# Double-pair mating

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{{Short description|Plant breeding technique}}
'''Double-pair mating''' ('''DPM''') is a mating (crossing) design used in [plant breeding](/source/plant_breeding). Each individual is mated with two others.

== Principles ==
thumb|right|250px|Figure 1: DMP scheme
In Fig. 1 a connected variant of DPM is shown. DPM is an efficient mating design in balanced breeding programmes, where equal contribution from each breeding population member is desired.<ref>Rosvall, O. 1999. Enhancing Gain from Long-Term Forest Tree Breeding while Conserving Genetic Diversity. PhD-thesis. Acta Universitatis Agriculturae Sueciae. Silvestria 109 65pp+4 chapters</ref> With DPM the number of new families created is equal to the number of individuals mated. DPM allows to efficiently utilise positive [assortative mating](/source/assortative_mating) for more efficient use of the breeding population members for deployment to seed [orchards](/source/orchards).<ref>Ruotsalainen, S. 2002. Managing breeding stock in the initiation of a long-term tree breeding program. PhD-thesis. Finnish Forest Research Institute, Research Papers 875., 95 + 61 p [http://www.metla.fi/julkaisut/mt/875/]</ref> In comparison with single pair mating, DPM has the advantages that the genes from the individual are transmitted to next generation even if one of the crosses fails; that safer estimates of breeding values of the parents get possible (useful for [seed orchard](/source/seed_orchard)s, where tested trees are preferred); and that genes from different ancestors have a better chance to combine.

== References ==
<references/>

Category:Breeding
Category:Plant breeding

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Adapted from the Wikipedia article [Double-pair mating](https://en.wikipedia.org/wiki/Double-pair_mating) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Double-pair_mating?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.