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U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Application of Biochemical Genetics in National Forest Management

Twelve Juglans nigra L. seed sources were grown in fumigated nursery soil with and without vesicular-arbuscular mycorrhizal fungi formed by Glomus intraradicies or Glomus etunicatum Becker and Gerd. Nuts were planted on April 30 and seedlings lifted December 20, 1988. Plants inculated with intraradicies held their leaves and retained color longer than those without mycorrhizae or inoculated with G. etunicatum. G. intraradicies appeared to stimulate the greatest amount of fibrous root growth to all seed sources, while G. etunicatum stimulated a greater number of larger primary roots. Data on height, caliper, percent colonization, and number of first order laterals > 2 mm are analyzed and discussed.

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Author(s): E. R. Carroll, Sharon T. Friedman

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1989

Section: Poster Abstracts