Quote:
Originally Posted by goodwin
Hi Fred,
We had a wet 2015 season and this line is definitely resistant to late blight. There was resistance to early blight as well, but not across the board. I don't know about septoria, which we haven't seen here yet.
I'm not sure about the genetics, either. However, I think it is not the result of a major gene as we see in some hybrid varieties, but a more general resistance. There were heirlooms with resistance to earlier races, but not against what is showing up now. Matt's Wild is an exception, as you may know.
Lee
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Every habrochaites rootstock that I tried seemed to be completely resistant to Septoria, so it may be a common property of all S. habrochaites lines. I think there is a good chance your interspecies hybrid will also be resistant.