Title: Morphology and Cytology of Synthetic Hybrids of Agropyron trichophorum x Agropyron cristatum
Abstract: American Journal of BotanyVolume 50, Issue 10 p. 1028-1034 Article MORPHOLOGY AND CYTOLOGY OF SYNTHETIC HYBRIDS OF AGROPYRON TRICHOPHORUM X AGROPYRON CRISTATUM† Douglas R. Dewey, Douglas R. Dewey Crops Research Laboratory, Agricultural Experiment Station, Logan, UtahResearch Geneticist, Crops Research Division, ARS, USDA.Search for more papers by this author Douglas R. Dewey, Douglas R. Dewey Crops Research Laboratory, Agricultural Experiment Station, Logan, UtahResearch Geneticist, Crops Research Division, ARS, USDA.Search for more papers by this author First published: 01 November 1963 https://doi.org/10.1002/j.1537-2197.1963.tb06586.xCitations: 1 †Cooperative investigations of the Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, and the Utah Agricultural Experiment Station, Logan, Utah. Approved as Journal paper No. 326. Utah Agricultural Experiment Station. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Dewey, Douglas R. (Utah State U., Logan.) Morphology and (cytology of synthetic hybrids of Agropyron trichophorum X Agropyron cristatum. Amer. Jour. Bot. 50(10): 1028–1034. Illus 1963.—Three hybrids were obtained from controlled crosses of pubescent wheatgrass, A. trichophorum (2n = 42), and hexaploid crested wheatgrass, A. cristatum (211 = 42). The hybrids were intermediate between the parent plants for all vegetative and spike characteristics observed. Under open pollination, 2 of the hybrids set 2 seeds each, and the other hybrid produced 60 seeds. Meiosis in the parent plants was basically regular. Average motaphase-I chromosome associations were 0.09 I, 20.56 II, 0.05 III, and 0.16 IV per cell in the A. trichophorum parent, which was described as a segmental autoallohexaploid. The hexaploid A. cristatum parent averaged 0.18 I, 7.44 II, 0.81 III, 2.86 IV, 0.08 V, and 2.11 VI per cell at diakinesis and was described as an autohexaploid. Chromosome pairing in the hexaploid hybrid averaged 5.08 I, 8.94 II, 4.33 III, 1.11 IV, 0.27 V, and 0.05 VI per cell. On the basis of chromosome pairing in the parent species and their hybrids, it was concluded that 1 of the A. trichophorum genomes was partially homologous with the 3 genomes of hexaploid A. cristatum. Genome formulae for hexaploid A. cristatum, A. trichophorum, and their hybrids were represented as AAAAAA, A1A1B1B1B2B2, and AAAA1B1B2 respectively. Citing Literature Volume50, Issue10November-December 1963Pages 1028-1034 RelatedInformation
Publication Year: 1963
Publication Date: 1963-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 2
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