UFV-M7: mutant yellow passionfruit genotype with photoperiod insensitivity for flowering

Abstract

-The development and characteristics of UFV-M7, a mutant with photoperiod insensitivity to beginning of flowering, are described. This genotype was fortuitously obtained by regeneration of nodal segments, exposed to gamma radiation. The possibility of incorporating photoperiod insensitivity into cultivars for producing regions is discussed for latitudes where the photoperiod determines the seasonality of harvest.

Phylogenetic inference applied to germplasm bank characterization and interspecific breeding in passionfruit

“…Wide crossing is considered the most important source of genetic variation for breeding in Passiflora. Disease resistance, ornamental value, self-compatibility, fruit quality and insensitivity to photoperiod are some of the current target traits of Passiflora breeding (Lira Júnior et al 2014, Ocampo et al 2016, Cerqueira-Silva et al 2018. Chances of breeding success depend on the correct identification and classification of species and on basic knowledge about chromosome number and breeding behavior (Hansen et al 2006).…”

Passiflora cristalina and Passiflora miniata: meiotic characterization of two wild species for use in breeding

“…Species of this genus are distributed in four subgenera: Astrophea, Deidamioides, Decaloba and Passiflora (Feuillet and MacDougal 2004). New species and mutants belonging to this genus are still being described (MacDougal 2001, Lira Júnior et al 2014, and about 90% of them are native to the Americas (Lopes 1991). Ferreira (1994) reported the existence of more than 200 Brazilian native species, which places the country in a privileged position in relation to the genetic resources of passion fruit trees.…”