International Database for Barley Genes and Barley Genetic Stocks

BGS 170, Light green 3, lgn3

BGN  44:103
Stock number: BGS 170
Locus name: Light green 3
Locus symbol: lgn3

Previous nomenclature and gene symbolization:

Light green 7 = lg7 (5).
Light green 3 = lg3, the lg3 stock studied by Hanson and Kramer (4) may not be the same as the lg3 gene in the GSHO 171 stock (2).


Monofactorial recessive (3, 5).
Located in chromosome 1HL (1); lgn3.c from GSHO 171 in the Bowman backcross-derived line BW480 is associated with SNP markers 1_0552 to 2_0229 (positions 88.33 to 106.61 cM) in 4H bins 08 to 10 (1). Since lgn3 locus was previously mapped in chromosome 4HL (3, 4, 6, 7) [over 10.5 cM distal from the Kap1 (Hooded lemma 1) locus (4)], the donor stock for BW480 may have been incorrect (2).


Seedlings have light or pale green color (5). The pale green color persists until near maturity, and plants are very weak (5) or non-viable in the field (2). Plants can be grown to maturity in greenhouses (6). Plants of the Bowman backcross-derived line for lgn3.c, BW480, showed variable responses to being grown under field conditions. In general, plants headed 4 to 5 days later, they were 10 to 20% shorter than Bowman, and rachis internodes were slightly shorter. Kernel weights of BW480 were 30 to 40% lower (36 vs. 57 mg) and grain yields ranged from none to 1/3 of those for Bowman (2).

Origin of mutant:

A spontaneous mutant in an unknown cultivar (5, 6).

Mutational events:

lgn3.c (No 150, GSHO 171) in an unknown cultivar (5); lgn3.g (lg7) (No 154, GSHO 173) in an unknown cultivar (5).

Mutant used for description and seed stocks:

lgn3.c (GSHO 171) in an unknown cultivar; lgn3.c from an accession obtained from Montana State University and identified as lgn3 in Bowman (PI 483237)*5 (GSHO 2010); lgn3.c in Bowman*7 (BW480, NGB 20708).


1 Druka, A., J. Franckowiak, U. Lundqvist, N. Bonar, J. Alexander, K. Houston, S. Radovic, F. Shahinnia, V. Vendramin, M. Morgante, N. Stein, and R. Waugh. 2010. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.
2. Franckowiak, J.D. (Unpublished).
3. Hanson, W.D. 1952. An interpretation of the observed amount of recombination in interchange heterozygotes in barley. Genetics 37:90-100.
4. Hanson, W.D., and H.H. Kramer. 1949. The genetic analysis of two chromosome interchanges in barley from F2 data. Genetics 34:687-700.
5. Immer, F.R., and M.T. Henderson. 1943. Linkage studies in barley. Genetics 28:419-440.
6. Tsuchiya, T., T. Fachan, and T.E. Haus. 1976. Primary trisomic analysis of lg3 (light green) and f3 (chlorina) in barley. Barley Genet. Newsl. 6:82-84.
7. Tsuchiya, T., and L.B. Hall. 1978. Telotrisomic analysis of four mutant genes in barley. Barley Genet. Newsl. 8:104-107.


T.E. Haus. 1978. Barley Genet. Newsl. 8:154.


J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:195.
J.D. Franckowiak. 2014. Barley Genet. Newsl. 44:103-104.