Published in Scientific Papers. Series B, Horticulture, Volume LXII
Written by Mihaela (ERCULESCU) STOICA, Dorel HOZA, Lenuţa Constantina CHIRA, Constantin PĂUN, Ligia ION
Fungal plant pathogens belonging to the genus Venturia cause damaging scab diseases of members of the Rosaceae. In terms of economic impact, the most important of these are Venturia inaequalis, which infects apple, and Venturia pirina, which is a pathogen of European pear. Given that Venturia fungi colonise the sub-cuticular space without penetrating plant cells, it is assumed that effectors that contribute to virulence and determination of host range will be secreted into this plant-pathogen interface. The use of resistance varieties in the pollination process is an important way to obtain varieties with genetic resistance to disease. In this paper were used as mother genitors some selections from Pyrus serotina ('9/34-94’, '20/1-91’ and '5/104-84’) with genetic resistance to diseases and pests and as father genitors (pollen) two valuable varieties of the European assortment ('Williams’, 'Beuré Bosc’) and 'Cristal’ cv. - Romanian pear variety registered in 2009 at Research Station for Fruit Growing Voinesti, Dambovita. The selection '9 / 34-94’ performed the best results in the pollination process in crossing process with 'Williams’ and 'Cristal’ cvs., with 21.7%, respectively 32.11% fruit set.
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