[NAFEX] FB resistant pears
Natelson, Ethan, M.D.
ENatelson at tmhs.org
Fri Jun 19 15:14:04 EDT 2009
We cannot grow classical Bartlett pears in Houston, but do have
many other varieties that simulate named quality pears, but have lower
chill requirements. We have the Southern Bartlett, which looks like a
Bartlett, which is why Travis Callahan gave it that name. It is a
chance seedling from southern Louisiana but does not speak French. It
has good size, heavy bearing, good fireblight resistance (not quite as
good as Tenn) and has an excellent flavor on a fairly large spreading
tree on P.calleryana rootstock. It is the favorite pear of birds during
the day and tree rats in the evening.
From: nafex-bounces at lists.ibiblio.org
[mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of Richard Harrison
Sent: Friday, June 19, 2009 1:21 PM
To: North American Fruit Explorers
Subject: Re: [NAFEX] FB resistant pears
I think I have Morgan---I went for a lot of those TN varieties like
the one called 'Tenn". It is soft and fairly low chilling. One of the
lowest chillers we have is the old Asian 'Pineapple'.
I never had fireblight for maybe 20 years until a cold wet Spring
brought it on. It probably affected every variety to some extent---some
worse than others.
--- On Fri, 6/19/09, Kieran &/or Donna <holycow at frontiernet.net> wrote:
From: Kieran &/or Donna <holycow at frontiernet.net>
Subject: Re: [NAFEX] FB resistant pears
To: "North American Fruit Explorers" <nafex at lists.ibiblio.org>
Date: Friday, June 19, 2009, 12:36 PM
You can actually grow 100 varieties of pears that far south?
I get the impression that a lot of them simply don't get enough chill
hours to bloom that far south. As for growing Bartlett at all, I am
baffled that you and Ethan mention high quality pears that I've never
dreamed of trying to grow here. David Lockwood, UT's horticulture
expert, says he's never seen a Bartlett tree here more than 4 years old.
I really don't hold out too much hope for some of the varieties I've
ordered, I just wanted to see what they were like before they died, and
I didn't know any other way to go about it.
The UT pear program would check for resistance in seedlings
by grafting a branch of Bartlett onto each tree, and then inoculate the
Bartlett with FB. If it stopped spreading when it met the hybrid, the
seedling was considered resistant. Morgan is apparently one of the few
Bartlett seedlings ever produced that is truly resistant. Studies
showed that if parents that had at least some degree of resistance they
produced more resistant seedlings. Donna
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