MR 4, given for Corynebacterium resistance, resists Pseudomonas and Fusarium 2 . MR 4 and 72
'TR 4.4. pedigrees are similar.
However, Plovdiv 8/12, bred for Corynebacterium resistance, does not show any resistance to
Fusarium 2 and P. solanacearum.
So we conclude that this tropical material resistant to Pseudomonas and Plovdiv 8/12 do not have
the same Corynebacterium resistance factors.
We presently are trying to consolidate these factors by recurrent selection of highly
Corynebacterium resistant lines based on Plovdiv 8/12 from one side, 72 TR 4.4. and I.R.A.T. L3 from the
other side.
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