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Published in Crop Sci 25:319-321 (1985)
© 1985 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Genetic and Linkage Analysis of a Leucine Aminopeptidase in Wild and Cultivated Soybean1

Y. T. Kiang, M. B. Gorman and Y. C. Chiang2

Two electrophoretic variants of leucine aminopeptidase have been observed in mature soybean seeds [Glycine max (L.) Merrill, and G. soja Sieb. and Zucc.]. The two variants are inherited as codominant alleles at one locus. The genetic symbol Lap1-a and Lap1-b are assigned to slow (Rf 0.49) and fast (Rf 0.53) migrating zymograms, respectively. The Lap 1 enzyme is cytosol-associated. The Lap1-b is the most common allele in both G. max (allele frequency 0.985) and G. soja (0.879). The Lap1 and Ap (acid phosphatase) loci are found to be linked with 19.88 ± 0.01 map units between them. The Lapl locus is inherited independently of three other biochemical loci (Am3, Dia2, and Pgm1).

Key Words: Isozyme • Electrophoresis • Glycine max • G. soja

1 Scientific Contribution no. 1275 from the New Hampshire Agri. Exp. Stn. This work is supported in part by USDA 82-CRSR-21045 and UNH CURF no. 856. The authors gratefully acknowledge Prof. N. Kaizuma and Dr. H. I. Oka for generously providing the wild soybean seeds PI 407.431 and PI 486.200 respectively, for this study.

2 Professor and graduate research assistants, Dept, of Plant Science and Genetics Program, Univ. of N.H., Durham, N.H. 03824. M.B. German's current address: assistant professor, biology Dep., Baldwin-Wallace College, Berea, OH 44016.

Received for publication May 29, 1984.


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A. A. Mahama, K. S. Lewers, and R. G. Palmer
Genetic Linkage in Soybean: Classical Genetic Linkage Groups 6 and 8
Crop Sci., September 1, 2002; 42(5): 1459 - 1464.
[Abstract] [Full Text] [PDF]


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