Journal of Biotechnology & Biomaterials
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Climatic changes in recent years and changes in the areas of different cultures have had an impact for reducing of the plant
resistance to pests and diseases, increasing of the appearance of new diseases or strengthening the known ones.Alternariosis
is the most damaging disease of tomatoes encountered lately in the Republic of Moldova. The reaction of parents-varietes and
reciprocal hybrids of tomato F1 under the action of theA. solani, A. consortiale, A. alternate filtrates was manifested differently
at seeds germination, root and stem growth: inhibition, stimulation or unresponsiveness. By bifactorial analysis of variance was
found that at the stage of germination the genotype (86.6 to 89.7%) has the majority of the influence in the reaction of parents
and reciprocal hybrids of F1 tomatoes under the action of the filtrates from Alternaria spp. culture. Trifactorial analysis of the
relations tomatoes genotype x Alternaria species x isolates, based on the root reaction, has demonstrated that 65.1% depends
on the genotype, 11.3% - are due to the genotype x Alternaria species interactions and 9.1% - depends on the genotype x isolate
interaction. The obtained data reveal that the creation of the tomatoes genotypes, resistant to this disease, by the selection
useful genotypes has a real chance of success.
Grigorcea Sofia has completed PhD studies in October 2013 within the Institute of Genetics, Physiology and Plant Protection of the Academy of Sciences of
Moldova. Now she is working as a trainee researcher. She has published 18 scientific papers in journals.
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