Summary
New linkage data are presented for the situation of five previously unlocated isozymic loci of the tomato and closely related species with homosequential chromosomes.Prx-1 lies on chromosome 1, where it is also linked withSkdh-1; Aps-2 is linked withGot-4 on chromosome 8;Tpi-2 has been allocated to chromosome 4; and a linkage has been detected betweenPgi-1 andEst-4, whose respective chromosome has not yet been determined. These and previously published data have been summarized in the form of an isozyme linkage map. Twenty-two loci have thus been mapped on nine of the twelve tomato chromosomes. We discuss some new applications of mapped isozymic genes. In certain types of segregations, isozymic genes are far more efficient than morphological markers in providing linkage information. They greatly expedite the cytogenetic investigation of species hybrids and can be utilized to facilitate backcross transfers of genes from wild to cultivated taxa.
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Literature
Allard, R.W. (1956): Formulas and tables to facilitate the calculation of recombination values in heredity. Hilgardia24, 235–278
Anonymous (1977): Linkage summary. Rep. Tomato Genet. Coop.27, 3–5
Fobes, J.F.; Rick, C.M. (1976):Aps, Est andGot phenotypes. Rep. Tomato Genet. Coop. No.29, 37–38
Hanson, W.D. (1959): Early generation analysis of lengths of heterozygous chromosome segments around a locus held heterozygous with backcrossing or selfing. Genetics44, 833–837
Khush, G.S.; Rick, C.M. (1963): Meiosis in hybrids betweenLycopersicon esculentum andSolanum pennellii. Genetica33, 167–183
Ott, L.; Scandalios, J.G. (1978): Genetic control and linkage relationships among amino peptidases in maize. Genetics89, 137–146
Philouze, J. (1974): Gênes marquers liés aux gênes de stérilité malems32 etms35 chez la tomate. Ann. Amélior. Plantes24, 77–82
Peirce, L.C.; Brewbaker, J.L. (1973): Applications of isozyme analysis in horticultural science. Hort Science8, 17–22
Rick, C.M. (1969): Controlled introgression of chromosomes ofSolanum pennellii intoLycopersicon esculentum: segregation and recombination. Genetics26, 753–768
Rick, C.M. (1972): Further studies on segregation and recombination in backcross derivatives of a tomato species hybrid. Biol. Zbl.90, 209–220
Rick, C.M. (1979): Biosystematic studies inLycopersicon and closely related species ofSolanum. In: Linnean Society Symposium Series No. 7: The biology and taxonomy of the Solanaceae (eds. Hawkes, J.G., Lester, R.N., and Skelding, A.D.), pp. 667–678
Rick, C.M.; Fobes, J.F. (1974): Association of an allozyme with nematode resistance. Rep. Tomato Genet. Coop. No.24, 25
Rick, C.M.; Fobes, J.F. (1976):Prx phenotypes. Rep. Tomato Genet. Coop. No.26, 15–16
Rick, C.M.; Fobes, J.F. (1977): Linkage relations of some isozymic loci. Rep. Tomato Genet. Coop. No.27, 22–24
Rick, C.M.; Fobes, J.F.; Holle, M. (1977): Genetic variation inLycopersicon pimpinellifolium: evidence of evolutionary change in mating systems. Plant Syst. Evol.127, 139–170
Rick, C.M.; Smith, P.G. (1953): Novel variation in tomato species hybrids. Am. Nat.87, 359–373
Rick, C.M.; Tanksley, S.D.; Fobes, J.F. (1979): A pseudoduplication inLycopersicon pimpinellifolium. Proc. Natl. Acad. Sci. (Wash.)76, 3435–3439
Shaw, C.R.; Prasad, R. (1970): Starch gel electrophoresis of enzymes — a compilation of recipes. Biochem. Genet.4, 297–320
Tanksley, S.D. (1979a): An efficient and economical design for starch gel electrophoresis. Rep. Tomato Genet. Coop. No.29, 37–38
Tanksley, S.D. (1979b): Linkage, chromosomal association and expression ofAdh-1 andPgm-2 in tomato. Biochem. Genet.17, 1159–1167
Tanksley, S.D. (1979c):Adh andPgm phenotypes. Rep. Tomato Genet. Coop. No.29, 36–37
Tanksley, S.D. (1979d): Genetics and developmental relationships of three glycolytic enzymes in tomato. Genetics91, s127
Tanksley, S.D. (1980):Pgi-1, a single gene in tomato responsible for a variable number of isozymes. Canad. Jour. Genet. Cytol.22, 271–278
Tanksley, S.D.; Rick, C.M. (1980): Genetics of esterases in species ofLycopersicon. Theor. Appl. Genet.56, 209–219
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Communicated by R.W. Allard
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Tanksley, S.D., Rick, C.M. Isozymic gene linkage map of the tomato: Applications in genetics and breeding. Theoret. Appl. Genetics 58, 161–170 (1980). https://doi.org/10.1007/BF00279708
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DOI: https://doi.org/10.1007/BF00279708