Muhammad Nour Al-Assaf (1)*, Jalal Abboud(2),Abdullah Al-Youssef(3),Thamer Al-Hanish (4), Ahmad Shams Al-Dien Shaaban (2), Ahmed Khalil (2),Najwa Al-Sheikh (2), and Ruba Al-Youssef(2)
(1). Cotton Research Department, GCSAR, Syria.
(2). Al-Jamasa Station, Scientific Agricultural Research Center in Tartous, Syria. .
(3) . Center for Scientific Agricultural Research in Aleppo, GCSAR, Syria.
(4). Administration of Crop Research, GCSAR, Syria.
(5) . University of Aleppo, Faculty of Agriculture, Syria.
(*Corresponding author: Muhammad Nour Al-Assaf, E-Mail assafnoor57@gmail.com ).
Received: 7/06/2024 Accepted: 20/10/2024
Abstract:
Yellow rust is one of the major factors that affects in the bread wheat production in Syria. The study was conducted at the Al-Jamasa Research Station of the Scientific Agricultural Research Center in Tartous during the two seasons (2021/2022) and (2022/2023), with the aim of evaluating and selecting promising lines of Bread wheat that tolerant to yellow rust caused by the fungus Puccinia striiformis West. f. sp. tritici Eriks under natural infestation conditions of the yellow rust fungus community for yield components (spike length, number of grains/spike, grain weight/spike and weight of 1000 grains) in addition to its resistance to yellow rust disease. The study showed an improvement in the yield components characteristics of the three cultivated cultivars (Cham6, Cham8, Cham10), in addition to improving their resistance to yellow rust disease, by selecting promising lines resulting from crossing them with resistant genotypes. (47) Promising lines were selected with high yield characteristics in addition to their resistance to the disease. Seven promising lines (38, 39, 60, 70, 82, 95, 184) resulting from four crosses (Cham10× Babacha), (Cham8× Babacha), (Cham6× Babacha), (Avocet yr15× Babacha), respectively, showed a tolerant reaction to yellow rust disease. The 7 lines (56, 57, 63, 83, 94, 97, 101) were also characterized by the highest average spike length and number and weight of grains/spike. as were the 12 lines numbers (111, 122, 132, 133, 140, 144, 145, 146, 147, 148, 149, 150) resulting from selection within isolated populations of the cross (Avocet yr5×Cham8) with higher averages for all yield traits studied, which shows the importance of genetic resistance to yellow rust in maintaining yield traits.
Keywords: Bread Wheat, Yellow Rust, Resistance, yield and its components.
Full paper in Arabic: pdf