Show simple item record

dc.contributor.authorRies, R. E.
dc.contributor.authorHofmann, L.
dc.date.accessioned2020-09-24T02:16:21Z
dc.date.available2020-09-24T02:16:21Z
dc.date.issued1991-07-01
dc.identifier.citationRies, R. E., & Hofmann, L. (1991). Research observations: Standardized terminology for structures resulting in emergence and crown placement of 3 perennial grasses. Journal of Range Management, 44(4), 404-407.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002409
dc.identifier.urihttp://hdl.handle.net/10150/644775
dc.description.abstractA significant problem we encountered in grass establishment research was confusion in the literature over seedling structures and terminology. From review of the historical literature and our observations of growth-chamber grown sideoats grama [Bouteloua curtipendula (Michx.) Torr.] western wheatgrass [Agropyron smithii Rydb.; new cytogenetic = Pascopyron smithii Rydb. (Loeve)l and smooth bromegrass (Bromus inermis Leyss.) seedlings, we suggest standard structures and terminology for grass seedlings. The nodes of a grass seedling are defined as the scutellar node, coleoptilar node, and leaf nodes named in sequence from first to last. The internode between the scutellar and coleoptilar nodes is termed the mesocotyl. The internode that develops inside the coleoptile between the coleoptilar and first leaf nodes is defined as the first leaf internode. Subsequent internodes are named for the leaf node immediately above; e.g., second leaf internode. Using these structures and terminology we found the "mechanism" of emergence for these grass seedlings from a 25-mm seeding depth was elongation of the mesocotyl (when expressed) and elongation of the coleoptile. Sideoats grama had a long mesocotyl and short coleoptile; western wheatgrass lacked or had a short mesocotyl and a long coleoptile; and smooth bromegrass had intermediate mesocotyl and coleoptile lengths. The "mechanism" of crown placement for seedlings that emerged and survived from a 51-mm seeding depth was non-elongation or elongation of the mesocotyl and leaf internodes. The crowns of sideoats grams seedlings were at the coleoptilar node, which was close to the soil surface. Western wheatgrass seedlings have their crowns near planting depth, usually at the coleoptilar node. Smooth bromegrass crowns were at variable depths because of variable elongation of the mesocotyl and leaf internodes.
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.subjectnodes
dc.subjectpascopyron smithii
dc.subjectinternodes
dc.subjectmesocotyls
dc.subjectcoleoptiles
dc.subjectterminology
dc.subjectBromus inermis
dc.subjectBouteloua curtipendula
dc.subjectseedling growth
dc.subjectplant morphology
dc.subjectseedling emergence
dc.subjectseedlings
dc.subjectplant anatomy
dc.subjectPascopyrum smithii
dc.titleResearch observations: Standardized terminology for structures resulting in emergence and crown placement of 3 perennial 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.volume44
dc.source.issue4
dc.source.beginpage404-407
refterms.dateFOA2020-09-24T02:16:21Z


Files in this item

Thumbnail
Name:
8630-8511-1-PB.pdf
Size:
1.154Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record