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Vegetative Propagation of Eucalyptus Hybrids through Water Culture Method

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Author Affiliations

  • 1Plant Biotechnology Division, Institute of Forest Genetics and Tree Breeding, Coimbatore 641 002, INDIA

Int. Res. J. Biological Sci., Volume 4, Issue (5), Pages 15-18, May,10 (2015)

Abstract

In Industrial forestry, purpose of vegetative propagation is to consolidate the genetic gain and to mass multiply superior trees like Eucalyptus, Casuarinas, etc. Vegetative propagation by cuttings (called macro propagation) is the main tool in Eucalyptus breeding program by which is possible to multiply the plants quickly and to retaining the characteristics of same plant. Macro propagation requires rooting medium like vermiculite, composed coir pith, root trainer, root trainer stands, poly tunnels and irrigation and is expensive. To simplify this rooting technique in Eucalyptus, the water culture experiment (hydroponics) was carried out in control pollinated Eucalyptus hybrids (E. camaldulensis (Ec 7) x E. tereticornis (Et88) and (E. camaldulensis (Ec 111) x E. tereticornis (Et86). Mini cuttings of both hybrids were placed in the transparent disposable plastic cups using tap water as media after systematic treatments like fungicide application (Bavastin 0.1%), dipping in 100ppm IBA hormone. Cuttings without systematic treatment were used as control. These cuttings were kept in the polythene tunnels for rooting with single shade net provision. It was recorded that the maximum rooting percentage 76 % in control cuttings followed by 63 % in hormone treated cuttings for the hybrid Ec 111 x Et 86. In hybrid Ec7x Et88 a maximum of 95% was recorded in the hormone treated cuttings and 91% in control cuttings. This results shows that the water culture technique is cost effective tool than existing macro propagation methods to get multiplication of Eucalyptus hybrids through cuttings.

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