|Online ISSN : 2349-8080
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2 Department of Horticulture, University of Georgia, Athens, GA, 30602, USA
Cupressus semperviens ‘Stricta’ is a member of Cupress family, also called Italian cypress or Mediterranean cypress, native to the eastern Mediterranean region. It has been widely cultivated as an ornamental tree all over the world because of its evergreen, drought resistant, heat tolerant, pH adaptable, salt tolerant and narrow-straight-tall habit. To meet the increasing market demands, we carried out the stem cutting propagation in January and treated with different types and various concentration hormones: liquid KIBA 1000, 3000, 8000 mg/L and powder Hormodin #1, #2, #3. Hormone has a significant effect on rooting percentage. The highest rooting percentage, 56.25%, was obtained under the treatment of KIBA 3000 mg/L, 28.13% and 30.25% for KIBA 1000 mg/L and 8000 mg/L, respectively. Cuttings treated with Hormodin had rooting percentage from 25%, 37.5%, 53.125% under Hormodin #1, #2, #3 respectively. Hormodin #3 yielded 23.75, which was the highest mean number of roots in all treatments. The total length of roots under treatment KIBA 3000 mg/L, Hormodin #2 and Hormodin #3 was 101.20, 103.46 and 109.29 cm respectively, which had significant different to other treatments. Both KIBA and Hormodin could increase the rooting percentage and the recommended should be KIBA 3000 mg/L and Hormodin #3.