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Tree Improvement - Coggle Diagram
Tree Improvement
terms
forest genetics
study of heredity & variation in forest trees
cornerstone of all breeding programs
forest tree breeding
application of forest generitcs
tree manipulated
produce suitable type
mans need
directed activty
solve specific problem
tree improvement
application of tree breeding
tree breeding plus silviculture
genetic improvement further enhances
sound silvi operations
more or less permanent improvement in character/trait of interest
silviculture
aims to create favorable conditions where traits can be expressed
seed zone
forces shaping variation
selection
mutation
gene flow
tree improvements
objectives
increase yield of forest products
expand area of production
sustain/stabilize production
improve quality of products\
unique features
tree breeding & tree improvement
long gestation period of crop of trees
use of indirect evidence
uncertainty & need for continuous experimentation
necessity for seed production
scarcity of basic information on the genetics
enormous genetic diversity
pop to be bred usually enormous
difficulty in controlling envi conditiona
desire for huge genetic gains as a result of tree improvement
phases
identification & prioritization of spp
determination of the amt, kinds & causes of variability w/in the target spp
packaging of desired qualities into individuals
mass production of improved individuals
genetic resources conservation
basic principle
p = g + e + ge
phenotype
external manifestations
genotype
any change in genotype is permanent
forest genetics
environment
silviculture
phenotype x genotype interaction
tree improvement