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dc.contributor.authorBerdahl, J. D.
dc.contributor.authorHewitt, G. B.
dc.contributor.authorMiller, R. H.
dc.date.accessioned2020-09-24T02:38:39Z
dc.date.available2020-09-24T02:38:39Z
dc.date.issued1990-05-01
dc.identifier.citationBerdahl, J. D., Hewitt, G. B., & Miller, R. H. (1990). Recurrent phenotypic selection for low grasshopper food preference in rangeland alfalfa. Journal of Range Management, 43(3), 216-219.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/3898676
dc.identifier.urihttp://hdl.handle.net/10150/644910
dc.description.abstractGrasshopper [Melanoplus spp. and Cannula Pellucida (Scudder)] feeding is an important factor that can prevent establishment and reduce yields of alfalfa [Medicago sativa subsp. X varia (Martyn) Arcang.] interseeded into semiarid rangelands of the northern Great Plains. Objectives of this study were to determine narrow-sense heritability estimates of grasshopper preference for an alfalfa population and to develop low-preference alfalfa germplasm adapted to rangeland use. The base population was derived from 5 cultivars and an experimental strain, all of M. sativa L. subsp. sativa X M. sativa subsp. falcata (L.) Arcang. parentage, that had been developed for rangeland use in the northern Great Plains. Except for cycle 4 which was conducted in a greenhouse, each cycle of recurrent phenotypic selection involved transferring replicated half-sib families of 6- to 8-week-old plants in flats to a field site with a heavy infestation of grasshoppers. Half-sib families were scored for defoliation when the entire population was at least 50% defoliated. Narrow-sense heritability estimates of defoliation under greenhouse conditions for 31 half-sib families and their respective parents ranged from 45 to 58%, depending on how defoliation from the multi-specks grasshopper populations was measured. Alfalfa populations produced from cycles 1, 3, and 5 of recurrent phenotypic selection were evaluated simultaneously under greenhouse conditions with a common grasshopper population and rated for defoliation on a scale from 1-5 where 1 = 0-20% and 5 = 81-100% defoliation. Mean defoliation decreased significantly (P<0.05) from 3.83 to 3.25 from cycle 1 to cycle 3, but the small decrease from 3.25 to 3.15 from cycle 3 to cycle 5 was not significant. The lack of progress from cycle 3 to cycle 5 was attributed to a major change in species composition of the grasshopper populations used in the selection process.
dc.language.isoen
dc.publisherSociety for Range Management
dc.relation.urlhttps://rangelands.org/
dc.rightsCopyright © Society for Range Management.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectplant pests
dc.subjectstrains
dc.subjectMelanoplus
dc.subjectpest resistance
dc.subjectgermplasm
dc.subjectMedicago sativa
dc.subjectheritability
dc.subjectcultivars
dc.subjectSouth Dakota
dc.subjectfeeding behavior
dc.subjectdefoliation
dc.subjectOrthoptera
dc.titleRecurrent phenotypic selection for low grasshopper food preference in rangeland alfalfa
dc.typetext
dc.typeArticle
dc.identifier.journalJournal of Range Management
dc.description.noteThis material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.
dc.description.collectioninformationThe Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform August 2020
dc.source.volume43
dc.source.issue3
dc.source.beginpage216-219
refterms.dateFOA2020-09-24T02:38:39Z


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