首页|INDOLE-3-BUTYRIC ACID AND A SEAWEED BASED BIOSTIMULANT IMPROVE VEGETATIVE PROPAGATION OF FIELD ELM (ULMUS MINOR MILL.) BY SOFTWOOD CUTTINGS
INDOLE-3-BUTYRIC ACID AND A SEAWEED BASED BIOSTIMULANT IMPROVE VEGETATIVE PROPAGATION OF FIELD ELM (ULMUS MINOR MILL.) BY SOFTWOOD CUTTINGS
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NSTL
The aim of the present study was to improve the vegetative propagation of field elm (Ulmus minor Mill.) by softwood cuttings. In a factorial experiment, the cuttings were quick-dipped (8 s) in aqueous solutions of IBA (0, 1500, and 3000 mg l(-1)) followed by foliar spray of a commercial seaweed extract (Citoking-Anoca Chemistry, Spain) at the concentrations of 0, 1.5, and 3 ml l(-1). Without the application of IBA or seaweed extract (SWE), the percentage of rooting was 20.9 and 40.2%, respectively. The highest percentage of rooting (78.9) was obtained by using 1500 mg l(-1) IBA that showed significant difference compared to the control (20.9). The highest root and shoot length (18.0 cm and 55.8 mm, respectively) was observed in 1500 mg l(-1) IBA + 1.5 ml l(-1) SWE. The application of SWE had no significant effect on root diameter, leaf bud sprouting, and number of new leaves. In contrast, all these traits were increased by using 1500 mg l(-1) IBA. Survival of the cuttings during the rooting period was not affected by SWE. However, increase in the concentration of IBA from 0 to 3000 mg l(-1) reduced the survival from 98.6% to 91.7%, respectively. In conclusion, application of 1500 mg l(-1) IBA alone or in combination with 1.5 ml l(-1) SWE was suitable to enhance vegetative propagation of field elm by softwood cuttings.
NSTL
