hemlock seedlings.

Author: Sorensen, Frank C.; Campbell, Robert K.

Date: 1980

Source: Res. Note PNW-RN-352. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p

Station ID: RN-PNW-352

Description: One-year-old western hemlock (Tsuga heterophylla (Raf.) Sarg.) seedlings from three open-pollination families from eight locations in the Washington and Oregon Coast Ranges were cultured under accelerated growth conditions in a glasshouse. Forty cuttings from each of five seedlings (open-pollination siblings) per family were then placed in a rooting box in a randomized block design with five replications. Percentages of cuttings rooted after 1 year in the bed were analyzed in a hierarchal design.

Average rooting percentage was 72.4 percent. Significant effects were associated only with replication, siblings-in-families-in-provenances (S/F/P), and with the interaction, S/F/P x replication. The last two together accounted for 73 percent of the variance.

The results indicated that additive genetic effects were not important to rooting success, but that dominance and unique clone-effects probably were.

Keywords: Heritability, provenance, genetic traits, rooting ability, western hemlock, Tsuga heterophylla

View and Print this Publication (154 KB)

Publication Notes: 

• We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
• This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
• You may send email to pubrequest@fs.f ed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

 Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

Citation

Sorensen, Frank C.; Campbell, Robert K.  1980.  Genetic variation in rootability of cuttings from one-year-old western hemlock seedlings..   Res. Note PNW-RN-352. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p