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Effect of ethrel on growth and stem anatomy of pinus halepensis seedlings



Effect of ethrel on growth and stem anatomy of pinus halepensis seedlings



IAWA (International Association of Wood Anatomists) Bulletin 8(1): 11-20



Ethrel (2-chloroethylphosphonic acid) applied in lanolin paste at concentrations of 0.01, 0.10, or 1% to stems of 12-month-old Pinus halepensis seedlings greatly altered the rate of growth and anatomy of stems within 60 days. Height growth was not affect but growth of bark and xylem tissues was greatly increased after treatment with ethrel at 0.10 or 1%. The thick bark was the result of increased phloem production and more intercellular space. Increase in the amount of xylem resulted from production of more tracheids per radial file rather than an increase in tracheid size. The highest concentration of ethrel applied (1%) stimulated increase in the amount of ray tissue and production of longitudinal resin ducts in the xylem. The role of ethylene in regulating differentiation of stem tissues is discussed.

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Accession: 005237334

Download citation: RISBibTeXText

DOI: 10.1163/22941932-90001019


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