Mohammd Bilaal* (1), Walid Alsaid (1)and Imad aldeen Alkhalaf (1)
(1). Department. of Botany, Faculty of Science, University of Aleppo, Aleppo, Syria
(*Corresponding author: Mohammd Bilaal. E-Mail: mohammd.r.bilaal@gmail.com).
Received: 20/03/2021 Accepted: 29/07/2021
Abstract
This research was conducted in the Research Labs of Plant Ecology, Pollution, Plant Genetics and Ecological Garden of the Department of Plant Life Science, Faculty of Science, University of Aleppo, between August and January 2019/2020. The aim of this research is to study the effect of graded concentrations (50, 100, 200) mg/l of lead elemental on some morphological and biochemical parameters of two varieties (LOBNA and KARMA) F1 hybrids of capsicum plant. The results showed a gradual decrease in all the morphological indicators of the treated plants for the two varieties compared to the control, as the length of the root decreased to (16.23 and 7) cm, the dry weight of the shoots was (1.72 and 0.193) g, and the dry weight of the roots were (0.461 and 0.034) g, and the leaf area decreased to (7.75 and 5.54) cm2, In varieties LOBNA and KARMA respectively, at the concentration of 200 mg/l of lead. The total chlorophyll content decreased to (2.32 and 5.18) mg/g, and the proline content increased to (1.319 and 1.125) μmol/g in the varieties LOBNA and KARMA respectively, at the concentration of 200 mg/l of lead. The results also showed that the sweet pepper variety was affected by lead more than the hot pepper variety.
Keywords: Pepper, Capsicum annuum L., Lead stress, Morphological Parameters, Chlorophyll, Proline.
Full paper in Arabic: pdf