000			01386nam a2200217Ia 4500
008			220216s9999 xx 000 0 und d
100			_aGuen Vincent Le
245		0	_aQualitative resistance of Hevea to Phyllachora huberi P.Henn
260			_bEuphytica _c2000
300			_a211-217
520			_aQualitative observations of Hevea spp. resistance to Phyllachora huberi were carried out on 200 clones in a collection and 21 full-sib progenies under natural conditions of infestation. A total of 42 clones, mostly originating from the natural range of the Hevea genus, and at least two species (H.brasiliensis and H.benthamiana) revealed total resistance to the parasite. For nine of the thirteen resistant x susceptible and resistant x resistant progenies studied, the ratio of susceptible: resistant plants suggested the existence of a total resistance mechanism produced by a dominant allele at a single locus for the P.huberi race(s) present at the study site. For three of the progenies involving the same resistant parent, it was possible to locate the gene (called Phr) at 14.7cm from the adhi isozyme locus.
650			_aHevea
650			_aIsozyme marker
650			_aMonogenic resistance
650			_aPhyllachora huberi
650			_aPhysiological race
650			_aQualitative resistance
700			_aMattos Carlos R R
700			_aSeguin Marc
942			_cJS
999			_c66149 _d66149