Research Gaps and Challenges in the Conservation and Use of North American Wild Lettuce Germplasm

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dc.creatorLebeda, Aleš
dc.creatorKřístková, Eva
dc.creatorKitner, Miloslav
dc.creatorMajeský, Ľuboš
dc.creatorDoležalová, Ivana
dc.creatorKhoury, Colin K.
dc.creatorWidrlechner, Mark P.
dc.creatorHu, Jinguo
dc.creatorCarver, Daniel
dc.creatorAchicanoy Estrella, Harold Armando
dc.creatorSosa, Chrystian C.
dc.date2019-11
dc.date2019-10-25T19:19:06Z
dc.date2019-10-25T19:19:06Z
dc.date.accessioned2026-06-27T14:33:11Z
dc.descriptionThe North American crop wild relatives (CWR) of lettuce (Lactuca L.) represent an underexplored pool of genetic diversity of potential value to breeding programs. The 10 species belong to three different groups: a native clade including at least six allotetraploid species [L. biennis (Moench) Fernald, L. canadensis L., L. floridana (L.) Gaertn., L. graminifolia Michx., L. hirsuta Muhl. ex Nutt., and L. ludoviciana (Nutt.) Riddell], a diploid clade with one species [L. tatarica (L.) C. A. Mey. subsp. pulchella (Pursh) Stebbins], and a clade related to the cultivated taxon (L. sativa L.) with three non-native species (L. saligna L., L. serriola L., and L. virosa L.). In this review, we examine the role of herbarium and genebank holdings in taxonomic and other foundational studies, as well as for germplasm exploration and use. We compile the state of knowledge on the ranges of lettuce CWR in North America, modeling the potential distributions of the species and assessing their ex situ and (for native species) in situ conservation status. We categorize seven of the species as high priority for further conservation and three as medium priority, with none currently considered low priority or sufficiently conserved. Further, we review morphological, phenological, genetic diversity, and pest and disease information with regard to North American species. We conclude by outlining the critical gaps and describing a way forward for addressing challenges in the conservation and use of North American wild lettuce germplasm.
dc.identifierhttps://hdl.handle.net/10568/105522
dc.identifier.urihttp://hdl.handle.net/123456789/81512
dc.languageen
dc.publisherWiley
dc.rightsOpen Access
dc.sourceLebeda, Aleš ; Křístková, Eva ; Kitner, Miloslav ; Majeský, Ľuboš ; Doležalová, Ivana ; Khoury, Colin K. ; Widrlechner, Mark P. ; Hu, Jinguo ; Carver, Daniel ; Achicanoy, Harold A. & Sosa, Chrystian C. (2019). Research Gaps and Challenges in the Conservation and Use of North American Wild Lettuce Germplasm. Crop Science, 59: 1-20 p.
dc.subjectgene banks
dc.subjectlactuca
dc.subjectconservation
dc.subjectnorth america
dc.subjectphenotypic
dc.subjectgenetic variation
dc.subjectplant diseases
dc.subjectbotanical gardens
dc.subjectex-situ conservation
dc.subjectherbaria
dc.titleResearch Gaps and Challenges in the Conservation and Use of North American Wild Lettuce Germplasm
dc.typeJournal Article

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Centro Internacional de Agricultura Tropical (CIAT)