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Tree Improvement CycleCreating a Better Tree
Tree Improvement Application of knowledge to produce superior treesImprovement can be made in: -Trees’ growth rate -Disease resistance -Stem, wood and/or fiber quality
Tree Selection Find “good” trees Collect their seeds or take cuttingsCross bred them Test the offspring Select the best of the offspring Repeat Easy?
What is a “good” tree? Crown: Narrow; Short vs. height of tree; healthy Branches: small diameter Stem: Straight; low taper; high volume vs. neighbors; disease and/or insect resistant; high quality wood
Selection Select trees in natural stands based on physical characteristics; superior growth, form, reduce disease and/or insect damage.
Collect seeds or take graftsTo preserve the genetic material, seeds of the selected tree or twigs are collected to graft on to root stock.
Test Offspring Testing involves growing seedlings of each parent and comparing them to other selected seedlings to determine the capability of the parents to pass on their genetic superiority.
Breeding Breeders isolate young flowers of parent trees so that unwanted pollen can not contaminate the tree.
Seed Orchard Select the best of the offspring to establish a seed orchard Repeat the process
Time It takes 6-8 years before one receives useful results from testing About 10 years after a seed orchard is establish it will produce seed for reforestation
Plant Reproduction and Breeding
Life Cycles Vocabulary test. offspring The baby of an organism.
Chapter 3 Life Cycles.
Reproduction in Flowering Plants
Adriana Gutierrez Science, Kindergarten.
Biology Unit 6 / Chapter 11 Powerpoint #1 Mr. Velekei.
Chapter 27: Vegetative propagation Leaving Certificate Biology Higher Level.
Asexual Reproduction in Flowering Plants or Vegetative Propagation
Propagating Plants by Grafting and Budding
Asexual Reproduction in Plants
REPRODUCTION SBI 3C: JANUARY ASEXUAL REPRODUCTION New individual is produced from one parent plant only Genetically identical to parent Occurs.
Genetic principles to increase the value of tree crops
Mendelian Genetics. Father of Modern Genetics Austrian monk, high school teacher, and part-time garden keeper First to propose biological inheritance.
UNIT 2 TOPICS 1-3 Study Guide. What you need to know to be successful on this test. Matching terms: Genetic modification Hemp Stomata Xylem Germination.
Mendel and his Peas.
Horticultural Science Horticulture CD
SEXUAL AND ASEXUAL PROPAGATION Plant Propagation.
Plant Breeing and Genetic Engineering Plant Science.
Plant Propagation New plants from “cloning” by runners and cuttings. Also, an introduction to grafting.
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