International Database for Barley Genes and Barley Genetic Stocks

BGS 513, Xantha seedling 2, xnt2

BGN  26:440
Stock number: BGS 513
Locus name: Xantha seedling 2
Locus symbol: xnt2

Previous nomenclature and gene symbolization:

Xantha seedling b = xb (1).
Yellow seedling b = xb (2).


Monofactorial recessive (1).
Location is unknown.


Seedlings are yellow in color and do not develop green pigmentation. Since they do not survive beyond the two leaf stage, the xnt2.b gene must be maintained as a heterozygous stock (1).

Origin of mutant:

A spontaneous mutant in Black Hulless (PI 24849) (1).

Mutational events:

xnt2.b (xb) (Black Hulless II, GSHO 2) in Black Hulless (PI 24849) (1).

Mutant used for description and seed stocks:

xnt2.b in Black Hulless (GSHO 2).


1. Robertson, D.W. 1932. The effect of a lethal in the heterozygous condition on barley development. Colorado Agric. Exp. Stn. Tech. Bull. 1. 12 p.

2. Haus, T.E. 1988. BGS 513, Yellow seedling, xb. Barley Genet. Newsl. 18:82.


T.E. Haus 1988. Barley Genet. Newsl. 18:82.


J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:440.