HOST GENETIC FACTOR’S INFLUENCE ON THE PESTS OSTRINIA NUBILALIS – FUSARIUM ROSEUM – UNDER CONDITIONS OF GENETICALLY-DIFFERENT TROPHIC BASE PUBLISHED

Dorin Jurca, Gheorghe Popescu
Since any resistance to the parasitical attack (Ostrinia nubilalis – European maize gimlet and Fusarium roseum – stalk rot or fusariosis) has not been induced so far, excepting the genetic engineering preoccupations, which managed to do this in the transgenic way, we considered it was necessary to experiment a genetically-different trophic base, represented by conventional and transgenic maize hybrids, attempting to constitute new resistance sources in the first case or to ameliorate the sensibility in the conventional maize hybrids cultivated at the moment. Successive to our results regarding the genetic reaction of the hybrids studied, in Arad County, we may conclude the following: Under conditions of comparative crop, in the refuge area system, the tolerance gets lost, proving that under normal experimental conditions the tolerance is not total, but relative; under such conditions, the genetic response is of sensibility; The type of the conventional maize genetic response is of sensibility to fusariosis at cob level ; The type of the Yield-gard maize genetic response is of transgenic resistance to fusariosis at cob level, and not of euresistance or genetic resistance.
conventional hybrids; YG hybrids; genic complementarity; prophylaxis
Presentation: oral

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