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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >Resistance of winter wheat to Heteroderafilipjevi in Turkey
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Resistance of winter wheat to Heteroderafilipjevi in Turkey

机译：土耳其冬小麦对Heteroderafilipjevi的抗性

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摘要

Cereal cyst nematodes (CCNs) are plant parasites that significantly limit global cereal production. The most frequently reported pathogenic species are Heterodera avenae, H.filipjevi, and H. latipons. One of the most cost-effective, environmentally friendly, and easily adopted control measures is the use of genetic host resistance, which maintains nematode populations below the economic damage threshold level. Many effective sources of resistance to CCNs have been identified in cereals; however, their effectiveness and usefulness is dependent on the interaction of the specific putative resistant accession and the CCN pathotype found in a specific region. In this study, 719 wheat lines from the Facultative and Winter Wheat Observation Nurseries, representing a broad geographical spectrum of breeding lines and varieties from Europe, Central Asia, and the International Winter Wheat Improvement Program, were screened against H.filipjevi under controlled conditions. The results indicated that 114 and 90genotypes were ranked resistant and moderately resistant, representing 15.8% and 12.5% of the screened genotypes, respectively. The frequency of resistant genotypes observed in the germplasms varied significantly among the different original countries and was the highest for genotypes that originated from Bulgaria (59.3%). From those phenotyped germplasms, a set of 289 lines was genotyped to understand if resistance sources are located at the same site or originate from different locations in the genome.
机译：谷物囊肿线虫（CCN）是严重限制全球谷物生产的植物寄生虫。报道最频繁的致病物种是Heterodera avenae，H.filipjevi和H. latipons。使用遗传宿主抗性是成本效益最高，对环境友好且易于采用的控制措施之一，可将线虫种群保持在经济损害阈值以下。谷物中发现了许多有效的抗CCNs的来源。然而，它们的有效性和有用性取决于特定推定抗性种质与在特定区域发现的CCN病态的相互作用。在这项研究中，在受控条件下筛选了719株小麦系，它们来自兼性和冬小麦观测苗圃，这些品种代表了来自欧洲，中亚和国际冬小麦改良计划的广泛育种和品种的地理分布。结果表明114和90个基因型被定为抗药性和中度抗药性，分别代表所筛选基因型的15.8％和12.5％。在原始国家中，在种质中观察到的抗性基因型的频率差异很大，并且对于起源于保加利亚的基因型来说是最高的（59.3％）。从这些表型种质中，对一组289个品系进行了基因分型，以了解抗性来源是位于同一位点还是源自基因组的不同位置。

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