Friday, November 7, 2014

Re: [nafex] Blight resistant American Chestnuts

That's interesting. They are, in a sense, competing with the American Chestnut Foundation

http://www.acf.org/mission_history.php

The ACF also has some blight-resistant trees, and expect to have resistant trees available for planting in about 5 years. They got there by cross-breeding with Chinese chestnuts, but have been re-crossing and re-crossing with American chestnuts, while testing to retain the small number of genes that is responsible for resistence. They are currently working with trees that are 15/16th American.

http://www.acf.org/r_r.php

On Nov 6, 2014, at 9:08 PM, Elizabeth Hilborn wrote:

> They are apparently transgenic with a wheat oxalate oxidase gene which renders the trees resistant to fungal-associated pathology. They make the point that these new trees have more American Chestnut genetic material than the complex hybrids such as Dunstan.
>
> It will be interesting to see how the trials go...
>
> http://www.sciencedaily.com/releases/2014/11/141106082032.htm
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