Abstract
This paper was developed in order to verify the influence of nitrogen fertilization and different genotypes in the nutritional aspect and in the production of total phenols in passifloraceae. The experimental design was randomized blocks in a 5 × 2 × 2 factorial scheme, being five genotypes of Passiflora (three genotypes of Passiflora edulis, a genotype of Passiflora alata and a genotype of Passiflora ligularis), two levels of cow manure (with and without) and two doses of N (20 and 80 g), with four replicates. At 120 days after sowing, levels of foliar nutrient and total phenols were determined. Foliar N content varied depending on N doses, organic fertilization and the genotypes used. Foliar levels of P and K were higher when all genotypes received organic fertilization, while the levels of Fe and Mn were similar regardless of this fertilization. The levels of Ca and Mg were higher related to organic fertilization and the genotypes, in isolation. But the foliar contents of S, Zn and Cu increased only in relation to the used genotypes, and the average foliar content of total phenols found was 19.4 g·kg-1, ranging from 13.1 to 23.2 g·kg-1, being the lowest value observed in Passiflora alata without fertilization with cow manure. It is concluded that the nutritional requirement for N is greater for genotypes of the species Passiflora edulis in relation to the species Passiflora alata and Passiflora ligulares, and that the organic fertilization influences positively in the production of total phenols only for the genotype of sweet passion fruit.
Highlights
Passion fruit is a fruit species of great economic importance, being consumed both in the fresh and processed forms [1], in addition to presenting potential for extraction of secondary metabolites [2], as total phenols, which have antioxidant properties [3]
Among the nutrients provided via fertilization, nitrogen is the one which deserves attention because it takes part in many compounds considered indispensable for the growth and development of plants [9]
At the same time, [12] reported that organic fertilization has provided an increase on average weight of yellow passion fruits similar to plants subjected to conventional chemical fertilization
Summary
Passion fruit is a fruit species of great economic importance, being consumed both in the fresh and processed forms [1], in addition to presenting potential for extraction of secondary metabolites [2], as total phenols, which have antioxidant properties [3]. These compounds are genetically controlled, their quality and quantity [4] can be influenced by several factors; the plant nutrition is among them [4]-[7]. At the same time, [12] reported that organic fertilization has provided an increase on average weight of yellow passion fruits similar to plants subjected to conventional chemical fertilization
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
