International Database for Barley Genes and Barley Genetic Stocks

BGS 176, Ovaryless 1, ovl1

BGN  35:191
Stock number: BGS 176
Locus name: Ovaryless 1
Locus symbol: ovl1

Previous nomenclature and gene symbolization:

Ovaryless = ovl (2, 3).


Monofactorial recessive with very weak co-dominance (3).
Location in chromosome 4H (1, 5).


The homozygous recessive plant shows nonfunctional female reproductive parts, but anthers are well developed and pollen is viable. Spikes are nearly normal length but are awnless and completely sterile. Due to the lack of a midvein, the second and later leaves droop noticeably. Leaf length is slightly short than normal and leaf blades are somewhat narrower. The heterozygous plant has a midvein present in the basal half of the leaf, but it disappears toward the tip. As a result, some drooping is observed, but it is less apparent than in homozygous plants. Leaf length and width is nearly normal and the plant is fertile (2, 3). A viable source of this mutant has not been identified.
No images

Origin of mutant:

A gamma ray induced mutant in Kanto Bansei Gold (Kanto Bansei Gall) (OUJ818) (2, 3).

Mutational events:

ovl1.a (Kmut 21b, GSHO 610) in Kanto Bansei Gold (OUJ818) (1).

Mutant used for description and seed stocks:

ovl1.a (GSHO 610) in Kanto Bansei Gold. The original stock carried both ovl1.a and a reciprocal translocation (T4-6) (3, 4).


1. Seip, L., and T. Tsuchiya. 1979. Trisomic analysis of a mutant gene ovl for ovaryless or male in barley. Barley Genet. Newsl. 9:89-90.
2. Tsuchiya, T. 1962. Radiation breeding in two-rowed barley. Seiken Ziho 14:21-34.
3. Tsuchiya, T. 1969. p. 573-580. In Induced Mutations in Plants. (Proc: FAO/IAEA Symopsium on the Nature, Induction and Utilization of Mutations in Plants, Pullman, Washington, 1969). Int. Atomic Energy Agency, Vienna.
4. Tsuchiya, T. 1972. Cytological identification of a translocation accompanied by a gene mutation. Barley Genet. Newsl. 2:107-108.
5. Tsuchiya, T., S.D. Tanksley, and R. Ward. 1976. Trisomic analysis of three mutant genes in barley. Barley Genet. Newsl. 6:95-96.


T. Tsuchiya and L. Seip. 1980. BGS 168, Ovaryless (male), ovl. Barley Genet. Newsl. 10:118.


T. Tsuchiya. 1983. Barley Genet. Newsl. 13:110. (The BGS number was changed to BGS 176.)
J.D. Franckowiak. 2005. Barley Genet. Newsl. 35:191.