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| Map Set Name: |
MWhiteAngel_2 |
[ Show Only This Set ] |
| Abbreviated Name: |
MWhiteAngel_2 |
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| Accession ID: |
22 |
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| Species: |
Malus domestica (Apple) |
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| Map Type: |
Genetic |
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| Map Units: |
cM |
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| Published On: |
01 January, 1994 |
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Data Source:
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RoseDB (defunct)
Abstract: http://www.intl-pag.org/pag/7/abstracts/pag7770.html
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Description:
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Author: Norm Weeden
The markers were divided into three groups: (1) those segregating as a result of heterozygosity in White Angel;(2) those segregating as a result of heterozygosity in Rome Beauty; and (3)those segregating as a result of heterozygosity in both parents. For analysis of amplified DNA fragments, we considered a parent heterozygous for a particular segregating fragment if DNA from that parent generated the fragment when used as template DNA. The expected segregation ratio for a locus heterozygous in only one parent was 1:1, whereas loci heterozygous in both parents were expected to display either a 3:1 ratio for dominant characters such as RAPDs or a 1:2:1 ratio for codominant allozymes and RFLPs. Goodness-of-fit between observed and expected segregation ratios was tested using chi-square analysis as performed by LINKAGE-1. This data set are those loci heterozygous only in Rome Beauty. MAPMAKER 2.0 was used to confirm locus order for each linkage group and to determine multipoint recombination frequencies among loci. A log-likelihood score of 3.0 and a recombination distance of no more than 20 cM were the minimal criteria for establishing linkage between markers. The 'ripple' function on MAPMAKER was employed to assess the robustness of the order of markers on a linkage group. data type f2 backcross (AxH, S=A, F=H U=Missing) symbols 1=A 2=H 0=U
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