Morphological Variability and Races of Fusarium oxysporum f.sp. ciceris Associated with Chickpea (Cicer arietinum) Crops | Science Publications

American Journal of Agricultural and Biological Sciences

Martin Esqueda¹  Aldo Gutierrez¹  Rosa M. Arvayo-Ortiz¹  Alfonso Sanchez¹  Evelia Acedo-Felix¹ 

关键词: Phenotype;    root rot;    vascular wilt;    Fusarium oxysporum;    pathotypes;    characteristics;    cropfields microscopic northwestern;    temperature;    chemical;    macroconidia;    potassium;    Polymerase Chain Reaction (PCR);    FOC;    Cicer arietinum;   

DOI  :  10.3844/ajabssp.2011.114.121

学科分类：农业科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: Mexico is the third largest producer and exporter of chickpea (Cicerarietinum), with the states of Sinaloa and Sonora accounting for 70 and 20% of Mexicos production,respectively. The most damaging disease affecting this species is caused by Fusarium oxysporum f.sp.Ciceris (FOC), which causes losses of up to 60% in Sonora. The objective of this study was to isolateand characterize the phenotype and genetics of FOC collected from affected chickpea plants innorthwestern Mexico and to identify the abiotic factors that allow it to develop. Approach: Samplingfocused on affected plants from 12 crops in Sonora and Sinaloa. Based on 355 isolated strains, usingPolymerase Chain Reaction (PCR) 161 were positive for FOC. Results: Of the 161 strains, 91 wereidentified as races previously recorded for the Americas: Yellowing (R0 (41%), R1B/C (15%) andwilting (R5 (14%) and R6 (28%) reflecting the symptoms observed in the areas sampled. The other 70isolates could be nonpathogenic, or could be races yet to be recorded for the Americas. Conclusion:Morphological variability in FOC was high in the main chickpea producing regions in northwesternMexico and was not a function of the physical and chemical properties of the soil, nor of thegeographic location of the cropfields. This is the first report of races of FOC in Mexico.

【 授权许可】

Unknown