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american chestnut paper on line, free

This paper talks about backcross american chestnut and its performance during the first 4 years. It can be accessed free here

http://www.srs.fs.usda.gov/pubs/49856
by jclarke
Wed Mar 02, 2016 11:27 am
 
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Re: 3 year Chestnut blight survivor

I think I would be planting as many nuts off that tree as I could. There seems to be a slow gathering up of small, horizontal, additive resistance genes. Trees that can produce some nuts in the presence of blight attack may have some some favourable genes. if the nuts from several of those could be pooled and shared, it might be possible to accumulate useful numbers of genes in the population. Food for thought?
by jclarke
Fri Jun 02, 2017 10:37 am
 
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Re: 3 year Chestnut blight survivor

The Canadian Chestnut Council has been backcross breeding for blight resistance, and also gathering up small resistances from local pure species trees. The average resistance of both groups is about the same, with some really resistant trees in both groups. It appears both approaches work. I remember reading that the soy beans who had resistance bred up from
smaller additive resistance genes did as well as the GMO OxOx ones, so Canada discontinued the GMO soy beans.............mostly to protect exports to Europe.

I think something similar happened in corn, rust being the issue at the time.

Blight resistance has been bred into tomatoes, from the little currant types which already have it...think Candi Too and other grocery store types.

Think potatoes too, which can be had in blight resistant strains, both GMO and traditionally bred up.

This might work in chestnuts :)
by jclarke
Sat Aug 05, 2017 1:55 pm
 
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