(1).Sub Directorate of Forestry Research Lattakia Center of Scientific Agricultural Researches (GCSAR), Lattakia, Syria.

(*corresponding author: Dr. Samer Naser E-Mail: nasersamer156@gmail.com).

Received: 31/09/2020         Accepted: 8/07/2020

Abstract

This study aimed to know the effect of Pinching on the growth of seedlings carob developing in containers Minirhizotron. Where we are cutting the top of main root at different lengths : 1- at 3 cm (C3) 2- at 6 cm (C6) 3- at 9 cm (C9) 4- without cutting – control – (C0) and studied several quantities indicators of growth and development of the total shoot and root of the seedlings for a period of three months. For the treatment (C3) we are noticed that the all seedling were die. For a radical system, results indicated a high significant superiority in the treatment (C0) values ​​for the main root of the overall growth rate such as length (cm) and the speed of growth (cm/3days) height to treatment (C6 and C9).for another sight (C6) has a high significant superiority upon the treatment C9 and control treatment at the dry weight of root system.

regarding to shoot system a significant state has dominated for the treatment (C6) at the other treatments (C9 – C0) in some indicators such as average long and diameter and dry weight of shoots .

Keywords: Ceratonia siliqua L., Pinching, main root, Minirhizotron.

Full paper in Arabic: PDF