Journal article
The Barley Chromosome 5 Linkage Map: II: Extension of the Map with Four Loci : II. Extension of the map with four loci
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.
Language: | English |
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Year: | 1975 |
Pages: | 17-26 |
ISSN: | 16015223 and 00180661 |
Types: | Journal article |
DOI: | 10.1111/j.1601-5223.1975.tb01495.x |