Chlorophyll indexes and gas exchanges of Talisia esculenta seedlings in organic substrates and biofertilizer

Adailza Guilherme Cavalcante,Josinaldo Da Silva Henrique,Alian Cássio Pereira Cavalcante,José Flávio Cardozo Zuza,Murielle Magda Medeiros Dantas,Raunira Da Costa Araújo

doi:10.14808/sci.plena.2020.050203

Abstract

The Talisia esculenta (popularly called Talisia esculenta) is a native plant from Brazil with great socioeconomic importance regarding its extraction cultivation, however only a few scientific studies were carried out with this species, especially concerning its physiological characteristics. The aim of the present study was to evaluate the utilization of different organic substrates and biofertilizers through the soil on the physiological performance of T. esculenta seedlings. The experiment was performed between August and November 2015. The trial design consisted of randomized blocks, with a factorial arrangement 4 x 2 corresponding to four substrates (Test: control group; SE: commercial substrate; RFV: compost of fruit and vegetable remains; RPI: substrate with remains of industrialized food), in both presence and absence of biofertilizer, with five replicates. The analyzed variables were chlorophyll indexes a, b and gas exchanges. The chlorophyll rates a, b and total were higher on SE, RFV and RPI, but no influences of the biofertilizer were detected on the chlorophyll indexes of T. esculenta seedlings. All substrates (SE, RFV and RPI) increased the chlorophyll indexes a, b and total of the seedlings. The substrates increases the chlorophyll a, b and total indices, except for the control substrate independent of the application of biofertilizer. The efficiency of gas exchange increases with the addition of biofertilizer.

Highlights

Talisia esculenta Raldk are widespread in Brazil, found especially in the states of Amazonas, Pará, Bahia, Ceará, Maranhão, Pernambuco, Piauí, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Rio de Janeiro, São Paulo, and Paraná [1]
The experiment was performed in August to November 2015 in a greenhouse of the Center of Human, Social and Agrarian Sciences (CCHSA) of the Federal University of Paraíba (UFPB), Bananeiras-PB
The chlorophyll indexes were higher on the SE, RPI and RFV in 10, 17 and 14% respectively for chlorophyll a, 22, 32 and 32% for chlorophyll b and 9, 17 and 15% for total chlorophyll, when compared to the control treatment (Figures 1A, 1C and 1E)

Summary

Introduction

Talisia esculenta Raldk are widespread in Brazil, found especially in the states of Amazonas, Pará, Bahia, Ceará, Maranhão, Pernambuco, Piauí, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Rio de Janeiro, São Paulo, and Paraná [1]. With an enormous diversity of little studied fruit trees, many of them with a great potential of commercial use [2] In this context, T. esculenta trees are of great ecological, economic and medicinal interests, being indicated for the recovery of riparian forests, as well as in natura consumption and the production of jams, jelly and candies with high vitamin contents [3]. Fertilization with organic fertilizers has been widely used due to its capacity of providing variable quantities of different nutrients, especially nitrogen, phosphorus and potassium. These are highly efficient in providing increased water retention conditions of soils and an adequate nutritional quality to different cultures [5]

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Results