Effective gene transfer method developed. A protocol for gene transfer and plant regeneration has been found to be effective in a variety of cottonwood clones and species.
Research projects can therefore focus on commercially valuable clones.
Genes toxic to cottonwood leaf beetles identified. Genes from Bt that are toxic to two Chrysomelid beetle defoliators were identified in laboratory feeding studies. Gene transfer experiments to produce insect resistant trees are underway. Flowering genes from poplar isolated and transferred into trees. Juvenile trees induced to flower.