Physiological and Molecular Characterization of New Apricot Cultivars Grafted on Different Prunus Rootstocks

In the last years, an important renewal of plant material from different breeding programs is taking place in apricot order to improve resistance biotic stresses, extension harvest season, fruit quality, and productivity. However, graft compatibility many these cultivars with most popular Prunus rootstocks unknown, this essential agronomical trait for their better performance longevity. Hence, introduction new requires knowledge extent nature incompatibility reactions before releasing on market. study, determination was carried out 13 grafted four rootstocks: ‘Marianna2624’ (P. cerasifera × P. musoniana), ‘Miragreen’ davidiana), ‘Mirared’ Nemared), ‘Montclar’ persica L. seedlings) at early stages development. By combining cytomorphological, anatomical, phenylalanine ammonia-lyase (PAL) gene expression analysis interface, as well vegetative parameters, results highlighted promising apricot, showing highest degree more than 90% cultivars. These provide useful information breeders growers by selecting suitable scion-rootstock efficient orchard design planting compatible combinations.