Abstract
A microcomputer based video image analyzer is described and demonstrated in the analysis and comparison of tissue types of 6-month-old Ethrel-treated and control seedlings of loblolly pine (Pinus taeda L.). Two different programs were employed. `Topographer I' sought, identified, and measured cell or resin canal lumen areas, and `Area' measured tracheid length and silhouette areas. Ethrel treatment induced an increase in radial growth and a decrease in shoot elongation and needle growth. Bark production was stimulated by the same treatment. The tracheid lumens of Ethrel-treated plants were shorter and had a smaller cross-sectional area, whereas the tracheid cell walls increased in thickness. The treatment also increased resin canal formation in the xylem.
Full text
PDF
Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Warner H. L., Leopold A. C. Ethylene evolution from 2-chloroethylphosphonic Acid. Plant Physiol. 1969 Jan;44(1):156–158. doi: 10.1104/pp.44.1.156. [DOI] [PMC free article] [PubMed] [Google Scholar]