Morphological Diversity and Relationships in the A-Genome Cottons, Gossypium arboreum and G. herbaceum

dc.contributor.author Stanton, Marsha
dc.contributor.author Stewart, J. McD.
dc.contributor.author Wendel, Jonathan
dc.contributor.author Percival, A. Edward
dc.contributor.author Wendel, Jonathan
dc.contributor.department Botany
dc.date 2018-02-17T02:32:39.000
dc.date.accessioned 2020-06-30T00:54:31Z
dc.date.available 2020-06-30T00:54:31Z
dc.date.issued 1994-03-01
dc.description.abstract <p>The Asiatic or A-genome cottons, Gossypium arboreum L. and G. herbaceum L., are potentially important genetic resources for cotton breeding programs. The National Plant Germplasm System (NPGS) contains approximately 400 accessions of these species, but little information is available on the diversity within the collection or on characteristics of individual accessions. This investigation was initiated to provide a morphological description of each accession. These data were used to evaluate the range of diversity represented within the collection and to address the questions of species and race distinctions. Multivariate techniques were used to assess similarities among accessions and to evaluate morphological parameters contributing to the variation in each species. Means for 41 of 53 characters were significantly different between species, although high intraspecific variability resulted in range overlap for all characters. Principal component analysis separated the two species. Accessions from southern Africa and racial designations of africanum and wightianum formed clusters within G. herbaceum based on the first two principal components; no clusters were noted within G. arboreum. Accordingly, the validity of intraspecific or racial classifications for most of the accessions of this latter species in the current NPGS collection is questionable. Additional germplasm acquisitions from under- or non-represented areas could expand genetic diversity in the collection.</p>
dc.description.comments <p>This article is from <em>Crop Science</em> 34 (1994): 519, doi:<a href="http://dx.doi.org/10.2135/cropsci1994.0011183X003400020039x" target="_blank">10.2135/cropsci1994.0011183X003400020039x</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/bot_pubs/7/
dc.identifier.articleid 1019
dc.identifier.contextkey 7696567
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath bot_pubs/7
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/11322
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/bot_pubs/7/1994_Wendel_MorphologicalDiversity.pdf|||Sat Jan 15 01:34:46 UTC 2022
dc.source.uri 10.2135/cropsci1994.0011183X003400020039x
dc.subject.disciplines Botany
dc.subject.disciplines Genetics
dc.subject.disciplines Plant Breeding and Genetics
dc.subject.keywords Gossypium herbaceum
dc.subject.keywords G. arboreum
dc.subject.keywords tetraploid cotton species
dc.subject.keywords National Plant Germplasm System
dc.subject.keywords Germplasm Resources Information Network
dc.subject.keywords principal component analysis
dc.title Morphological Diversity and Relationships in the A-Genome Cottons, Gossypium arboreum and G. herbaceum
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 6d2c458f-b99a-4af5-8869-8b7b2e304592
relation.isOrgUnitOfPublication 9ac828da-ca66-4c1f-9f0d-17de747c541e
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