Constraints on tree breeding: Growth tradeoffs, growth strategies, and defensive investments

Journal Article · Tue Dec 01 04:00:00 EST 1987 · Forest Science; (USA)

OSTI ID:7101681

Loehle, C; Namkoong, G

Analysis of basic growth processes and between-species trait correlations suggests that because of growth tradeoffs, breeding for growth rate (volume increment) may adversely affect defensive and other properties of trees. This can lead to negative impacts on sawtimber quality and tree life span. Selection for yield and for pathogen resistance may conflict, separate breeding programs may be needed for pulp and sawtimber purposes, and older ages may be more appropriate for selection of plus trees. In order for breeders to consider consequences of selection on tree performance, a means is required of assessing potential adult pathogen resistance and life span. Four methods are proposed for accomplishing this using properties of young trees. The properties of young trees that may correlate with adult performance are (1) wood properties related to defense, (2) wound healing ability, (3) the allometric growth coefficient, and (4) age of sexual maturity.

• OSTI ID: 7101681
• Journal Information: Forest Science; (USA), Journal Name: Forest Science; (USA) Vol. 33:4; ISSN FOSCA; ISSN 0015-749X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540210* -- Environment
Terrestrial-- Basic Studies-- (1990-)
BIOMASS PLANTATIONS
CONSTRAINTS
CORRELATIONS
GROWTH
PATHOGENS
PLANT BREEDING
PLANT GROWTH
PLANTS
PRODUCTIVITY
TREES