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首页> 外文期刊>Genetic Resources and Crop Evolution >Genetic diversity of Jatropha curcas L. in Senegal compared with exotic accessions based on microsatellite markers
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Genetic diversity of Jatropha curcas L. in Senegal compared with exotic accessions based on microsatellite markers

机译：塞内加尔麻疯树的遗传多样性与基于微卫星标记的外来种质的比较

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Significant efforts have been undertaken in West Africa to increase biofuel production with the expectation to alleviate the dependency on fossil energies and to reduce rural poverty by diversifying cultivated crops. In this context, Jatropha curcas L., a shrub belonging to Euphorbiaceae family, has gained great interest because of its oil which can be converted to biodiesel. It is also highly adaptable to marginal soils due to its drought-tolerant characteristics. Characterisation of J. curcas germplasm in Senegal could be an important input for its better management and in identifying genotypes that could be used in breeding program. Genetic diversity of 103 accessions including 82 accessions from different agro ecological zones in Senegal and 21 exotic accessions was assessed through 33 microsatellite markers. All the markers gave amplifications at the expected band size. Only one microsatellite marker, JCT17, was polymorphic showing 3 alleles and allows distinguishing 2 accessions from Burkina Faso. The surprisingly low level of genetic variation might be because introduction of J. curcas in Senegal seems to have been done from one or a few origins and the species has not regained genetic diversity since then due to vegetative propagation. Cultivation of J. curcas at large scale may face to vulnerability to pests and require many cautions. They are necessity to widen the genetic base of J. curcas in Senegal via new introductions from its centre of origin
机译：西非已作出重大努力以增加生物燃料产量，以期减轻对化石能源的依赖，并通过使耕作作物多样化来减少农村贫困。在这种情况下，属于大戟科的灌木麻风树（Jatropha curcas L.）因其可以转化为生物柴油的油而备受关注。由于其耐旱的特性，它也非常适合边缘土壤。塞内加尔J. curcas种质的表征可能是对其更好管理和鉴定可用于育种计划的基因型的重要投入。通过33个微卫星标记评估了103个种质的遗传多样性，其中包括来自塞内加尔不同农业生态区的82个种质和21个外来种质。所有标记均在预期的条带大小处扩增。只有一个微卫星标记JCT17是多态性的，显示3个等位基因，可以区分2个来自布基纳法索的种质。令人惊讶的低水平的遗传变异可能是因为在塞内加尔引入了麻疯树（J. curcas）是从一个或几个起源开始的，此后由于营养繁殖，该物种没有恢复遗传多样性。大规模种植麻疯树可能面临有害生物的脆弱性，需要多加注意。他们有必要通过从其起源中心的新引进来扩大塞内加尔J. curcas的遗传基础。

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