Title: The Role of the Endosperm in the Germination of Legumes: Galactomannan, Nitrogen, and Phosphorus Changes in the Germination of Guar (Cyamopsis tetragonoloba; Leguminosae)
Abstract: American Journal of BotanyVolume 63, Issue 6 p. 790-797 Article THE ROLE OF THE ENDOSPERM IN THE GERMINATION OF LEGUMES: GALACTOMANNAN, NITROGEN, AND PHOSPHORUS CHANGES IN THE GERMINATION OF GUAR (CYAMOPSIS TETRAGONOLOBA; LEGUMINOSAE) John H. McClendon, John H. McClendon School of Life Sciences, University of Nebraska, Lincoln, 68588Search for more papers by this authorWilliam G. Nolan, William G. Nolan School of Life Sciences, University of Nebraska, Lincoln, 68588Search for more papers by this authorHerman F. Wenzler, Herman F. Wenzler School of Life Sciences, University of Nebraska, Lincoln, 68588Search for more papers by this author John H. McClendon, John H. McClendon School of Life Sciences, University of Nebraska, Lincoln, 68588Search for more papers by this authorWilliam G. Nolan, William G. Nolan School of Life Sciences, University of Nebraska, Lincoln, 68588Search for more papers by this authorHerman F. Wenzler, Herman F. Wenzler School of Life Sciences, University of Nebraska, Lincoln, 68588Search for more papers by this author First published: 01 July 1976 https://doi.org/10.1002/j.1537-2197.1976.tb11868.xCitations: 20AboutPDF 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 The endosperm of Cyamopsis tetragonoloba ("guar") contains 41 % of the dry weight and 45 % of the acetone-insoluble-solids of the seed, but only 3–11 % of the nitrogen and phosphorus. At least 75 % of the acetone-insoluble-solids of the endosperm is galactomannan, only about 12% being accounted for as pentosan, pectin, protein, phytin, ash, and dilute-acid-insoluble residue. During a five-day germination period at 30 C, all of the galactomannan and all but 5 % of the dry weight of the endosperm disappeared, being translocated to the cotyledons. About ⅓ of the nitrogen and phosphorus of the endosperm plus seed coat were also translocated. After a 36-hr lag, the accumulation of the nitrogen and acetone-insoluble-solids in the seedling axis were linear, while the total dry weight and phosphorus showed a rapid increase followed by a slower accumulation during the five-day period. In the cotyledons, the dry weight temporarily increased, but the acetone-insoluble-solids, nitrogen and phosphorus showed only a net decrease after 84, 36 and 36 hr, respectively. Scanning election micrographs of dry-fractured and sectioned endosperm show that the bulk of the endosperm is a solid mass of galactomannan with essentially no cell lumina; a several-cell layer ("aleurone") of thick-walled cells of similar structure is metabolically active. Citing Literature Volume63, Issue6July 1976Pages 790-797 RelatedInformation
Publication Year: 1976
Publication Date: 1976-07-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 17
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