International Database for Barley Genes and Barley Genetic Stocks

BGS 105, Xantha seedling 3, xnt3

BGN  26:139
Stock number: BGS 105
Locus name: Xantha seedling 3
Locus symbol: xnt3

Previous nomenclature and gene symbolization:

Xantha seedling c = xc (1).
Viridis seedling-l = vir-l (3).


Monofactorial recessive (1).
Located in chromosome 3HS (5, 6); xnt3.c is about 9.4 cM proximal from the abo9 (albino seedling 9) locus (2); xnt3.c is about 14.4 cM distal from the uzu1 (uzu 1) locus (5, 6); xnt3.c is about 3.7 cM proximal from the alm1 (albino lemma 1) locus (5).


Seedlings have a yellow (picric yellow) to yellow-green color depending upon temperatures, but they can be grown to maturity under certain environmental conditions (1). The xnt3.c gene must be maintained as a heterozygous stock.

Origin of mutant:

A spontaneous mutant in Colsess (CIho 2792) (1).

Mutational events:

xnt3.c (Colsess IV, GSHO 66) in Colsess (CIho 2792) (1); vir-l.27 (NGB 14701) in Maja (NGB 8815, PI 184884) (4, 7).

Mutant used for description and seed stocks:

xnt3.c (GSHO 66) in Colsess.


1. Robertson, D.W. 1929. Linkage studies in barley. Genetics 14:1-36.
2. Robertson, D.W. 1937. Inheritance in barley. II. Genetics 22:443-451.
3. Simpson, D.J., and D. von Wettstein. 1980. Macromolecular physiology of plastids. XIV. Viridis mutants in barley: genetics, fluoroscopic and ultrastructural characterisation. Carlsberg Res. Commun. 45:283-314.
4. Simpson, D.J., and D. von Wettstein. 1992. Coordinator's report: Nuclear genes affecting the chloroplast. Stock list of mutants kept at the Carlsberg Laboratory. Barley Genet. Newsl. 21:102-108.
5. Takahashi, R., and J. Hayashi. 1959. Linkage study of albino lemma character in barley. Ber. Ohara Inst. landw. Biol., Okayama Univ. 11:132-140.
6. Takahashi, R., and J. Yamamoto. 1951. Studies on the classification and geographical distribution of the Japanese barley varieties. III. On the linkage relation and the origin of the "uzu" or semi-brachytic character in barley. Ber. Ohara Inst. landw. Forsch. 9:399-410.
7. Wettstein, D. von, and K. Kristiansen. 1982. Chloroplast genes: Progress report II on diallelic tests between mapped chloroplast genes and chloroplast genes in stock collection at Copenhagen. Barley Genet. Newsl. 12:93-94.


T. Tsuchiya and T.E. Haus. 1971. Barley Genet. Newsl. 1:127.


J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:139.