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Combining different linkage maps in sugar beet ( Beta vulgaris L.) to make one map
Author(s) -
Schumacher K.,
Schondelmaier J.,
Barzen E.,
Steinrücken G.,
Borchardt D.,
Weber W. E.,
Jung C.,
Salamini F.
Publication year - 1997
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1997.tb00971.x
Subject(s) - sugar beet , biology , gene mapping , linkage (software) , population , genetic linkage , genetics , genetic marker , beta (programming language) , gene , chromosome , computer science , agronomy , demography , sociology , programming language
Several genetic maps for sugar beet ( Beta vulgaris L.), from different German research groups, have been published and it is now possible to consider combining them with the aid of the common markers. The computer program JOINMAP (versions 1.3 and 2.0) was used for pair‐wise combination of three populations. Several problems arose: the genetic background of the populations, different population structures (F 2 versus F 1 × F 1 ), different number of polymorphic loci for common probes in the populations to be combined, different estimates of the recombination rates between the same markers and differences between the J oin M ap versions. The maps from two F 2 populations could be integrated into a single map, but it was more appropriate to construct separate maps for the F 2 populations and the F 1 × F 1 population using common markers as reference points only.