CONTRIBUTIONS REGARDING THE INCREASING OF APPLE TREES GENETIC VARIABILITY IN THE PROCESS OF OBTAINING IMPROVING BIOLOGICAL MATERIAL
2013
Valeria Petre | Gheorghe Petre
The researches performed at the Research Station for Fruit Growing Voinesti in the period 2004–2012, point out the creation of some new apple selection bases from the biological material, obtained by sexual hybridization. The increasing of genetic variability was remarked especially at the hybrid combinations, at which we used as genitors the recently created apple elites with genetic resistance to diseases, which included different resistance genes. The scab and mildew resistance feature was transmitted to a greater percentage in the case of hybrid combinations between the resistant cultivars - and in a more reduced percentage at the hybrid combinations: resistant cultivar x sensitive cultivar. The material undergoing selection and grafted in the nursery constitutes the base of the evaluation in test culture of the apple elites, regarding the features of productivity, fruits quality and genetic resistance to diseases
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