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      Genetic analyses of two independent chlorophyll-deficient mutants identified among the progeny of a single chimeric foliage soybean plant.

      1 , ,
      The Journal of heredity
      Oxford University Press (OUP)

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          Abstract

          Chimeric (variegated) foliage plants are frequently observed in many species. In soybean [Glycine max(L.) Merr.], progeny of chimeric plants are a source of nuclear and cytoplasmically inherited mutants. Self-pollinated progeny of a single chimeric plant derived from tissue culture of PI 427099 (Jilin 3) included plants with green foliage, chimeric foliage, yellow foliage (viable), and yellow foliage (lethal). Our objectives were to determine (1) inheritance, linkage, and allelism of the lethal-yellow mutant with known chlorophyll-deficient mutants; (2) inheritance, linkage, and allelism of the viable-yellow mutant with known chlorophyll-deficient mutants; (3) allelism of the lethal-yellow mutant with the viable-yellow mutant; and (4) male and female gamete transmission of the viable-yellow mutant trait. The viable-yellow mutant was allelic to T323, y20 y20 (Ames 2) Mdh1-n Mdh1-n (Ames 2) and was assigned genetic type collection number T361 and gene symbol y20 y20 (Ames 24) Mdh1-n Mdh1-n (Ames 22). The lethal-yellow mutant was allelic to T225H (Y18 y18) and was assigned genetic type collection number T362H and gene symbol Y18 y18 (Ames 2). T225H became Y18 y18 (Ames 1). The two chlorophyll-deficient mutants were not linked to each other. There was no significant difference in F(1) male or female gamete transmission of the viable-yellow mutant. However, many cross-combinations gave significant deviations from the expected 3 green plants:1 viable-yellow plant in the F(2) generation. The allelism of these two chlorophyll-deficient mutants with mutants T225H and T323, derived from putative transposable element systems, is intriguing. An explanation of this phenomenon awaits molecular experimentation.

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          Author and article information

          Journal
          J Hered
          The Journal of heredity
          Oxford University Press (OUP)
          0022-1503
          0022-1503
          July 27 2000
          : 91
          : 4
          Affiliations
          [1 ] Department of Agronomy and Zoology/Genetics, Iowa State University, Ames 50011-1010, USA. rpalmer@iastate.edu
          Article
          10.1093/jhered/91.4.297
          10912676
          1f56d91f-73b8-4238-94db-3c8a9af72ea4
          History

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