Identification of Fusarium Species Associated with Onion(Allium cepa L.)Plants in Field in Burkina Faso

作     者：Konwende Raissa Kintega P.Elisabeth Zida Vianney W.Tarpaga Philippe Sankara Paco Sereme 

作者机构：Laboratoire de Phytopathologie Institute de l’Environnement et de Recherches Agricoles(INERA)OuagadougouBurkina Faso Universite Joseph Ki-ZERBOOuagadougouBurkina Faso 

出 版 物：《Advances in Bioscience and Biotechnology》 (生命科学与技术进展（英文）)

年 卷 期：2020年第11卷第3期

页      面：94-110页

学科分类：09[农学] 0904[农学-植物保护] 

基　　金：the Congregation of the Sisters of the Immaculate Conception of Ouagadougou(S.I.C.O.)and the Institute of Environment and Agricultural Research(INERA)for their financial support for this work 

主　　题：Allium cepa Fusarium Molecular Identification Biometric Characterization Fungal Rot 

摘      要：Many fungi limit onion production in Burkina Faso. This study aims to identify the main Fusarium species associated with onion plant in field in order to determine those involved in seedling damping-off and bulb rot, and develop adequate management strategies of these diseases. For this purpose, 36 isolates of Fusarium were isolated from onion plants in 17 sites and subjected to molecular analysis and biometric characterization. The results revealed that the isolates belong to five Fusarium species: Fusarium oxysporum (44.44% of the isolates), Fusarium proliferatum (41.66%), Fusarium solani (5.55%), Fusarium fujikuroi (5.55%) and Fusarium thapsinum (2.77%). Fusarium oxysporum, F. proliferatum, F. solani and F. fujikuroi had faster mycelial development, with a growth rate of 7.72 - 8.27 mm/d, than F. thapsinum (6.52 mm/d). Conidia of F. oxysporum, F. proliferatum and F. solani were longer (4.74 - 5.96 μm) than those of F. fujikuroi and F. thapsinum (3.20 - 4.04 μm). Fusarium solani and F. oxysporum, respectively, had the largest and most partitioned conidia.