Evaluation of Stripe Rust (Puccinia Striformis f. sp.
Tritici) Resistance in Bread Wheat (Triticum aestivum L.)
Genotypes in Ethiopia
Volume 9 - Issue 3
Alemu Ayele*, Getnet Muche, Tamirat Negash, Lidiya Tilahun, Hawila Tesfaye, Daniel Kassa, Fikrte Yirga and Shumi
Regassa
- Ethiopian Institute of Agricultural Reseasrch (EIAR) Kulumsa Agricultural Research Center Assela Ethiopia
Received: April 21, 2021; Published: May 17, 2021
Corresponding author: Alemu Ayele, Ethiopian Institute of Agricultural Reseasrch (EIAR) Kulumsa Agricultural Research Center
Assela Ethiopia
DOI: 10.32474/CIACR.2021.09.000316
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Abstract
Adult Plant Resistance (APR) based on partial resistance is an important and effective way to combat yellow rust (Puccinia
striiformis) in wheat production. The objective of current research was planned to evaluate the response of 436 wheat (Triticum
aestivum) genotypes against yellow rust resistance under field conditions during 2020 main cropping season. Over locations,
Partial resistance screening was evaluated through Final Rust Severity (FRS), Area under Disease Progress Curve (AUDPC),
Infection Rate (r), Coefficient of Infection (CI), Relative Area under Disease Progress Curve (rAUDPC) and field reaction have used
for differentiating Adult plant resistances.
Responses of four hundred thirty six genotypes, one hundred fourteen wheat lines were high adult plant resistance, two
hundred thirty three lines were found to be intermediate adult plant resistant and two hundred eighty one were low adult plant
resistance. With rAUDPC values over location twenty seven were 1-10 shown resistant, eighty seven lines were 11-30 categorized
as moderately susceptible and three hundred twenty two genotypes exhibited susceptible response against yellow rust with more
than 31-100 rAUDPC value. High values above 30 of rAUDPC showed greater severity of yellow rust on wheat genotypes while lower
rAUDPC values indicated resistance to yellow rust. Fifty bread wheat genotypes that were selected based on overall agronomic
performance (biomass, spike length, number of spikes/m2, tillering capacity, stalk strength or lodging resistance, shattering
resistance and diseases resistance especially Septoria blotch and yellow rust. Three genotypes were EBW192345, EBW192346 and
EBW192347 extraordinarily out performed evaluated materials phenotypically in terms of agronomic performance and diseases
resistance over locations. The present study revealed that the lines were having enough diversity regarding slow rusting behavior
and yellow rust resistance, ranging from immunity to partial resistant lines. Present research provided the resistant wheat lines to
the breeders to incorporate in their breeding program against yellow rust.
Keywords: Bread Wheat; Yellow rust; Partial resistance; Adult Plant Resistance
Abstract|
Introduction|
Materials And Methods|
Results And Discussion|
Area under disease progress curve (AUDPC) and
relative area under disease progress curve (RAUDPC)|
Conclusion|
Acknowledgements|