Evaluations of shallot genotypes for resistance against fusarium basal rot (Fusarium oxysporum f. sp. cepae) disease

Publication year: 2011
Source: Crop Protection, In Press, Corrected Proof, Available online 14 June 2011

Assefa, Sintayehu , Chemeda, Fininsa , Seid, Ahmed , P.K., Sakhuja

Fusarium basal rot (FBR) caused by Fusarium oxysporum f. sp. cepae (Foc) is one of the most significant production constraint to shallot. Field experiment was conducted in a naturally Foc infested soil at Debre Zeit Agricultural Research Center during 2006 and 2007 cropping seasons to evaluate the level of resistance of sixteen shallot genotypes against FBR disease. Treatments were arranged in randomized complete block design with four replications. The genotypes significantly varied in their susceptibility to FBR and yield. They were grouped into tolerant, moderately and highly susceptible types. Five genotypes (DZ-Sht-168-1A, DZ-Sht-157-1B, Huruta, Negelle and DZ-Sht-169-1b) were identified to be…

 Highlights: ► Fusarium basal rot disease is most significant constraint to shallot production. ► The promising genotype DZ-Sht-168-1A reduced disease severity by 32.5%. ► Tolerant genotypes increased yield by 5 t ha−1 compared to highly susceptible. ► Tolerant genotypes in ground & wire mesh storage reduced bulb rot by 48% & 30%.