Genetic model with clonal data, additive and dominance components

[Jaime Alberto Zapata Valenzuela]

Dear bloggers

I have 2 questions about the specification of the model:

1) I work with clonal data of Eucalyptus, where I have reciprocal use of the mother and father, i.e., one parent can be male or female, which is not possible in animal models. My question is if I can use the genetic model specifying this pedigree and how BreedR will interpret it.

2) Same data, I would like to see the partition of additive and dominance variance for my clones, where they come from full sib data. If so, how can I set the model?

As far as I see, BreedR does not deal with dominance, so I should use the Clone effect as just total genetic variance, is this also correct?

The program is  very useful! Thanks for any comment in advance

Jaime

[Facundo Muñoz]

Dear Jaime,

thank you for your patience, I've been busy these days.

1) As far as I can see, this is totally possible. However, do you expect that the genetic contribution of an individual to its offspring would be different depending on the role (male or female) that it plays in each case? The animal model will simply consider that the additive genetic value of an individual will be correlated with those of its ancestors (regardless of their role as male or female). Try it and let me know whether you find any problem or difficulty for interpretation.

2) There is no specific model for dominance built in in breedR. However, it is not difficult to do. You need to build your dominance matrix manually and feed it into a generic model [1]. We have done it before in this paper [2], for example. I cand send you a copy of the paper if you don't have access. A pre-print is available here [3].

Hope it helps.

ƒacu.-

[1] https://github.com/famuvie/breedR/wiki/Overview#generic-component

[2] https://link.springer.com/article/10.1007/s11295-017-1177-1

[3] https://www.uv.es/famarmu/doc/preprint-tgg2017.pdf

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[Jaime Alberto Zapata Valenzuela]

Facundo, thanks a million

I will check the pedigree specification.

I will check the paper information

Muchas Gracias

Jaime