BGS 338, High lysine 1, lys1

High lysine = lys (9).

Monofactorial recessive (9).
Located in chromosome 5HL (5, 6); lys1.j is about 10.8 cM distal from the srh1 (short rachilla hair 1) locus (2, 5, 6).

After the hard dough stage, kernels develop a depression in the center of the lemma which becomes progressively more distinct with maturity. The mature endosperm of the mutant appears to be harder than normal. The mutant expresses xenia permitting classification of kernels from heterozygous plants as normal or shrunken with an expected 3:1 ratio (9). Mutant plants have a higher lysine content in the endosperm than normal sibs (3, 7, 9). Field establishment and growth of mutant plants is normal, but grain yield is low (1, 10). Grain size and hordein protein content are reduced by the lys1.j gene (1, 3).

Natural occurrence in Hiproly (CIho 3947) (7, 8).

lys1.j in Hiproly (CIho 3947, GSHO 1784) (4, 5, 7).

lys1.j in Hiproly (GSHO 1784); lys1.j in Bowman (PI 483237)*2 (GSHO 2115); lys1.j in Bowman*4 (BW495, NGB 20723).

1. Balasaraswathi, R., B. Køie, and H. Doll. 1984. The concentration and yield of hordein and some lysine-rich proteins as influenced by the lys gene of Hiproly barley. Hereditas 100:225-231.
2. Jensen, J. 1981. Construction of a barley chromosome 7 linkage map. p. 927-939. In M.J.C. Asher, R.P. Ellis, A.M. Hayter, and R.N.H. Whitehouse (eds.) Barley Genetics IV. Proc. Fourth Int. Barley Genet. Symp., Edinburgh. Edinburgh Univ. Press, Edinburgh.
3. Ingerversen, J., and B. Køie. 1971. Protein patterns of some high lysine barley lines. Hereditas 69:319-323.
4. Jensen, J., and H. Doll. 1979. Gene symbols for barley high-lysine mutants. Barley Genet. Newsl. 9:33-37.
5. Karlsson, K.-E. 1972. Linkage studies on a gene for high lysine content in Hiproly barley. Barley Genet. Newsl. 2:34-36.
6. Karlsson, K.-E. 1976. Linkage studies on the lys-gene in relation to some marker genes and translocations. p. 536-541. In H. Gaul (ed.) Barley Genetics III. Proc. Third Int. Barley Genet. Symp., Garching, 1975. Verlag Karl Thiemig, München.
7. Munck, L. 1972. High lysine barley - a summary of present research development in Sweden. Barley Genet. Newsl. 2:54-59.
8. Munck, L., K-E. Karlsson, and A. Hagberg. 1971. Selection and characterization of a high-protein, high-lysine variety from the World Barley Collection. p. 544-558. In R.A. Nilan (ed.) Barley Genetics II. Proc. Second Int. Barley Genet. Symp., Pullman, WA, 1969. Washington State Univ. Press, Pullman.
9. Munck, L., K.-E. Karlsson, A. Hagberg, and B.O. Eggum. 1970. Gene for improved nutritional value in barley seed protein. Science 168:985-987.
10. Oram, R.N., and H. Doll. 1981 Yield improvement in high lysine barley. Aust. J. Agric. Res. 32:425-434.

J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:286.