International Database for Barley Genes and Barley Genetic Stocks

BGS 78, Mottled leaf 4, mtt4

BGN  41:86
Stock number: BGS 78
Locus name: Mottled leaf 4
Locus symbol: mtt4

Previous nomenclature and gene symbolization:

Mottled leaf-e = mt,,e (3).
Mottled leaf = mt (6).


Monofactorial recessive (3, 4, 5).
Located in chromosome 2HL (3, 5); mtt4.e is about 13.7 cM distal from the vrs1 (six-rowed spike 1) locus (3, 5); mtt4.e is associated with SNP markers 2_1340 to 2_0182 (positions 166.06 to 185.53 cM) in 2H bins 11 to 12 of the Bowman backcross-derived line BW602 (1), likely in 2H bin 11.


When the plants are grown under cool conditions, white-yellowish blotches develop as horizontal bands in seedling leaves, 2 to 4 per leaf blade (3). The bands faded as the plant grows or under warmer environmental conditions. At later stages of development, plants had a slightly yellow-green color (2). Plants of the Bowman backcross-derived line for mtt4.e, BW602, headed a few days later than Bowman, had 2 to 3 more kernels per spike, were slightly shorter, had slightly lighter kernel weights. The grain yields of BW602 were similar to those of Bowman (2).

Origin of mutant:

A spontaneous mutant in Victorie (OUU010, CIho 5077) (3).

Mutational events:

mtt4.e (OUL076, GSHO 1231) in Victorie (OUU010, CIho 5077) (3).

Mutant used for description and seed stocks:

mtt4.e (OUL076, GSHO 1231) in Victorie ); mtt4.e in Bowman (PI 483237)*6 (GSHO 1914); mtt4.e in Bowman*7 (BW602, NGB 22168).


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. 2011. Genetic dissection of barley morphology and development. Plant Physiol. 155:617-627.

2. Franckowiak, J.D. (Unpublished).

3. Hayashi, J., T. Konishi, I. Moriya, and R. Takahashi. 1984. Inheritance and linkage studies in barley. VI. Ten mutant genes located on chromosomes 1 to 7, except 3. Ber. Ohara Inst. landw. Biol., Okayama Univ. 18:227-250.

4. Takahashi, R., J. Hayashi, and I. Moriya. 1972. New linkage data obtained in 1971. Barley Genet. Newsl. 2:74-76.

5. Takahashi, R., J. Hayashi, and I. Moriya. 1974. New linkage data obtained during 1972-73 season. Barley Genet. Newsl. 4:74-76.

6. Tsuchiya, T. 1974. Linkage maps of barley as of March 1974. Barley Genet. Newsl. 4:126-130.


J.D. Franckowiak and T. Konishi. 1997. Barley Genet. Newsl. 26:116.


J.D. Franckowiak. 2011. Barley Genet. Newsl. 41:86.