Towards new sources of resistance to the currant-lettuce aphid (Nasonovia ribisnigri)

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• 作者：Peter G. Walley ; Gemma Hough ; Jonathan D. Moore ; John Carder…
• 关键词：Lettuce ; Diversity ; SNP ; Aphid ; Association ; Resistance
• 刊名：Molecular Breeding
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：37
• 期：1
• 全文大小：2407KB
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Plant Sciences; Plant Genetics & Genomics; Plant Pathology; Plant Physiology; Biotechnology;
• 出版者：Springer Netherlands
• ISSN：1572-9788
• 卷排序：37

文摘

Domesticated lettuce varieties encompass much morphological variation across a range of crop type groups, with large collections of cultivars and landrace accessions maintained in genebanks. Additional variation not captured during domestication, present in ancestral wild relatives, represents a potentially rich source of alleles that can deliver to sustainable crop production. However, these large collections are difficult and costly to screen for many agronomically important traits. In this paper, we describe the generation of a diversity collection of 96 lettuce and wild species accessions that are amenable to routine phenotypic analysis and their genotypic characterization with a panel of 682 newly developed expressed sequence tag (EST)-linked KASP™ single nucleotide polymorphism (SNP) markers that are anchored to the draft Lactuca sativa genome assembly. To exemplify the utility of these resources, we screened the collection for putative sources of resistance to currant-lettuce aphid (Nasonovia ribisnigri) and carried out association analyses to look for potential SNPs linked to resistance.