ANATOMICAL STRUCTURE AND ADVENTITIOUS ROOT FORMATION IN Rhododendron ponticum L. CUTTINGS
Katarzyna Strzelecka
Wrocław University Of Environmental And Life SciencesAbstract
Cuttings of R. ponticum were treated or not with ‘Ukorzeniacz AB’ containing IBA and NAA, and placed in rooting medium (temp. 21°C). Transverse sections were made of the bases of the cuttings removed from the soil after 2; 3; 4; 5 and 6 weeks. Meaningful anatomical changes in anatomical structure of R. ponticum cuttings connected with wound-healing process could be seen during rooting. In first two weeks periderm in cortex and callus from cambium and phloem emerged as a response to wounding of cuttings. After 3 weeks initiation of wound xylem started in callus. It developed very intensively
and did not depend on the way of cutting treatment. Application of auxins did not or not considerably influenced the anatomical changes in stem structure of R. ponticum during rooting – proliferation of new xylem was similar in control cuttings and in cuttings treated with rooting stimulator ‘Ukorzeniacz AB’, although it stimulated initiation of root primordia. Adventitious root formation occurred only in cuttings treated with ‘Ukorzeniacz AB’, in which numerous root primordia could be observed after 3 and more weeks of rooting. In control cuttings there was none of them even after 6 weeks of rooting.
Keywords:
rhododendrons, rooting, anatomyReferences
Cameron R.J., Thomson G.V., 1969. The vegetative propagation of Pinus radiata: Root Initiation in cuttings. Bot. Gaz. 130(4), 242–251.
Czekalski M., 1991. Różaneczniki. PWRiL, Warszawa.
Davies F.T., Lazarte J.E., Joiner J.N., 1982. Initiation and development of roots in juvenile and mature leaf bud cuttings of Ficus pumila L. Amer. J. Bot. 69, 804–811.
Filutowicz A., Kużdowicz A., 1951. Mikrotechnika roślinna. PWRiL, Warszawa.
Hartmann H.T., Kester D.E., Davies F.T., 1990. Anatomical and Physiological basis of propagation by cuttings. in: Plant propagation, principles and practices. International Editions London, 199–225.
Hejnowicz Z., 1973. Anatomia rozwojowa drzew. Wyd. Nauk. PWN, Warszawa.
Kondratovics U., 1999. Anatomische Eigenarten der Adventivwurzelbildung von Rhododendronstecklingen während der Bewurzelung. Rhododendr. und Immergr. Laubgehölze Jahrb., 72–85.
Krzymińska A., Zenkteler E., Czekalski M., 2001. Budowa anatomiczna sadzonek pędowych różaneczników i powstawanie w nich korzeni przybyszowych. Rocz. AR Poznań CCCXXXIV, Bot. 4, 137–140.
Strzelecka K., Czekalski M., 2001. Powstawanie korzeni przybyszowych w sadzonkach Rhododendron ‘Cunningham’s White’. Rocznik Dendrologiczny 49, 183–190.
Strzelecka K. 2003. Zmiany budowy anatomicznej różanecznika fioletowego (Rhododendron catawbiense Michx.) podczas ukorzeniania. Zesz. Probl. Post. Nauk Roln. 491, 261–267.
Syros T., Yupsanis T., Zafiriadis H., Economou A., 2004. Acticity and isoforms of peroxidases, lignin and anatomy, during adventitious rooting in cuttings of Ebenus cretica L. J. Plant Physiol. 161, 69–77.
Tureckaia R.Ch., 1961. Fizjologija kornieobrazowania u cherienkov i stimulatory rosta. Izdatiel’stwo Akademii Nauk SSSR, Moskwa.
Wrocław University Of Environmental And Life Sciences
License
Articles are made available under the conditions CC BY 4.0 (until 2020 under the conditions CC BY-NC-ND 4.0).
Submission of the paper implies that it has not been published previously, that it is not under consideration for publication elsewhere.
The author signs a statement of the originality of the work, the contribution of individuals, and source of funding.
