The Effect of IBA (Indol-3-Butyric Acid) Dose Applications on Rooting of Hardwood and Softwood Top Cuttings of White Mulberry (Morus alba L.) and Black Mulberry (Morus nigra L.)

Hussam Baroudi *(1) Georgous Makhoul(2) and  Hafez  Mahfoud(3)

(1). Department of Citrus and Tropical Plants Researches, General Commission for Scientific Agriculture Research (GCSAR), Damascus, Syria.

(2). Department of Horticulture, Faculty of Agriculture, Tishreen University, Latakia, Syria.  

(3). Department of Biotechnology, GCSAR, Damascus, Syria. 

(*Corresponding author: Eng. Hussam Baroudi. Email: hussambaroudi@gmail.com).

Received: 22/10/2017                                Accepted: 21/12/2017

Abstract

This study was conducted at glasshouse of Citrus and Tropical Research Department in Tartus governorate, and Olive Nursery in Latakia governorate, during 2015 to determine the influence of Indol-3-Butyric Acid (IBA) doses on hardwood and softwood top cuttings of three types of M. alba L. (B-1, B-5, KH-8) and three types of M. nigra L. (M-4, KH-9, KH-1) and one fruitless type (B-3), which spreads in different locations in Tartus, Syria. Hardwood cuttings were prepared during February from one-year-old shoots, and the softwood top cuttings were prepared during August in 2015. The cuttings were treated with different doses of IBA (1000, 2000 and 4000 ppm) in addition to the control application 0 ppm. The cuttings were planted in the glasshouses in order to root. The results indicated that the softwood cuttings had the highest average of rooting percentage, number of roots, and roots length comparing to the hardwood cuttings. The hardwood cuttings of the phenotype (KH-9) had a high significant difference comparing with the other phenotypes with average of rooting percentage (60%), length of roots (4.65 cm), and number of roots (2.6 unit/cutting). The concentration 4000 ppm of IBA was superior regarding rooting percentage, roots number, and length of roots over the other concentrations, while the softwood cuttings (M-4) phenotype was superior over the other phenotypes with average of length of roots (9.14 cm), and number of roots (6.73 unit/cutting). (KH-9, KH-8) phenotypes had the highest rooting percentage (53.33%), while the best treatment was found in 2000 ppm concentration of IBA comparing to other concentrations.

Keywords: White Mulberry, (Morus alba L.), (Morus nigra L.), Propagation, IBA.

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