The Use of Physiological Traits for Corn Improvement
2013; Linguagem: Inglês
10.2134/agronmonogr18.3ed.c7
ISSN2156-3276
Autores Tópico(s)Agriculture, Soil, Plant Science
ResumoChapter 7 The Use of Physiological Traits for Corn Improvement R. H. Hageman, R. H. Hageman Department of Agronomy, University of Illinois, Urbana, IllinoisSearch for more papers by this authorR. J. Lambert, R. J. Lambert Department of Agronomy, University of Illinois, Urbana, IllinoisSearch for more papers by this author R. H. Hageman, R. H. Hageman Department of Agronomy, University of Illinois, Urbana, IllinoisSearch for more papers by this authorR. J. Lambert, R. J. Lambert Department of Agronomy, University of Illinois, Urbana, IllinoisSearch for more papers by this author Book Editor(s):G. F. Sprague, G. F. SpragueSearch for more papers by this authorJ. W. Dudley, J. W. DudleySearch for more papers by this author First published: 01 January 1988 https://doi.org/10.2134/agronmonogr18.3ed.c7Citations: 2Book Series:Agronomy Monographs AboutPDFPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShareShare a linkShare onEmailFacebookTwitterLinkedInRedditWechat Summary Most of the improvement in the corn hybrids used has been achieved by the use of conventional plant breeding methods. While changes in physiological traits such as photosynthesis, partitioning of assimilates, etc. can be associated with increased yields of the used cultivars, these changes have been achieved indirectly by conventional breeding methods rather than by direct selection for the trait. This chapter describes the requirements of a physiological selection trait and discusses problems with physiological traits. For corn, genetic variability and heritability have been reported for numerous traits such as: metabolite composition; mineral constituents; morphology; enzyme activity; and photosynthetic rates. The more extensive and successful use of physiological traits in corn-breeding programs will occur when selection for physiological traits can be integrated with selection for grain yield, pest resistance, and other important agronomic traits. References Alexander, D.E. 1988. Maize. In G. Robbeion (ed.) Oil crops of the world. Macmillan Publ. Co., New York. (In press.). Google Scholar Alexander, D.E., and R.G. Creech. 1977. Breeding special industrial and nutritional types. Corn and corn improvement. G.F. Sprague (ed.) Agronomy. 18: 363–390. Google Scholar Alexander, D.E., L. Silvela, F.I. Collins, and R.C. Rodgers. 1967. Analysis of oil content of maize by wide-line NMR. J. Am. Oil. Chem. Soc. 44: 555–558. 10.1007/BF02901248 CASPubMedWeb of Science®Google Scholar Baker, D.E., R.R. 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