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dc.contributor.authorTischler, C. R.
dc.contributor.authorVoigt, P. W.
dc.date.accessioned2020-09-23T19:03:57Z
dc.date.available2020-09-23T19:03:57Z
dc.date.issued1993-09-01
dc.identifier.citationTischler, C. R., & Voigt, P. W. (1993). Characterization of crown node elevation in Panicoid grasses. Journal of Range Management, 46(5), 436-439.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002663
dc.identifier.urihttp://hdl.handle.net/10150/644527
dc.description.abstractIn Panicoid grasses, elevation of the crown node above the soil surface caused by excessive subcoleoptile internode elongation is detrimental to seedling establishment. We describe a technique to screen grass seedlings for excessive crown node elevation. Seed of 11 perennial grass cultivars were germinated and grown in a plywood box 1.2 X 1.2 X 1.2 m at an irradiance of 1.5 micromole m-2 sec-1 at 30 degrees C. A subset of 8 grasses were grown similarly but at an irradiance of 0.75 micromole m-2 sec-1. Elevation of crown nodes above the growth media and shoot length (from crown node to leaf tip) were measured 7 days after planting. The crown nodes of 4 Eragrostis species were not elevated above the soil surface, while other species had mean crown node elevations of 1 cm or more. Relative ranking of crown node elevation was similar for a species within each light level, but response to change in light intensity was not consistent across species. Sideoats grama (Bouteloua curtipendula (Michx.) Torr.), blue grama (Bouteloua gracilis (H.B.K. Lag. ex Steud.)), and kleingrass (Panicum coloratum L.) exhibited significant crown node elevation in this system. Estimates of genetic variation based on comparison of apomictic and sexual grasses within this group suggest that substantial genetic variation exists for excessive subcoleoptile internode elongation and that progress by selection for lower crown node placement should be possible in most of the grasses studied. This system allows characterization of grasses for extent of crown node elevation and is being used in a recurrent selection protocol to select for lower crown node placement.
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.subjecthabit
dc.subjectsubcoleoptile internode
dc.subjectcoleoptiles
dc.subjectspecies differences
dc.subjectgrowth
dc.subjectgrasses
dc.titleCharacterization of crown node elevation in Panicoid grasses
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.volume46
dc.source.issue5
dc.source.beginpage436-439
refterms.dateFOA2020-09-23T19:03:57Z


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