International Database for Barley Genes and Barley Genetic Stocks
BGS 378, Shrunken endosperm genetic 2, seg2
Stock number: BGS 378
Locus name: Shrunken endosperm genetic 2
Locus symbol: seg2
Previous nomenclature and gene symbolization:
Shrunken endosperm = se2 (2).
Inheritance:
Monofactorial recessive (1).
Located in chromosome 7HS (1, 5); seg2.b is about 5.7 cM proximal from the msg10 (male sterile genetic 10) locus (3); seg2.b is about 2.8 cM proximal from the sex6 (shrunken endosperm xenia 6) locus (4).
Description:
Seed size is greatly reduced with a 100-kernel weight about 15% of normal. Fertility is normal. Little or no starch is deposited in the seed that develops on homozygous plants. When seed is germinated on blotters in a 10% sucrose solution, seedling establishment was about 25% after transplanting to soil (1, 3). The line maintained as the seg2.b stock (GSHO 751) has nearly normal appearing endosperm.
No images
Origin of mutant:
A spontaneous mutant in Betzes (PI 129430) (1).
Mutational events:
seg2.b in Betzes (PI 129430) (1, 2).
Mutant used for description and seed stocks:
seg2.b from Betzes in a six-rowed line (GSHO 751); seg2.b in a balanced tertiary trisomic (BBT) stock T16c (5).
References:
1. Jarvi, A.J. 1970. Shrunken endosperm mutants in barley, Hordeum vulgare. Ph.D. Thesis. Montana State Univ., Bozeman.
2. Jarvi, A.J., and R.F. Eslick. 1971. BGS 378, Normal vs. shrunken endosperm, se2. Barley Genet. Newsl. 1:190-191.
3. Jarvi, A.J., and R.F. Eslick. 1975. Shrunken endosperm mutants in barley. Crop Sci. 15:363-366.
4. Netsvetaev, V.P. 1990. [Location of a shrunken endosperm gene, sex6, in barley.] Nauchno-Tekhn. Byull' VSGI, Odessa. No. 1 (75):31-35. [In Russian.]
5. Ramage, R.T. 1971. Translocations and balanced tertiary trisomics. Barley Genet. Newsl. 1:74-80.
Prepared:
A.J. Jarvi and R.F. Eslick. 1971. Barley Genet. Newsl. 1:190-191.
Revised:
R.F. Eslick. 1976. Barley Genet. Newsl. 6:136.
T. Tsuchiya. 1980. Barley Genet. Newsl. 10:125.
J.D. Franckowiak. 1997. Barley Genet. Newsl. 26:326.
