yousef mohamad⁽¹⁾, Emad Daoud Ismail⁽²⁾, Khaled Farid Al-Janad^(*3)

(1) Department of Field Crops – Faculty of Agriculture – Tishreen University – Lattakia – Syria.

(2) Department of Plant Protection – Faculty of Agriculture – Tishreen University – Lattakia – Syria.

(3) Department of Field Crops – Faculty of Agriculture – Tishreen University – Lattakia – Syria.

 (*Corresponding author: Farid Al-Janad, E-Mail:kh33j55@gmail.com).

Received: 11/03/2020                               Accepted: 27/09/2020

Abstract

The research was carried out during 2017/2018 growing season at Buqa Farm of the Faculty of Agricultural Engineering, Tishreen University. in Lattakia . to study the effect of plant density and infection mosaic cucumber virus on the morphological traits of beans (Vicia faba L.). The local bean variety was used with three plant densities (5-10-20 plants / m²). Virus infection was made when the length of the plant reached 15 cm. The design of the experiment was carried out according to the Randomized Completely Block Design (RCBD) with the arrange of split plot with three replicates. The treatments of infection were distributed to the main plots while the sub plots included the density treatments. Results showed that the plant density of (5 plants/ m²) surpassed the plant densities of (10 and  20 plants/ m²) in  number of plant branches , fresh weight of leaves on the stage of pods formation and leaves area at the stage of pods formation. The plant density of (20 plants/ m²) surpassed the other densities (5- and 10 plants/ m²) in leaf area index. treatment (E0) with a plant density of (5 plants/ m²) had the highest number of branches, fresh leaves weight and leaves area at the stage of pods formation the. ON the other hand, when the infected plant (E0) were planted at high density (20 plant/m²), they had the highest leaf area index. The healthy plants (E1) were superior to infected plants (E0) in all studied traits in terms of number of plant branches which declined by 16.66- 31.66%. fresh leaves weight per plant by 0.75- 1.80%. leaves area by 0.84- 1.82 % and leaf area index by 6.06- 14.28% respectively.

Keywords: Vicia faba, Plant density, Cucumber mosaic virus, Morphological traits.

Full paper in Arabic: PDF