TY - JOUR
T1 - The Barley Chromosome 5 Linkage Map
T2 - II: Extension of the Map with Four Loci
AU - Jensen, J.
AU - Jørgensen, Jørgen Helms
PY - 1975
Y1 - 1975
N2 - The distances between nine loci on barley chromosome 5 have been studied in five two-point tests, three three-point tests, and one four-point test. Our previous chromosome 5 linkage map, which contained eleven loci mapped from literature data (Jensen and Jørgensen 1975), is extended with four loci: wst5 (white streaks), necl (necrotic leaf spots), Ml-nn (powdery mildew resistance), and Pa4 (leaf rust resistance). Further, the two sections of the map are united, and the precision of the map is improved.
A system for designating the positions of the loci on the linkage map is proposed. A 0-position is fixed on the map by a locus (necl), which has a good marker gene located centrally in the linkage group. The positions of the other loci are their distances in centimorgans from the 0-position; loci in the direction of the short chromosome arm are assigned positive values and those in the direction of the long arm negative values.
AB - The distances between nine loci on barley chromosome 5 have been studied in five two-point tests, three three-point tests, and one four-point test. Our previous chromosome 5 linkage map, which contained eleven loci mapped from literature data (Jensen and Jørgensen 1975), is extended with four loci: wst5 (white streaks), necl (necrotic leaf spots), Ml-nn (powdery mildew resistance), and Pa4 (leaf rust resistance). Further, the two sections of the map are united, and the precision of the map is improved.
A system for designating the positions of the loci on the linkage map is proposed. A 0-position is fixed on the map by a locus (necl), which has a good marker gene located centrally in the linkage group. The positions of the other loci are their distances in centimorgans from the 0-position; loci in the direction of the short chromosome arm are assigned positive values and those in the direction of the long arm negative values.
U2 - 10.1111/j.1601-5223.1975.tb01495.x
DO - 10.1111/j.1601-5223.1975.tb01495.x
M3 - Journal article
SN - 0018-0661
VL - 80
SP - 17
EP - 26
JO - Hereditas (Print)
JF - Hereditas (Print)
IS - 1
ER -