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ŠUMARSKI LIST 1-2/2016 str. 41     <-- 41 -->        PDF

EFFECT OF ROOTING HORMONES ON THE ROOTING CAPABILITY OF Ficus benjamina L. CUTTINGS
UTJECAJ FITOHORMONA NA SPOSOBNOST ZAKORJENJIVANJA REZNICA VRSTE Ficus benjamina L.
Osman TOPACOGLU, Hakan SEVIK, Kerim GUNEY, Canan UNAL, Erol AKKUZU, Ahmet SIVACIOGLU
Summary
Vegetative production techniques, of which cutting method widely used in propagation of ornamental plants, have a crucial role for conserving the plant genetic sources. On rooting development of stem cuttings, cutting position, rooting medium and rooting hormone are some of the critical factors that affect the success. The primary objective of this study is to determine the best hormone doses and ideal rooting medium on Ficus benjamina L. stem cuttings. Conventionally, the most frequently vegetative propagation method is the rooting of the stem cuttings in various media such as, pearlite, peat, sand, through exposure to high-concentration rooting hormones (IBA, IAA, NAA, etc.). But, this conventional technique requires wide areas in the rooting stage of mass production, prevents monitoring the course of rooting, and necessitates large amount of materials used as hormones and rooting media. In this study, a new method that may be preferable in mass production of plants was tested. 39 different treatments were carried out, and their results were evaluated. Sand, and perlite were used as solid rooting media. Stem cuttings were kept in low-concentration hormones permanently after cutting (liquid medium). In this way, their rooting capability were examined. Rooting trials were conducted before stem cuttings were taken to solid rooting media. As conclusions, the highest rooting ratio were obtained for 10 ppm of NAA (94.43%) and 100 ppm of IBA (93.9%) in liquid media. Moreover, the highest root length and the average root length were quite low in liquid media.
KEY WORDS: Fitohormones, vegetative propagation, auxins, rooting
Introduction
Uvod
Millions of plants are vegetatively produced every year to be used in different fields. If the genetic structure of an individual is intended to be conserved, its production is based on cutting. In this way, the genetic structure of rootstock is conserved exactly. Millions of plants are produced by use of this method every year to be used in various fields such as landscaping, forestry, and agriculture.
Since auxin had been begin to use as plant growth regulators, lots of researches have been conducted and lots of methods have been developed and applied on various plant