Reem Al Mansour^(1)*

(1). Homs Research Center, General Commission for Scientific Agricultural Research, Syria.

(*Corresponding author: Dr. Reem Al Mansour, E-Mail: reemalmansour2@yahoo.com)

Received: 25/01/2022         Accepted: 18/04/2022

Abstract: 

 A field experiment was conducted at Homs Research Center, General Commission for Scientific Agricultural Research to evaluate many genotypes of maize included inbred lines of Maize (IL-197, IL-90, IL-29, IL-200, IL-339, IL-239, and their produced crosses and Check variety Ghota 82 under and full irrigation and drought stress conditions applied at tasselling with randomized complete block design (RCBD) with three replications. Results showed that all the studied characters were affected negatively and significantly under drought stress comparable with full irrigation conditions. All the studied traits (ear length, ear diameter, number of rows per a ear, number of kernals per a row, 100 kernal weight, grain yield) decreased by 15.14%, 10.99%, 13.48%, 26.66%, 13.09% and 54.41%, respectively for the inbred lines, and 19.64% , 13.12% , 15.63% , 22.70% , 14.95% , 46.18%, respectively for the other genotypes. Some genotypes showed superiority in both conditions in many traits like (P1, P2, P6, P4, P2×P4, P3×P4, P2×P3, P1×P2, P1×P4, P2×P5). Hence it can be used in plant breeding programs for drought stress and treat the produced crosses in productivity efficiency trails.

key words: Maize, drought stress, grain yield.  

Full paper in Arabic: pdf