The effect of ethanol extract of Eucalyptus ‎camaldolensis on growth parameters of Festuca ‎ovina species‎

Banafsheh Heidari Koholi¹ Mohammad Hassan Assareh² Shoukufeh ‎Enteshari³ Anahita Shariat⁴

1) Payam Noor University, Najaf Abad branch, Email:
2) Prof. in Plant Cell & Tissue Culture, Seed and Plant Certification and Registration Institute, Karaj, Iran
3) Associate Professor, Payame Noor University, Najafabad, Iran
4) Scientific board, Research Institute of Forests and Rangelands‎

Publication : 8th.International Conference on Researches in Science & Engineering & 5th.International Congress on Civil, Architecture and Urbanism in Asia(8icrsie.com)
Abstract :
The use of allelochemicals as natural herbicides is a new approach to reduce the ‎adverse effects of chemical herbicides on the environment and prevent weed ‎resistance to herbicides. In this study, the allelopathic effect of Eucalyptus ‎camaldolensis leaves and roots on Festuca ovina was tested in greenhouse ‎conditions in 2008 at the Research Institute of Forests and Rangelands‎. This study ‎was conducted as a completely random design with three repetitions and comparing ‎the means with Duncan s test at the level of 0.05. The treatments used in the ‎greenhouse stage were: control, dried leaf powder (5, 10, 15 grams), fresh leaf ‎powder (5, 10, 20 grams), ethanolic extract of leaves (3, 6, 12 grams per liter), ‎aqueous extract of dry leaves (5, 10, 15%), aqueous extract of fresh leaves (10 and ‎‎20%) and root secretions. In some pots, ethanolic extract of dry leaves (3, 6, 12 ‎g/liter) was sprayed on the leaves. The parameters measured in this study include ‎fresh and dry weight of biomass, stem and root, relative water content (RWC), leaf ‎water content per unit of leaf area (LWCA), specific leaf area (SLA), and leaf area ‎‎(LA). The results showed that in all the measured traits, the most inhibitory effect ‎was related to the ethanolic extract, the aqueous extracts of fresh leaves and dry ‎leaves also had an inhibitory effect, and the measured parameters also showed a ‎decrease. The used fresh and dry leaf powders acted as a covering layer and ‎prevented soil moisture from escaping. The effect of root secretions was also ‎investigated in the pots containing one-year-old eucalyptus seedlings, and in this ‎case, the root secretions completely prevented the seeds from germinating.‎
Keywords : Allelopathy Eucalyptus camaldolensis Festuca avina growth parameters root secretions‎