A putative mutant of a self-compatible yellow passion fruit with the corona color as a phenotypic marker

Bragantia

Margarete Magalhães Souza²  Alexandre Pio Viana¹  Telma Nair Santana Pereira¹ 

[1] ,Universidade Estadual de Santa Cruz Departamento de Ciências Biológicas Ilhéus BA

关键词: Passion flower;    self-compatibility;    in vivo pollination;    meiotic behavior;    pollen viability;    Maracujazeiro;    autocompatibilidade;    polinização in vivo;    comportamento meiótico;    viabilidade polínica;   

DOI  :  10.1590/S0006-87052010000100003

来源: SciELO

【 摘 要 】

Yellow passion fruit (Passiflora edulis f. flavicarpa) is a self-incompatible crop with purple corona flowers (PCF). Plants exhibiting white corona flowers (WCF) were observed in an experimental field located in Campos dos Goytacazes - RJ, Brazil. This study was performed in order to test the fertility of these genotypes through studies of in vivo pollination, meiotic behavior and pollen viability. Using in vivo pollination, the mean fruit set percentage, obtained from self-pollinations at the moment that flowers open, was 70.83% in WCF and 0% in PCF. In terms of cytological analysis, for both kinds of plants, WCF and PCF, the meiotic behavior was considered regular, considering the high meiotic index estimated for both of them, 96.3% and 97.7%, and pollen viability, 98% and 99.5%, respectively. Such results suggest that the genotype WCF is self-compatible and interesting for use in genetic improvement of yellow passion fruit.

【 授权许可】

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