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Water-Soluble Carbohydrates in Johnsongrass

Published online by Cambridge University Press:  12 June 2017

C. G. McWhorter
C. G. McWhorter*
Affiliation:
S. Weed Sci. Res. Lab., Agr. Res. Serv., U.S. Dep. Agr., Stoneville, MS 38776
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Abstract

Studies were conducted to characterize qualitatively and quantitatively the water-soluble carbohydrates in johnsongrass [Sorghum halepense (L.) Pers.]. Glucose, fructose, and sucrose were the only sugars detected in other than trace amounts in leaves, culms, or rhizomes. Sucrose was the major storage carbohydrate, although glucose and fructose were present throughout most of the life cycle in both leaves and rhizomes. Levels of glucose, fructose, and sucrose in rhizomes were maximum when plants began flowering and minimum at 10 to 30 days after plant emergence. Glucose, fructose, and sucrose were at a maximum in leaves within 30 days after plant emergence. Glucose was present only in trace amounts in leaves for about 10 days during initial flowering; fructose was at a maximum at that time. Sucrose in leaves occurred in greatest quantities soon after plant emergence, immediately before flowering, and after flowering. Leaf blades and sheaths contained nearly equal concentrations of carbohydrates, but stems contained greater concentrations than leaves. Basal shoots and secondary culms from nodes on primary culms contained greater concentrations of carbohydrates than leaves on primary culms. Regrowth from clipped shoots had significantly higher concentrations of glucose and sucrose than did unclipped shoots. Rhizomes of clipped plants had significantly less sucrose but more glucose than rhizomes of unclipped plants.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 2 , March 1974 , pp. 159 - 163
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

Literature Cited

1. Alberda, T. 1966. Responses of grasses to temperature and light. Pages 200–212 in Milthorpe, F.L. and Ivins, J.D., eds. The growth of cereals and grasses. Butterworths. London.Google Scholar
2. Barfam, H.N. and Wagoner, J.A. 1946. Effect of time and conditions of cure on the carbohydrate composition of sweet potatoes and on the properties of their starch. J. Agr. Res. 73:255–280.Google Scholar
3. Barr, C.G. 1940. Organic reserves in the roots of bindweed. J. Agr. Res. 60:391–413.Google Scholar
4. Barr, C.G. 1942. Reserve foods in the roots of whiteweed (Cardavia draba var. repens). J. Agr. Res. 64:725–740.Google Scholar
5. Brown, E.M. 1939. Some effects of temperature on the growth and chemical composition of certain pasture grasses. Mo. Agr. Exp. Sta. Res. Bull. 299. 76 pp.Google Scholar
6. Clark, J.M. Jr. 1964. Experimental biochemistry. W.H. Freeman and Co., San Francisco. 228 pp.Google Scholar
7. Consden, R. 1961. Paper chromatography. Pages 127–160 in Long, C., ed. Biochemist's handbook. D. Van Nostrand Co., Inc. London.Google Scholar
8. Horowitz, M. 1972. Seasonal development of established johnsongrass. Weed Sci. 20:392–395.Google Scholar
9. Hull, R.J. 1970. Germination control of johnsongrass rhizome buds. Weed Sci. 18:118–121.Google Scholar
10. Kneen, E. and Blish, M.J. 1941. Carbohydrate metabolism and winter hardiness of wheat. J. Agr. Res. 62:1–26.Google Scholar
11. McWhorter, C.G. 1961. Morphology and development of johnsongrass plants from seeds and rhizomes. Weeds 9:558–562.Google Scholar
12. McWhorter, C.G. 1961. Carbohydrate metabolism of johnsongrass as influenced by seasonal growth and herbicide treatments. Weeds 9:563–568.CrossRefGoogle Scholar
13. McWhorter, C.G. 1971. Growth and development of johnsongrass ecotypes. Weed Sci. 19:141–146.Google Scholar
14. McWhorter, C.G. 1971. Anatomy of johnsongrass. Weed Sci. 19:385–393.Google Scholar
15. Rapp, K.E. 1947. Carbohydrate metabolism of johnsongrass. Agron. J. 39:869–873.Google Scholar
16. Robinson, T. 1963. The organic constituents of higher plants. Burgess Publishing Co., Minneapolis, Minn. 319 pp.Google Scholar
17. Smith, D., Paulsen, G.M., and Raguse, C.A. 1964. Extraction of total available carbohydrates from grass and legume tissue. Plant Physiol. 39:960–962.CrossRefGoogle ScholarPubMed
18. Snell, F.D., Snell, C.T., and Snell, C.A. 1961. Colorimetric methods of analysis. Vol. 3A. D. Van Nostrand Co., Inc. New York. 576 pp.Google Scholar
19. Sprague, V.G. and Sullivan, J.T. 1950. Reserve carbohydrates in orchardgrass clipped periodically. Plant Physiol. 25:92–102.CrossRefGoogle Scholar
20. Sturkie, D.G. 1930. The influence of various top cutting treatments on root stocks of Johnson grass. Agron. J. 23:82–93.CrossRefGoogle Scholar
21. Sullivan, J.T. and Sprague, V.G. 1949. The effect of temperature on the growth and composition of the stubble and roots of perennial ryegrass. Plant Physiol. 24:706–719.Google Scholar
22. Ventre, E.K. and Byall, S. 1948. Sucrose, dextrose, and levulose content of some domestic varieties of sorgo at different stages of maturity. J. Agr. Res. 76:145–151.Google Scholar
23. Weinmann, H. 1948. Underground development and reserves of grasses–a review. J. Brit. Grassland Soc. 3:115–140.CrossRefGoogle Scholar