IV. 4 Summary of Linkage Data for Chromosome 4 (1972-1977)
T. E. Haus. Department of Agronomy, Colorado State University, Fort Collins, Colorado 80523 U.S.A.
Since the last summary of linkage and chromosome mapping in barley (21) a number of mutant genes have been located on chromosome 4. Most of the associations have been made using conventional linkage analysis but some mutants have been associated with chromosome 4 by trisomic analysis methods. Genes located on chromosome 4 and method of association are presented in Table 1.
Table 1. Genes located on chromosome 4 since 1971 and method of association with that chromosome.
Certain allelic relations have been observed with mutants of similar phenotype. The mutants that have been shown to be allelic are listed in Table 2.
Table 2. Chromosome 4 mutants showing allelic relations
A number of studies have reported linkage relations of mutants on chromosome 4. These linkages and associations are presented in Table 3.
Table 3. Linkage and associations not reported in Barley Genetics II (1971)
The increased use of trisomic plants to locate or confirm the presence of a mutant gene on a particular chromosome has added to the precision of linkage analysis. In addition, telotrisomic plants are being used to precisely locate the centromere and to localize genes on specific chromosome arms. So far, only one telotrisomic type stock has been found for chromosome 4. Use of this stock has resulted in association of certain mutants on that arm of chromosome 4 as summarized in Table 4.
Table 4. Inheritance behavior of genes on Chromosome 4 with triplo-4 and telotrisomic 4.
References:
1. Bockelman, H.E., E.L. Sharp and R.F. Eslick. 1977. Trisomic analysis of several scald and net blotch resistance genes. BGN 7:11-15.
2. Eslick, R.F., R.T. Ramage and D.R. Clark. 1974. Two genetic male steriles, msg6 and msg,,bk assigned to chromosome 6. BGN 3:11.
3. Finch, R.A. and G.E. Porter. 1976. A single gene determining two new aleurone colors in barley. BGN 6:26-27.
4. Fischbeck, G., and H. Hauser. 1976. Research notesw BGN 6:Z8-29.
5. Fukuyama, T., V. Hayashi and R. Takahashi. 1975. Genetic and linkage studies of the five types of induced six-row mutants. BGN 5:12-13.
6. Gymer, P.T. 1977. The deficiens allele. BGN 7:34.
7. Gymer, P.T. 1977. Probable allelism of Ii and Int - c genes. BGN 7:34-35.
8. Haus, T.E. and T. Tsuchiya. 1972. Allelic relationships among glossy seedling mutants. BGN 2:79-80.
9. Haus, T.E. 1974. Allelism test of chromosome 4 mutants. BGN 4:31-33.
10. Hockett, E.A. 1975. The genetic male sterile barley collection. BGN 5:84-86.
11. Jorgensen, J.H. 1972. Chromosome location of locus ml-o conditioning resistance to powdery mildew. BGN 2:31-32.
12. Jorgensen, J.H. 1974. Location of the ml-o locus on barley chromosome 4. BGN 4:43-44.
13. Jorgensen, J.H. and H.P. Jensen. 1976. New linkage data with the ml-o locus on barley chromosome 4. BGN 6:39-40.
14. Kleinhofs, A. and B.J. Millham. 1973. Allelism testing of some chlorina mutants. BGN 3:28.
15. Kleinhofs, A. and R.L. Warner. 1974. Temperature sensitive mutants in Hordeum vulgare L. Crop Sci. 14:268-271.
16. Kleinhofs, A. and B.J. Millham. 1976. Allelism tests with some chlorina mutants. BGN 6:40-41.
17. Konishi, T. 1973. Genetic analysis of EMS-induced mutants in barley. BGN 3:28-31.
18. Kushnak, G.D. 1972. Linkage of B1 and ms-v on chromosome 4. BGN 2:45-46.
19. McProud, W.L. and R.F. Eslick. 1971. Allelism within a series of glossy sheath mutants BGN 1:31-34.
20. Moseman, J.G. 1976. Resistance to Erysiphe graminis (DC) Merat hordei Em. Marchal (Powdery Mildew) BGN 6:124.
21. Robertson, D.W. 1971. Recent information of linkage and chromosome mapping. Barley Genetics II:220-242.
22. Singh, R.J. and T. Tsuchiya. 1974. Further information on telotrisomic analysis in barley. BGN 4:66-69.
23. Søgaard, B. 1971. Linkage studies of eceriferum mutants in barley. BGN 1:41-47.
24. Søgaard, A.B. 1973. Continued linkage studies on eceriferum mutants in barley. BGN 3:57-51.
25. Takahashi, R., J. Hayashi and I. Moriya. 1971. Linkage studies in barley. BGN 1:51-58.
26. Takahashi, R., J. Hayashi and I. Moriya. 1973. Two new mutant genes or chromosome 4. BGN 3:65-66.
27. Takahashi, R., J. Hayashi, T. Konishi and I. Moriya. 1975. Linkage analysis of barley mutants. BGN 5:56-60.
28. Takahashi, R., J. Hayashi and I. Moriya. 1976. Inheritance and linkage studies of chlorotic hybrids due to complimentary dominant genes. BGN 6:71-73.
29. Tsuchiya, T. 1971. Telotrisomic analysis of 14 marker genes on chromosome 1, 2 and 4. BGN 1:61-62.
30. Tsuchtya, T. 1973. Allelic relationships between two glossy seedling genes gl 3 and gl 4 in barley. BGN 3:66-67.
31. Tsuchiya, T. and R.J. Singh. 1973. Further information on telotrisomic analysis in barley. BGN 3:75-78.
32. Tsuchiya, T. 1974. Allelic relationships of genes for short-awned mutants in barley. BGN 4:80-81.
33. Tsuchiya, T. and R.L. Haines. 1975. Trisomic analysis of nine mutant genes in barley. BGN 5:67-69.
34. Tsuchiya, T., T. Fachan and T.E. Haus. 1976. Primary trisomic analysis of lg 3 (light green) and f 3 (chlorina) in barley. BGN 6:82-84.
35. Tsuchiya, T. and J.V. Alanko. 1976. Genetic studies of two mutations by means of primary trisomic analysis. BGN 6:84-85.
36. Tsuchiya, T., S.D. Tanksley, and R. Ward. 1976. Trisomic analysis of three mutant genes in barley. BGN 6:95.
