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dc.contributor.authorJohnson, D. A.
dc.contributor.authorAguirre, L.
dc.date.accessioned2020-09-24T02:06:42Z
dc.date.available2020-09-24T02:06:42Z
dc.date.issued1991-07-01
dc.identifier.citationJohnson, D. A., & Aguirre, L. (1991). Effect of water on morphological development in seedlings of three range grasses: Root branching patterns. Journal of Range Management, 44(4), 355-360.
dc.identifier.issn0022-409X
dc.identifier.doi10.2307/4002398
dc.identifier.urihttp://hdl.handle.net/10150/644699
dc.description.abstractRoot morphology is important for successful seedling establishment and survival on semiarid rangelands. This study was conducted to determine the response of early seedling root morphological development of 'Hycrest' [Agropyron desertorum (Fisch. ex Link) Schult. X A. cristatum (L.) Gaert.], 'Whitmar' [Pseudoroegneria spicata (Pursh) Loeve], and cheatgrass (Bromus tectorum L.) to water. A greenhouse line-source sprinkler system provided a gradient of water application (77, 66, 37, and 5 ml/day). Root morphology was examined at 15, 30, and 45 days after seedling emergence. Order of branching of roots associated with the first foliar node was greater in cheatgrass than in Hycrest or Whitmar at all water applications and dates. Length of the primary root, length of the second group of seminal roots, and length of the first group of adventitious roots were similar in cheatgrass and Hycrest. Root branching for the 3 species decreased as less water was applied, except for cheatgrass irrigated with 5 ml/day. The ability of cheatgrass seedlings to grow with little water was related to their greater order of branching of seminal roots, branching density on the main axis, and length of lateral roots and external-external links. The greater root branching densities, lateral root lengths, and external-external link lengths enabled Hycrest seedlings to grow better than Whitmar seedlings with little water. These root morphological characteristics may prove useful in improving seedling establishment of perennial range grasses.
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.subjectroot branching structure
dc.subjectbranching
dc.subjectPseudoroegneria spicata
dc.subjectsoil water potential
dc.subjectseedling growth
dc.subjectroots
dc.subjectwater requirements
dc.subjectplant morphology
dc.subjectAgropyron desertorum
dc.subjectwater availability
dc.subjectAgropyron cristatum
dc.subjectroot systems
dc.subjectBromus tectorum
dc.subjectPoaceae
dc.subjectestablishment
dc.titleEffect of water on morphological development in seedlings of three range grasses: Root branching patterns
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.beginpage355-360
refterms.dateFOA2020-09-24T02:06:43Z


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