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首页> 外文期刊>Plant Pathology >Pathogenicity of Meloidogyne incognita and M.?javanica on recombinant inbred lines from a crossing of Cucurbita pepo subsp.pepo×?C.pepo subsp.ovifera
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Pathogenicity of Meloidogyne incognita and M.?javanica on recombinant inbred lines from a crossing of Cucurbita pepo subsp.pepo×?C.pepo subsp.ovifera

机译:Meloidogyne Incognita和M.?javanica在Cucurbita Pepo Subsp.pepo×c.pepo subsp.ovifera的交叉中重组自交系对重组自交系的致病性

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摘要

> The response of recombinant inbred lines ( RIL s) from a cross of zucchini?×?scallop ( Cucurbita pepo subsp. pepo ‘Murcia MUCU ‐16’?×? C. pepo subsp. ovifera ‘Scallop UPV ‐196’) to Meloidogyne incognita and M.?javanica was determined after completion of a nematode reproduction cycle in experiments carried out in a growth chamber. The nematode differentiated the C.?pepo genotypes at the subspecies level due to lower egg mass production on subspecies pepo than ovifera , and thus subspecies pepo was a poorer host than ovifera . In addition, Murcia MUCU ‐16 discriminated M.?incognita from M.?javanica in terms of egg masses ( EM ), eggs per gram of root and reproduction factor (Rf), whereas Scallop UPV ‐196 did so in eggs per gram of root and Rf. The RIL s differed in gall formation and EM production depending on the nematode?×?line combination. Comparisons between nematode isolates resulted in four significant combinations for pathogenic potential (galls/initial population (Pi)?×?100), seven for parasitic success (egg masses/Pi?×?100), and nine for host efficiency (egg masses/galls per root system?×?100) which included all the lines tested against both isolates. Lines that restricted nematode development by at least 90% were considered as having intermediate resistance to M.?incognita based on the definition of the International Seed Federation. They included lines 28‐1, 35A, 107A, 110‐3 and 153‐2. All the RIL s were susceptible hosts for M.?javanica . The information presented here will be helpful for nematode management and also for plant breeders working on pathogen resistance on C.?pepo .
机译: 重组自交系的响应( RIL S)来自夏南瓜的十字架?×?扇贝( Cucurbita Pepo 副。 pepo '穆尔西亚 MU - CU -16'?×? c。 Pepo 副。 ovifera '扇贝 UPV -196')到 meloidogyne incognita 和 m.?javanica 在进行在生长室中进行的实验中完成线虫再现循环后测定。线虫差异化 c.?pepo 由于亚种较低的鸡蛋批量生产,亚种级别的基因型 pepo 比 ovifera ,因此亚种 pepo 是一个贫穷的宿主 ovifera 。此外,穆尔西亚 MU - CU -16歧视 m.?incognita 从 m.?javanica 在蛋群众方面( EM ),每克根系和繁殖因子(rf)鸡蛋,而扇贝 UPV -196在每克根和rf卵中如此。这 RIL s不同于胆形成和 EM 生产取决于线虫?×?线组合。线虫分离物之间的比较导致致病潜力的四种显着组合(胆汁/初始群体(PI)?×10),七个用于寄生成功(蛋群/ pi?×100),以及九个主机效率(蛋群/每个根系统蜂窝?×?100)包括对两个隔离物测试的所有线。限制线虫开发至少90%的线被认为是具有中间抵抗的 m.?incognita 基于国际种子联合会的定义。它们包括线条28-1,35a,107a,110-3和153-2。一切 RIL S是易感主机 m.?javanica 。这里提出的信息将有助于线虫管理,也有助于植物育种者致力于病原体阻力 c.?pepo

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  • 来源
    《Plant Pathology》 |2019年第6期|共8页
  • 作者单位

    Instituto de Investigación y Formación Agraria y Pesquera – IFAPA La MojoneraParaje San Nicolás s/n 04745 Almería Spain;

    Instituto de Investigación y Formación Agraria y Pesquera – IFAPA La MojoneraParaje San Nicolás s/n 04745 Almería Spain;

    Instituto de Investigación y Formación Agraria y Pesquera – IFAPA Alameda del ObispoAv. Menéndez Pidal s/n 14004 Córdoba Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物病理学;
  • 关键词

    host efficiency; resistance; root‐knot nematode; scallop; zucchini;

    机译:宿主;阻力;根结线虫;扇贝;西葫芦;

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