Tag Archives: Rootstock

The Effect of IBA (Indol-3-Butyric Acid) Treatment on ‎Rooting of Some Damask Rose (Rosa damascena Mill.) ‎Rootstock Genotypes

Tharwat Salim Khaddour*(1) Hafiz Mohammad Mahfouz(1) and Mazen Ali Nassour(2)

(1). Scientific Agricultural Research Center of Lattakia, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

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

(*Corresponding author: Eng. Tharwat Saleem Redwan. E-Mail: tharwat.redwan@yahoo.com). 

Received: 26/06/2019                               Accepted: 27/09/2019

Abstract

This study was conducted at glasshouse of ACSAD  nursery in Lattakia, during (2018 and 2019) using four genotypes of Rosa damascene (RD1, RD2, RD3 and RD4) treated with three different concentrations of IBA i.e.500, 1000 and 2000 ppm in addition to the control treatment 0 ppm, in order to determine the best concentration of IBA. The experimental design was randomized complete block design with two factors in four replicates. The results indicated that the use of  IBA encouraged the rooting at different rates according to the genotype and the concentration of IBA. Treatments (1000 and 2000) ppm were significantly higher than the other treatments in rooting rate (%(89.8- 88.27 respectively. The response of the rootstocks to IBA differed according to the studied genotypes. Genotypes RD1 and RD2 were superior when treated with 2000 ppm concentration in root percentage (90.2- 90.3)%, callus creation (80- 81)%, root number (8 and 8.1) and root length (5.41 and 5.4) cm respectively.

Keywords: Rosa damascena, Propagation, rootstock, Auxin IBA, Genotypes.

Full paper in Arabic: PDF

Growth Characters and Dynamic of Some Apple Genotypes Selected as Rootstock

Ola Al-Halabi*(1) Bayan Muzher(1) and Faisal Hamed(2)

(1). Pome and Grapevine Division, Sweida Research Center, General Commission for Scientific Agriculture Research (GCSAR), Damascus Syria.

(2). Faculty of Agriculture, Damascus University, Damascus, Syria.

(*Corresponding author: Dr. Ola Al-Halabi. E-Mail: ola_halabi@msn.com).

Received: 06/01/2018                                Accepted: 23/03/2018

Abstract

This research was conducted at Pome and Grapevine Division in Sweida Research Center, GCSAR, during 2011-2012, to study growth characters and dynamic of five apple genotypes selected as rootstocks, through studying the changes in primary and secondary shoots length, and the number of leaves during the growth season, in addition to their length, leaves number and spiny shoots at the end of growth season of one year seedlings. The results showed differences among studied genotypes in growth dynamic during the growing season, and synchronization between structure units (primary and secondary shoots), this was clearly through significant values of auto and cross correlation coefficients, which correlated with the height and the decrease in growth rate according to the genotype. At the end of the growing season, the genotype S distinguished by highest average primary shoot of (77.9 cm) and secondary shoots (53.1 cm), these were in significant with genotype A. The differences in the average of total leaves number were insignificant among studied genotypes, and genotype B have significantly the highest number of spines on primary shoot (11 spines) with A, S and H, and on secondary shoots (13 spines) with C, S and H. Consequently, these results help to know the mechanism of rootstocks which affect the growth of cultivar scion.

Keyword: Apple Malus spp., Rootstock, Growth dynamic, Primary and secondary shoots.

Full Paper in Arabic: PDF