Physiological and molecular characterization of new apricot cultivars grafted on different prunus rootstocks

Irisarri P. ; Errea P. ; Pina A.

Resumen: In the last years, an important renewal of plant material from different breeding pro-grams 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), ‘Mi-ragreen’ (P. cerasifera × P. davidiana), ‘Mirared’ (P. cerasifera × 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 root-stocks 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.

Idioma: Inglés

DOI: 10.3390/agronomy11081464

Año: 2021

Publicado en: Agronomy (Basel) 11, 8 (2021), 10081713 [16 pp.]
ISSN: 2073-4395

Factor impacto JCR: 3.949 (2021)

Categ. JCR: AGRONOMY rank: 18 / 90 = 0.2 (2021) - Q1 - T1
Categ. JCR: PLANT SCIENCES rank: 55 / 239 = 0.23 (2021) - Q1 - T1

Factor impacto CITESCORE: 3.9 - Agricultural and Biological Sciences (Q2)

Factor impacto SCIMAGO: 0.654 - Agronomy and Crop Science (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/A12
Financiación: info:eu-repo/grantAgreement/ES/INIA/RFP2015-00015
Financiación: info:eu-repo/grantAgreement/ES/INIA/RTA2015-00046

Tipo y forma: Article (Published version)