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Where are the diploid (2n=2x=20) genome donors ofGlycine Willd. (Leguminosae, Papilionoideae)?

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Summary

There are about 16 genera in the subtribe Glycininae, tribe Phaseoleae, family Leguminosae. The overwhelming reason for the economic importance of the subtribe Glycininae is due to the cultivated soybean,Glycine max (L.) Merrill. The soybean, its wild annual counterpart and most of wild perennial members of the genusGlycine carry 2n=40 chromosomes. It is reasonable to assume that the base number of the genus is x=10. HoweverGlycine plants carrying 2n=20 have not been reported. Herein we report on the 2n chromosome situation of the remaining 15 genera in the subtribe Glycininae and two genera (Galactia, Ophrestia) once thought to be allied withGlycine. Certain species inDumasia, Galactia andOphrestia were found to carry 2n=20 chromosomes. All the other genera carry 2n=22, 28 or 44 chromosomes. The 2n chromosome number ofTeyleria (44) andPseudeminia (22) is being reported for the first time. No cytological information is available forDiphyllarium, Masteria andSinodolichos.

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Authors and Affiliations

  1. Department of Agronomy, University of Illinois, 1102 South Goodwin Avenue, 61801, Urbana, Il, U.S.A.

    P. S. Kumar & T. Hymowitz

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  1. P. S. Kumar
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  2. T. Hymowitz
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Kumar, P.S., Hymowitz, T. Where are the diploid (2n=2x=20) genome donors ofGlycine Willd. (Leguminosae, Papilionoideae)?. Euphytica 40, 221–226 (1989). https://doi.org/10.1007/BF00024515

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  • DOI: https://doi.org/10.1007/BF00024515

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