Morphological and cytogenetic characterization of new ornamental Passiflora hybrids (P. ‘Vivis’ and P. ‘Jhovi’)

Viviane De Oliveira Souza,Cláusio Antônio Ferreira De Melo,Analu Cruz Souza,Gonçalo Santos Silva,Jôsie Cloviane De Oliveira Freitas,Margarete Magalhães Souza

doi:10.1590/1984-70332020v20n3a47

Viviane De Oliveira Souza, Cláusio Antônio Ferreira De Melo + Show 4 more

Open Access

https://doi.org/10.1590/1984-70332020v20n3a47

Copy DOI

Abstract

The present study was performed for the morphological and cytogenetic description of F1 hybrids obtained from a cross between Passiflora coccinea Aubl. and Passiflora hatschbachii Cervi. Hybridization was confirmed by genomic in situ hybridization (GISH). Corona banding was the most relevant floral descriptor for separating the hybrids into two groups, the cultivars P. 'Vivis' and P. 'Jhovi', and the parents and hybrids had diploid chromosome number 2n = 18. The F1 progenies exhibited normal meiotic behavior with normal tetrad production, which guaranteed high pollen viability (>70%) and fertile hybrids. Therefore, P. 'Vivis' and P. 'Jhovi' have the potential to be used for ornamental plants market.

Highlights

Passiflora hybridization has been conducted in many countries in Europe and North America (Abreu et al 2009), and in Brazil, is mainly conducted for disease resistance and high productivity
Interspecific crosses and morphological description of the hybrids and parents The cross between P. coccinea and P. hatschbachii resulted in one fruit with 248 seeds, 75.91% of which were viable
A characteristic that was absent in the parents, was the most significant floral descriptor that distinguished the hybrids into two groups, and gave rise to P

Summary

Introduction

Passiflora hybridization has been conducted in many countries in Europe and North America (Abreu et al 2009), and in Brazil, is mainly conducted for disease resistance and high productivity. Many ornamental hybrids have been developed and registered by the Passiflora Society International, including P. ‘Priscilla’ (Santos et al 2012), and P. ‘Bella’ (Belo et al 2018). In addition to backcrossed hybrids (BC1) produced from a cross between P. sublanceolata (Killip) J.M. MacDougal and P. foetida var. (Melo et al 2016) MacDougal and P. foetida var. foetida L. (Melo et al 2016)

Objectives

Methods

Results

Discussion

Conclusion