BGN 8: Observed recombination between T3 translocation stocks and scald resistance loci BARLEY GENETICS NEWSLETTER, VOL. 8, II. RESEARCH NOTES
Bockelman et al., pp. 17-20

II. 3 Observed recombination between T3 translocation stocks and scald resistance loci.

H. E. Bockelman, E. L. Sharp, and R. F. Eslick, Depts. of Plant Pathology and Plant and Soil Science, Montana State Univ., Bozeman, MT 59717, USA.

Cultivars carrying scald resistance alleles at loci on chromosome 3 were crossed to several T3 translocations and the two chromosome double translocation, T3-7c+7d (Fastnaught-McCriff and Ramage, 1977). F2 plants were classified fertile and semi-sterile and harvested. F3 seed was planted in the greenhouse in flats, inoculated with a Lebanon isolate of Rhynchosporium secalis, and subsequently classified for reaction to scald. Three reactions were observed in these F3 lines: homozygous resistant, homozygous susceptible, and segregating. The results are shown in Table 1. Our goal is to identify translocation breakpoints which do not crossover with scald resistance genes.

Table 1. Scald reactions of F3 lines of crosses between scald resistant cultivars and T3 translocation stocks.

Table 1 continued

References:

Baker, R. J. and E. N. Larter, 1963. The inheritance of scald resistance in barley. Can. J. Gen. Cyt. 5:445-9.

Dyck, P. L. and C. W. Schaller, 1961. Association of two genes for scald resistance with a specific barley chromosome. Can. J. Gen. Cyt. 3:165-9.

Fastnaught-McGriff, C. E. and R. T. Ramage, 1977. Combining chromosomes: the construction of "2-chromosome, double interchanges". BGN 7:73-5.

Wells, S. A. and W. P. Skoropad, 1963. Inheritance of reaction to Rhynchosporium secalis in barley. Can. J. Pl. Sci. 43:184-7.

BGN 8 toc
BGN Main Index