If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Genetic Analysis of 16 Clonal Trials of Eucalyptus grandis and Comparisons with Seedling Checks

$29.50 plus tax (Refund Policy)

Buy Article:

Abstract:

In sixteen 3-yr-old trials, clones of plus trees of Eucalyptus grandis (Hill ex. Maiden) had better yield, uniformity, survival, straightness, limb diameter, and more vigorous and full crowns for shading of competing grasses than check lots of seed origin. A select group of 65 out of 460 clones were far superior with mean height = 17.3 m, and volume/ha = 219 m³, versus check lot means of height = 15.2 m and volume/ha = 130 m³. Genetic gain calculations indicate that the expected age three performance values for the selected clones would be height = 16.9 m and volume/ha = 200 m³. Heritability (broad sense) was high for height, dbh, and volume/tree (37% to 41%). Clonal rank correlations among the quality traits (stem straightness, branch diameter, and crown score) were moderately strong (r = 0.57 to 0.81) and their correlations with growth traits were moderate to low but positive. Clonal ranks were consistent across two sites (genetic correlation = 1.00 for volume per tree). Ranks of clones at ages 1 and 2 yr were positively related to their ranks in volume/ha at age 3. Clones selected at these early ages resulted in substantial gains in volume/ha at age 3. For. Sci. 40(3):397-411.

Keywords: Juvenile-mature correlations; broad sense heritability; genetic correlations; genetic gain; genotype-environment interaction; realized gains

Document Type: Journal Article

Affiliations: Forestry Research Manager, Smurfit Carton de Colombia, A.A. 6574, Cali, Colombia, South America

Publication date: August 1, 1994

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
  • Membership Information
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more