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This study was financed by International Centre for Agricultural Research in the Dray Areas (ICARDA) through ADA project (Austrian Development Agency).
The authors declare that they have no competing interests.
The authors are thankful to Daniel Admasu, Zerihun Kebede, Kibnesh Girma and Fikrey Tesfaye for assistance in field work, laboratory work and write up. They thank Holleta Agricultural Research Center for providing us with faba bean seeds.