INFLUENCE OF GIBBERELLIN-A3 AND ANCYMIDOL ON SUNFLOWER LEAF ANATOMY Academic Article uri icon

abstract

  • The plant growth retardant ancymidol (-cyclopropyl--(4-methoxyphenyl)-5-pyrimidinemethanol), when sprayed at 132mg/L of active ingredient, increased leaf thickness, palisade cell length, and number of cells per unit length, and decreased intercellular space percentage in developing Helianthus annuus L. (sunflower) cv. Mammoth Russian leaves when plants were grown under 400 or 1500mols1m2 photosynthetic photon flux density. Foliar sprays of gibberellic acid at 1040mg/L reversed the effects of ancymidol on leaf anatomy. Stomatal density and total stomata per adaxial leaf surface area were increased by ancymidol sprays.

published proceedings

  • CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE

author list (cited authors)

  • STARMAN, T. W., KELLY, J. W., & PEMBERTON, H. B.

complete list of authors

  • STARMAN, TW||KELLY, JW||PEMBERTON, HB

publication date

  • January 1, 1990 11:11 AM

published in