Inheritance and QTL analysis of chilling and heat requirements for flowering in an interspecific almond x peach (Texas x Earlygold) F2 population
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Cantin, Celia M.
Blooming in temperate fruit species is triggered by chilling and heat requirements (CR and HR), with a wide range of requirements within the same species. CR for flower bud dormancy release has become a limiting factor for geographical adaptation of fruit trees in warmer regions. The present study investigated the genetic basis of CR and HR to break dormancy and flowering time (FT) in an almond x peach F2 progeny. FT, HR and CR were evaluated over two consecutive years (2015/2016 and 2016/2017). Seven out of the eight identified quantitative trait loci (QTLs) were found in both periods of analysis. They affected eight traits, and included a consistent QTL for breaking dormancy, CR and HR. Two of them, affecting FT and HR for FT (GDHF), colocalized in G1, and the remaining QTLs, affecting chilling and heat requirements, both influenced by dormancy breaking (DB), were located in G6. These results indicate that factors not related to DB affect flowering time in this population. Implications of the results in peach breeding are discussed.
633 - Cultius i produccions
Is part of
Cantin, Celia M., Xin-Wei Wang, María Almira, Pere Arús, and Iban Eduardo. 2020. "Inheritance And QTL Analysis Of Chilling And Heat Requirements For Flowering In An Interspecific Almond X Peach (Texas X Earlygold) F2 Population". Euphytica 216 (3). Springer Science and Business Media LLC. doi:10.1007/s10681-020-02588-9.
Grant agreement number
MINECO-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2015-68329-R/ES/DENTIFICACION Y CARACTERIZACION DE GENES IMPLICADOS EN LA FORMA Y JUGOSIDAD DEL FRUTO EN MELOCOTONERO Y ALMENDRO/ALMELO
INIA/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2015-00050-00-00/ES/Nuevas estrategias de mejora del melocotonero basadas en marcadores moleculares: introgresión asistida por marcadores y resíntesis/
MINECO/ /SEV-2015-0533/ES/ /
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