Identification Of Resistant Sources To Leaf Rust and Powdery Mildew Disease in Oats

Year: 
2011
Discussion Committee: 
Dr. Munqez Shtaya - Supervisor
Dr. Hiba Al Fares - External Examiner
Dr. Hassan Abu Qaoud - Internal Examiner
Supervisors: 
Dr. Munqez Shtaya
Authors: 
Omar Issam Abed Allah Abu Baker
Abstract: 
A collection of 120 different accessions of oats from different countries in the region were kindly provided by the National Small Grains Collection, Idaho (NSGC), USA. A local wild accession collected from the experimental farm of the Faculty of Agriculture at Tulkarm, Palestine was used as a susceptible control. The main objectives of this study are to find new sources of resistance to oat leaf rust, and powdery mildew and to characterize the resistance to rust in oats under controlled conditions to study the components of resistance to the macroscopic level. During the 2008-2009 growing season the susceptible local accession (control accession) showed 56% DS (100% AUDPC) of powdery mildew. DS ranged from very high to very low, and the frequently distribution was markedly skewed towards low DS. During the same growing season the susceptible local accession (control accession) showed 48% DS (100% AUDPC) of rust. DS of rust ranged from very high to very low, and the frequently distribution was markedly skewed towards low DS. Nearly half of the collection displayed AUDPC < 50%. Thirteen of them, with AUDPC ≤ 20% (10.8% of the collection), were selected to study their reaction to leaf rust at seedling stage. These resistant accessions were selected and grown in the field to obtain seeds for further studies.
Pages Count: 
53
Status: 
Published