swampr
Global Moderator
Posts: 230
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Post by swampr on Sept 8, 2011 10:13:08 GMT -5
Is early blight resistance controlled by a single gene? If so, is it dominant or recessive?
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tomato
Tomato Gardener
Posts: 58
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Post by tomato on Oct 5, 2011 0:12:49 GMT -5
Current breeding lines that have EB tolerance are based on a single gene that is penetrant, meaning is has some effect if present in a plant but has the most effect if it is inherited from both parents. There are other genes known to convey EB tolerance but they have not been introgressed from wild species. One is in a Peruvianum that I have. Unfortunately, Peruvianum is difficult to very difficult to cross with Lycopersicum. There is also a group of genes in S. Chilense that convey EB tolerance.
DarJones
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Post by zamdor on Nov 27, 2011 2:09:27 GMT -5
don't most of the lb resistant types carry the eb resistance as well. try look towards defiant from johnny's selected seeds.
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