Evaluation of the hybrids progeny of variety ‘Talgarskaya krasavitsa’ to pear scab resistance and the identification gene fragment to scab resistance

Abstract

Research work was studied in RUE ‘Institute for Fruit Growing’ (Belarus). In this study a different degree of resistance to pear scab caused by the fungus Venturia pirina Aderh. in field conditions was found. The research objects are 119 seedlings received from 5 crossing of pear variety ‘Talgarskaya krasavitsa’ and other parent forms. Using the molecular marker PVf1 in the genomes of cvs. ‘Desertnaya rossoshanskaya’, ‘Patten’, ‘Sokrovische’, ‘Talgarskaya krasavitsa’ and 15 hybrid seedlings the gene fragment to pear scab resistance was identified. The greatest number of plants with this fragment was detected in the hybrid progenies ‘Desertnaya rossoshanskaya’ × ‘Talgarskaya krasavitsa’ and ‘Talgarskaya krasavitsa’ × ‘Sokrovische’.