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首页> 美国卫生研究院文献>Journal of Nematology >Distribution and Prevalence of Parasitic Nematodes of Cowpea (Vigna unguiculata) in Burkina Faso
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Distribution and Prevalence of Parasitic Nematodes of Cowpea (Vigna unguiculata) in Burkina Faso

机译：布基纳法索的pea豆（Vigna unguiculata）寄生线虫的分布和流行

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A comprehensive survey of the plant parasitic nematodes associated with cowpea (Vigna unguiculata) production fields was carried out in the three primary agro-climatic zones of Burkina Faso in West Africa. Across the three zones, a total of 109 samples were collected from the farms of 32 villages to provide a representative coverage of the cowpea production areas. Samples of rhizosphere soil and samples of roots from actively growing cowpea plants were collected during mid- to late-season. Twelve plant-parasitic nematode genera were identified, of which six appeared to have significant parasitic potential on cowpea based on their frequency and abundance. These included Helicotylenchus, Meloidogyne, Pratylenchus, Scutellonema, Telotylenchus, and Tylenchorhynchus. Criconemella and Rotylenchulus also had significant levels of abundance and frequency, respectively. Of the primary genera, Meloidogyne, Pratylenchus, and Scutellonema contained species which are known or suspected to cause losses of cowpea yield in other parts of the world. According to the prevalence and distribution of these genera in Burkina Faso, their potential for damage to cowpea increased from the dry Sahelian semi-desert zone in the north (annual rainfall < 600 mm/year), through the north-central Soudanian zone (annual rainfall of 600-800 mm/year), to the wet Soudanian zone (annual rainfall ≥ 1000 mm) in the more humid south-western region of the country. This distribution trend was particularly apparent for the endoparasitic nematode Meloidogyne and the migratory endoparasite Pratylenchus.
机译：在西非布基纳法索的三个主要农业气候区，对与cow豆（Vigna unguiculata）生产田地相关的植物寄生线虫进行了全面调查。在这三个区域中，从32个村庄的农场中总共采集了109个样本，以代表性地覆盖了pea豆产区。在季节中期到后期，收集了根际土壤样品和活跃生长的cow豆植物的根样品。确定了十二种植物寄生线虫属，根据其频率和丰度，其中六个似乎在cow豆上具有明显的寄生潜能。这些包括Helicotylenchus，Meloidogyne，Pratylenchus，Scutellonema，Telotylenchus和Tylenchorhynchus。 criconemella和Rotylenchulus也分别具有显着水平的丰度和频率。在主要属中，Meloidogyne，Pratylenchus和Scutellonema所含物种已知或怀疑会导致世界其他地区of豆产量下降。根据这些属在布基纳法索的流行和分布，它们对cow豆的破坏潜力从北部干燥的萨赫勒半沙漠带（年降雨量<600 mm /年）到中北部的苏达尼亚带（每年雨量为600-800毫米/年），到达该国西南部较湿润的Soudanian带（年降水量≥1000毫米）。这种分布趋势对于内寄生线虫Meloidogyne和迁徙性内寄生虫Pratylenchus尤其明显。

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