期刊
AGRONOMY-BASEL
卷 11, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/agronomy11081464
关键词
graft compatibility; histology; PAL; Prunus armeniaca L; scion-rootstock interaction
资金
- Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria (INIA) [RTA2015-00046, RFP2015-00015]
- Gobierno de Aragon-European Social Fund, European Union
The study determined the graft compatibility of 13 new apricot cultivars on four Prunus rootstocks, showing 'Miragreen' and 'Mirared' as promising rootstocks for apricot with the highest degree of compatibility.
In the last years, an important renewal of plant material from different breeding programs is taking place in apricot in order to improve resistance to biotic stresses, extension of the harvest season, fruit quality, and productivity. However, the graft compatibility of many of these cultivars with most popular Prunus rootstocks is unknown, and this is an essential agronomical trait for their better performance and longevity. Hence, the introduction of new cultivars requires knowledge of the extent and nature of incompatibility reactions before releasing these cultivars on the market. In this study, the determination of graft compatibility was carried out in 13 new apricot cultivars grafted on four Prunus rootstocks: 'Marianna2624' (P. cerasifera x P. musoniana), 'Miragreen' (P. cerasifera x P. davidiana), 'Mirared' (P. cerasifera x Nemared), and 'Montclar' (P. persica L. seedlings) at early stages of development. By combining cytomorphological, anatomical, and phenylalanine ammonia-lyase (PAL) gene expression analysis at the graft interface, as well as different vegetative parameters, the results highlighted 'Miragreen' and 'Mirared' as promising rootstocks for apricot, showing the highest degree of compatibility with more than 90% of the apricot cultivars. These results provide useful information for breeders and growers by selecting the most suitable scion-rootstock for efficient orchard design by planting compatible graft combinations.
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