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چکیده
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ȋSalix purpurea L.) are receiving more consideration due to their fast-growing, good performance in lowlands, valuable cellulose source, high biomass production, reduction of soil erosion, special medicinal uses, and ornamental value in the landscape. So, this research was carried out for the lengths of stem cutting along with Indole-3-butyric acid as a factorial arrangement in completely randomized design with three replications. Two factors were included three stem lengths (10, 20 and 30 cm) and three levels of IBA (0, 500 and 1,000 mg L-1ȌǤͶͷ days after the planting of stem cuttings in perlit, some morphological characteristics related to the root- Ǥ that 30-cm stem cuttings had the highest activated buds, total leaves, fresh and dry weight of shoots, ϐ 20-cm and 30-cm stem cuttings in characteristics of root number, root dry weight, the length of longest shoot, the length and width of leaves. The using of IBA plant growth regulator up to certain concentration (500 mg L-1) increased the total leaves, length of the longest shoot and leaves number of the longest shoot ϐ ȋPζͲǤͲͳȌǤ ǡ high concentration of IBA (1,000 mg L-1) caused the reduction of these traits. In conclusion, the application of 20-cm ed Willow stem cuttings with or without 500 mg L-1 IBA, ϐ time, is recommended for vegetative propagation of this ornamental-medicinal shrub.
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