Transfer of resistance to potato cyst nematode (globodera pallida) into cultivated potato Solanum tuberosum through first division restitution 2n pollen |
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Authors: | Rodomiro Ortiz Javier Franco Masaru Iwanaga |
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Institution: | (1) The Royal Veterinary & Agricultural University, 40 Thorvaldsensvej, Dk 1871, Frederiksberg C, Copenhagen, Denmark;(2) Centro Internacional de la Papa, Apartado Postal 1558, Lima, Peru |
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Abstract: | Genetic resistance to potato cyst nematode is considered as one of the most effective means of increasing yield and reducing
nematode infestation levels in potato fields. In this study, resistance to this nematode was successfully transferred from
diploid tuber-bearing Solanums to the tetraploid gene pool using a 4x-2x breeding approach. More specifically, resistance
from Solanum vernei, S. sparsipilum and haploids of S. tuberosum group Andigena was introgressed into conventional tetraploid
clones, using first division restitution (FDR) 2n gametes. Furthermore, some of the FDR diploid parents had similar breeding
values as advanced resistant tetraploid clones which were developed only after several cycles of selection against the potato
cyst nematode.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | Solanum tuberosum 4x-2x crosses breeding values pest resistance tuber-bearing Solanums |
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