Triticum monococcum subsp. monococcum and aegilopoides: new sources of resistance to the dipteran pest, Hessian fly (Diptera: Cecidomyiidae)

文献类型： 外文期刊

第一作者： Liu, Aifeng

作者： Liu, Aifeng;Li, Hongwei;Liu, Aifeng;Nemacheck, Jill A.;Subramanyam, Subhashree;Nemacheck, Jill A.;Subramanyam, Subhashree;Li, Hongwei;Anderson, Kirk M.;Harris, Marion O.;DeWitt, Noah;Xu, Steven S.

作者机构：

关键词： wheat; cereal grass; gall midge; plant resistance; insect virulence

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.4； 五年影响因子：2.4 ）

ISSN： 0022-0493

年卷期： 2024 年 117 卷 6 期

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收录情况： SCI

摘要： The Hessian fly, Mayetiola destructor (Say) belonging to the order Diptera (family: Cecidomyiidae), is a destructive pest of host wheat (Triticum aestivum L.) causing significant economic losses. Although planting resistant wheat cultivars harboring an effective Hessian fly resistance gene (H) is the most economical and environmentally friendly pest management strategy, it imposes selection pressure on the insect populations and can lead to the evolution of Hessian fly virulence. This results in the eventual failure of the deployed H gene. New sources and novel types of resistance are urgently needed to expand the repertoire of H genes and enable strategies that are more effective and durable over the long-term. New sources of Hessian fly resistance have been identified from tetraploid (T. turgidum L., AABB) and hexaploid (T. aestivum, AABBDD) wheat species, as well as from wheat's D-genome donor (Aegilops tauschii Coss., DD). In contrast, diploid einkorn wheat (T. monococcum L., AA) has not been extensively explored for Hessian fly resistance. In this study, we phenotyped 506 T. monococcum accessions belonging to 2 subspecies, T. monococcum L. subsp. monococcum (205 accessions) and T. monococcum subsp. aegilopoides (Link) Thell. (301 accessions), for resistance against 2 predominant Hessian fly biotypes, L and GP (Great Plains). Three and 6 accessions belonging to subsp. monococcum and aegilopoides, respectively, showed>70% resistance. These accessions provide additional resources for improving wheat cultivars as mitigating strategies for Hessian fly management.

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