Varieties’ Response of Vegetable Cowpea to Mechanical Inoculation of Cowpea Aphid-Borne Mosaic Virus in Burkina Faso

Antoine Barro, Joseph Nanama, ZinmanKé Coulibaly, Z. Dieni, M. Cordea
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Abstract

Vegetable cowpea is eaten mainly fresh, in the form of young, immature pods, tender and sweet like the common bean. However, like cowpea with seeds, vegetable cowpea experience yield losses due to the cowpea aphid-borne mosaic virus (CABMV). This study aims to improve yields through the development of vegetable cowpea varieties resistant to CABMV. The study focused on ten varieties of vegetable cowpea, carried out in a greenhouse at the Kamboinsé research station using a randomized complete block design with three replications, all inoculated with CABMV. The data collection concerned resistance parameters. Mechanical inoculation made it possible to observe various symptoms of CABMV, thus highlighting the existence of variability within the varieties tested. Strong correlations were observed between several variables. Thus, the varieties of vegetable cowpea IT85F-2089-5, UG-CP-8, IT85F-2805-5 and Telma were identified as resistant, because belonging to the low severity classes and having a low value of area under the disease progress curve. On the other hand, the varieties RW-CP-5, UG-CP-6, IT83S-911, niébé baguette grimpant possessing a high severity class were judged to be susceptible. These resistant varieties will thus be able to contribute to the improvement of production and the protection of cowpea resources in Burkina.
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布基纳法索蔬菜豇豆品种对机械接种豇豆蚜虫传播花叶病毒的反应
蔬菜豇豆主要是新鲜的,以年轻,未成熟的豆荚的形式,像普通豆一样嫩而甜。然而,与有种子的豇豆一样,蔬菜豇豆因豇豆蚜虫传播的花叶病毒(CABMV)而遭受产量损失。本研究旨在通过开发抗CABMV的菜用豇豆品种来提高产量。该研究以10个蔬菜豇豆品种为研究对象,采用随机完全区组设计,在kamboinse研究站的一个温室中进行了3个重复,均接种了CABMV。数据收集涉及电阻参数。机械接种可以观察到CABMV的各种症状,从而突出了所测品种之间存在的变异性。在几个变量之间观察到很强的相关性。因此,蔬菜豇豆IT85F-2089-5、UG-CP-8、IT85F-2805-5和Telma因属于低严重等级,且病害进展曲线下面积值较低,被确定为抗病品种。另一方面,RW-CP-5、UG-CP-6、IT83S-911、nisamb法棍夹心胶黏剂具有高严重等级,被判定为易感品种。因此,这些抗药品种将有助于改善生产和保护布基纳法索的豇豆资源。
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审稿时长
8 weeks
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