II. 23. Additional information on the primary trisomic analysis of sf (female sterile or gigas) in barley. (1)
J.W. Shim (2) A. Shahla and T. Tsuchiya, Department of Agronomy, Colorado State University, Fort Collins, Colorado 80523, U.S.A.
(1) Supported by USDA/SEA Competitive Research Grant 82-CRCR-1-1020 and CSU Hatch project.
(2) Visiting Professor, Leave of Absence from Seoul National University,
Suweon, Korea, 1982-1983.
Previous experiments of sf for female sterility (Harvey et al. 1968) showed that sf is allelic to gigas mutant (KM72) in the variety Tochigi Golden Melon (Tsuchiya, 1975). The gigas gene (sf) showed disomic ratios with Triplo 3 (Tsuchiya and Haines, 1975) and Triplo 5 (Shim et al. 1983). Additional information is presented in this report (Table 1).
Table 1. F2 segregation of primary trisomics x gigas or female sterile (sf) mutant.
As obvious from Table 1, the gene sf is definitely not associated with chromosome 3, 4, 5 or 6. The result from Triplo 7 is not conclusive because of low number of trisomics analyzed due to high mortality of the trisomic plants in this population. The results from Triplo 2 are also not conclusive because of small numbers in F2 population. The possible association of the gene sf with chromosome 1, 2 or 7 is now under investigation.
References:
Harvey, B.L., E. Reinbergs and B.H. Somaroo. 1968. Can. J. P1. Sci. 48:417-418.
Shim, J.W., E. Furst and T. Tsuchiya. 1983. BGN 13:49.
Tsuchiya, T. 1975. BGN 5:64-67.
Tsuchiya, T, and R.L. Haines. 1975. BGN 5:67-69.
