Development and application of molecular marker linkage maps in woody fruit crops |
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Authors: | N F Weeden M Hemmatt D M Lawson M Lodhi R L Bell A G Manganaris B I Reischs S K Brown G -N Ye |
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Institution: | (1) Department of Horticultural Sciences, Cornell University, Geneva, NY, USA;(2) USDA, ARS, Appalachian Fruit Research Station, Kearneysville, WV, USA;(3) National Agricultural Research Foundation, Pomology Institute, 59200 Naoussa, Greece |
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Abstract: | Summary Extensive linkage maps, consisting primarily of molecular markers, are being developed for apple, pear, and grape varieties.
The intrinsically high heterozygosity of outcrossing perennial species is utilized to produce segregating populations directly
from a cross between varieties. Nearly complete linkage maps have been generated for the apple varieties ‘Rome Beauty’ and
‘White Angel’. The map for ‘Rome Beauty’ contains 161 molecular markers, while that for ‘White Angel’ has 251 markers. Maps
for the pear varieties, ‘Bartlett’ and NY10353, also are being developed. Linkages conserved between the pear and apple genomes
have been identified. In grapes, maps for four varieties are available, the most extensive being those for ‘Cayuga White’
and ‘Aurore’. The apple maps have been used to investigate the genetic basis of morphological and physiological characters.
A gene controlling the presence of anthocyanins in the skin of the fruit is located on linkage group 3. Genes controlling
early bud break, branching habit, and production of root suckers have also been identified and mapped. |
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Keywords: | Apple grape marker assisted selection pear RAPDs Pyrus communis |
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