scholarly journals Phytomass and quality of yellow passion fruit seedlings under salt stress and silicon fertilization

2020 ◽  
Vol 11 ◽  
pp. e3400
Author(s):  
Genilson Lima Diniz ◽  
Reginaldo Gomes Nobre ◽  
Geovani Soares de Lima ◽  
Leandro de Pádua Souza ◽  
Lauriane Almeida dos Anjos Soares ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Salt Stress ◽  
Block Design ◽  
Passion Fruit ◽  
Northeastern Brazil ◽  
Shoot Ratio ◽  
Root Shoot Ratio ◽  
Silicon Fertilization ◽  
Plant Nursery

The semiarid region of Northeastern Brazil is characterized by long drought periods, and the use of saline waters appears as an alternative for the expansion of irrigated areas. Associated with the use of these waters, silicon fertilization constitutes an important attenuator of salt stress. In this perspective, this study aimed to evaluate the phytomass production and quality of the passion fruit cultivar ‘Gigante Amarelo’ grown with saline water and silicon fertilization. The experiment was conducted in a plant nursery belonging to the Center of Agrifood Science and Technology, in the municipality of Pombal-PB. A completely randomized block design in a 5 x 5 factorial scheme was used, referring to five levels of electrical conductivity of the irrigation water (0.3, 1.0, 1.7, 2.4, and 3.1 dS m-1) and five doses of silicon fertilization (0; 25; 50; 75, and 100 g of potassium silicate/plant), with four replications and two plants per plot. The phytomass accumulation (leaves, stem, and roots), as well as the total dry phytomass, shoot dry phytomass, root/shoot ratio, and the quality index of Dickson were evaluated. The data obtained were subjected to the F-test at 0.01 and 0.05 level of probability. The electrical conductivity of water from 0.3 dS m-1 caused the decrease of phytomass production in seedlings of the passion fruit cultivar ‘Gigante Amarelo’, although it is possible to produce good quality passion fruit seedlings with water salinity up to 3.1 dS m-1. The doses of silicon fertilization mitigated the effect of salt stress on the root/shoot ratio of plants of the passion fruit cultivar ‘Gigante Amarelo’.

scholarly journals MORFOFISIOLOGIA E QUALIDADE DE MUDAS DE MARACUJAZEIRO SOB DIFERENTES NATUREZAS CATIÔNICAS DA ÁGUA E H2O2

Irriga ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 184-205
Author(s):  
José Joedson Lima Silva ◽  
Geovani Soares De Lima ◽  
Lauriane Almeida dos Anjos Soares ◽  
Iara Almeida Roque ◽  
Maíla Vieira Dantas ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Salt Stress ◽  
Agricultural Sector ◽  
Block Design ◽  
Passion Fruit ◽  
Water Salinity ◽  
Stress Effect ◽  
Passiflora Edulis ◽  
E Mail

MORFOFISIOLOGIA E QUALIDADE DE MUDAS DE MARACUJAZEIRO SOB DIFERENTES NATUREZAS CATIÔNICAS DA ÁGUA E H2O2     JOSÉ JOEDSON LIMA SILVA1; GEOVANI SOARES DE LIMA2; LAURIANE ALMEIDA DOS ANJOS SOARES1; IARA ALMEIDA ROQUE1, MAÍLA VIEIRA DANTAS2 E LUDERLÂNDIO DE ANDRADE SILVA2   1 Unidade Acadêmica de Ciências Agrárias, Universidade Federal de Campina Grande, UFCG, Rua Jario Vieira Feitosa, 1770, Bairro dos Pereiros, Pombal, PB, Brasil. E-mail: [email protected]; [email protected]; [email protected]. 2 Unidade Acadêmica de Engenharia Agrícola, Universidade Federal de Campina Grande, UFCG, Rua Aprígio Veloso, 882 - Universitário, Campina Grande, PB, Brasil. E-mail: [email protected]; [email protected].; [email protected].     1 RESUMO   No decorrer dos anos, a salinidade das águas se tornou um dos principais obstáculos do setor agrícola. Este trabalho objetivou avaliar o crescimento, as relações hídricas e a qualidade de mudas de maracujazeiro irrigadas com águas de diferentes composições catiônicas e peróxido de hidrogênio. O experimento foi conduzido em condição de casa de vegetação, no munícipio de Pombal - PB, utilizando-se o delineamento em blocos casualizados, com fatorial 6 x 4, sendo seis composições catiônicas da água de irrigação [S1 – Testemunha (0,3 dS m-1); S2 - Na+; S3 - Ca2+; S4 - Na+ + Ca2+; S5 - Mg2+ e S6 - Na+ + Ca2+ + Mg2+) e quatro concentrações de peróxido de hidrogênio – H2O2 (0, 20, 40 e 60 μM), com quatro repetições. Com exceção do S1, os demais tratamentos foram irrigados com água de 3,6 dS m-1. A concentração de 40 µM de H2O2 reduziu o efeito do estresse salino na área foliar das plantas irrigadas com águas constituídas de Na+, Na+ + Ca2+ e Na+ + Ca2+ + Mg2+. As concentrações de 20 e 40 µM de H2O2 elevaram o índice de qualidade de Dickson das plantas irrigadas com água constituída de Na+ + Ca2+ + Mg2+.   Palavras-chave: Passiflora edulis f. flavicarpa, salt stress, peróxido de hidrogênio.     SILVA, J. J. L.; LIMA, G. S. de; SOARES, L. A. dos A.; ROQUE, I. A.; DANTAS, M. V.; SILVA, L. de A. MORPHOPHYSIOLOGY AND QUALITY OF PASSION FRUIT SEEDLINGS UNDER DIFFERENT CATIONIC NATURES OF WATER AND H2O2     2 ABSTRACT   Over the years, water salinity has become one of the main obstacles in the agricultural sector. This study aimed to evaluate the growth and quality of passion fruit cv. BRS GA1 as a function of different cationic nature of the water and exogenous application of hydrogen peroxide. The experiment was conducted in greenhouse conditions at the Center of Agrifood Science and Technology of the Federal University of Campina Grande, Pombal, Brazil, using a randomized block design, with a 6 x 4 factorial, corresponding to six combinations of water salinity [S1 – Control (0,3 dS m-1); S2 - Na+; S3 - Ca2+; S4 - Na+ + Ca2+; S5 - Mg2+ and S6 - Na+ + Ca2+ + Mg2+] and four concentrations of hydrogen peroxide - H2O2 (0, 20, 40 and 60 μM), with four repetitions. With the exception of S1, the other treatments were irrigated with water of 3.6 dS m-1. The 40 µM concentration of H2O2 reduced the salt stress effect on leaf area of plants irrigated with water consisting of Na+, Na+ + Ca2+ and Na+ + Ca2+ + Mg2+. The 20 and 40 µM concentrations of H2O2 increased the Dickson quality index of plants irrigated with water consisting of Na+ + Ca2+ + Mg2+.   Keywords: Passiflora edulis f. flavicarpa Degener, salt stress, hydrogen peroxide.

scholarly journals Physiological indices and phytomass partition in precocious dwarf cashew clones irrigated with saline waters

2020 ◽  
Vol 11 ◽  
pp. e3196
Author(s):  
Geovani Soares de Lima ◽  
Jailson Batista da Silva ◽  
Lauriane Almeida dos Anjos Soares ◽  
Hans Raj Gheyi ◽  
Reginaldo Gomes Nobre ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Salt Stress ◽  
Leaf Area ◽  
Water Salinity ◽  
Stress Indicators ◽  
Relative Growth ◽  
Physiological Indicators ◽  
Shoot Ratio ◽  
Physiological Indices ◽  
Root Shoot Ratio

This research aimed to evaluate the physiological indices and the accumulation of phytomass in clones of precocious dwarf cashew under salt stress during rootstock formation. The experiment was conducted in greenhouse in the municipality of Pombal-PB. The experimental design was in randomized blocks, and the treatments were organized in a 5 x 3 factorial arrangement, constituting the levels of electrical conductivity of the irrigation water - ECw (0.4 -Control; 1.2; 2.0; 2.8, and 3.6 dS m-1) and the clones of precocious dwarf cashew (Faga 11, Embrapa 51, CCP 76), with three replications and two plants per plot. Water salinity higher than 0.4 dS m-1 resulted in a decrease of the relative growth in plant height, leaf area, and phytomass accumulation in the cashew plant. The cashew clones are sensitive to water salinity from 0.4 dS m-1. Among the physiological indicators, the leaf area ratio, the sclerophylly index, and the root/shoot ratio of the precocious dwarf cashew are highlighted as salt stress indicators. The use of water with 0.4 dS m-1 of electrical conductivity is recommended for the formation of cashew rootstocks.

scholarly journals Gas exchanges and growth of passion fruit seedlings under salt stress and hydrogen peroxide1

2019 ◽  
Vol 49 ◽  
Author(s):  
André Alisson Rodrigues da Silva ◽  
Geovani Soares de Lima ◽  
Carlos Alberto Vieira de Azevedo ◽  
Hans Raj Gheyi ◽  
Leandro de Pádua Souza ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Salt Stress ◽  
Leaf Area ◽  
Irrigation Water ◽  
Saline Water ◽  
Block Design ◽  
Passion Fruit ◽  
Saline Stress ◽  
Gas Exchanges

ABSTRACT The semi-arid region of the Brazilian Northeast has adequate edaphoclimatic conditions for the passion fruit production, but the water used for irrigation commonly has high concentrations of salts that are harmful to the plant growth and development. A previous supply of hydrogen peroxide induces the acclimation of plants under saline stress conditions, reducing deleterious effects on their growth and physiology. This study aimed to evaluate the gas exchanges and growth of passion fruit as a function of irrigation with saline water and exogenous application of hydrogen peroxide. The experiment was carried out under greenhouse conditions, using a randomized block design, in a 4 x 4 factorial arrangement, being four levels of irrigation water electrical conductivity (0.7 dS m-1, 1.4 dS m-1, 2.1 dS m-1 and 2.8 dS m-1) and four hydrogen peroxide concentrations (0 µM, 25 µM, 50 µM and 75 µM), with four replicates and two plants per plot. The hydrogen peroxide application attenuated the deleterious effects of the irrigation water salinity on transpiration, CO2 assimilation rate, internal carbon concentration, plant height and leaf area of yellow passion fruit, at 60 days after sowing, with the concentration of 25 µM being the most efficient. Irrigation using water with electrical conductivity above 0.7 dS m-1 negatively affects the gas exchanges and growth of passion fruit, being the stomatal conductance and leaf area the most sensitive variables to the salt stress.

scholarly journals Hydrogen peroxide in the acclimation of yellow passion fruit seedlings to salt stress

2021 ◽  
Vol 25 (2) ◽  
pp. 116-123
Author(s):  
André A. R. da Silva ◽  
Luana L. de S. A. Veloso ◽  
Geovani S. de Lima ◽  
Carlos A. V. de Azevedo ◽  
Hans R. Gheyi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Salt Stress ◽  
Irrigation Water ◽  
Block Design ◽  
Co2 Assimilation ◽  
Passion Fruit ◽  
Randomized Block Design ◽  
Four Levels ◽  
Yellow Passion Fruit

ABSTRACT The objective of the present study was to evaluate the effect of exogenous application of hydrogen peroxide on the emergence, growth and gas exchange of yellow passion fruit seedlings subjected to salt stress. The experiment was conducted in pots (Citropote®) under greenhouse conditions, in the municipality of Campina Grande, PB, Brazil. Treatments were distributed in a randomized block design, in a 4 x 4 factorial arrangement, with four levels of electrical conductivity of irrigation water (0.7, 1.4, 2.1 and 2.8 dS m-1) associated with four concentrations of hydrogen peroxide (0, 25, 50 and 75 μM), with four replicates and two plants per plot. Irrigation using water with electrical conductivity above 0.7 dS m-1 negatively affects the emergence and growth of passion fruit. Hydrogen peroxide concentrations between 10 and 30 μM induce the acclimation of passion fruit plants to salt stress, mitigating the deleterious effects of salinity on the relative growth rate in stem diameter and leaf area, stomatal conductance, transpiration, CO2 assimilation rate and instantaneous carboxylation efficiency. Irrigation water salinity combined with hydrogen peroxide concentrations above 30 μM causes reduction in passion fruit growth and physiology.

scholarly journals Formation of ‘Crioula’ guava rootstock under saline water irrigation and nitrogen doses

2016 ◽  
Vol 20 (8) ◽  
pp. 739-745 ◽  
Author(s):  
Leandro de P. Souza ◽  
Reginaldo G. Nobre ◽  
Evandro M. da Silva ◽  
Geovani S. de Lima ◽  
Francisco W. A. Pinheiro ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Salt Stress ◽  
Experimental Design ◽  
Deleterious Effect ◽  
Saline Water ◽  
Dry Weight ◽  
Saline Water Irrigation ◽  
N Dose

ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil; increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock; irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings.

scholarly journals Production and quality of melon hybrid Mandacaru irrigated with different levels of salinity

2011 ◽  
Vol 29 (4) ◽  
pp. 600-604 ◽  
Author(s):  
Damiana Cleuma de Medeiros ◽  
José Francismar de Medeiros ◽  
Francisco Aécio de L Pereira ◽  
Sonally Cristina de M Silva ◽  
Maria das Graças Amâncio
Keyword(s):  
Block Design ◽  
Fruit Production ◽  
Solid Content ◽  
Salinity Level ◽  
Soluble Solids ◽  
Northeastern Brazil ◽  
Soluble Solid Content ◽  
Salinity Levels ◽  
Solids Content

Among the problems faced by the melon crop in the state of Rio Grande do Norte, northeastern Brazil, the effect of water and soil salinity is considered one of the key factors to limit fruit production and quality. The aim of this work was to study the effects of using irrigation waters with different salinity levels on yield and quality of fruits of the yellow melon hybrid Mandacaru. A randomized complete block design was used with five treatments (irrigation water salt concentrations: 0.54, 1.48, 2.02, 3.03, 3.9 dS m-1) and four replications. The effects of these concentrations were evaluated through, number of marketable fruits per plant, marketable and total fruit yield, average marketable fruit mass, soluble solids content and pulp firmness. Increment in water salinity level negatively influenced crop yield. The 3.9 dS m-1 salinity level caused yield losses of 20.31%, due to the reduction of fruit number per plant. The highest soluble solid content and the highest pulp firmness values were estimated to occur at salinity levels 2.09 and 3.5 dS m-1, respectively.

scholarly journals HISTOLOGICAL ANALYSIS AND PERFORMANCE OF SOUR PASSION FRUIT POPULATIONS UNDER DIFFERENT ROOTSTOCKS RESISTANT TO Fusarium spp

2018 ◽  
Vol 40 (1) ◽  
Author(s):  
Moisés Ambrósio ◽  
Willian Krause ◽  
Celice Alexandre Silva ◽  
Laís Alves Lage ◽  
Natan Ramos Cavalcante ◽  
...  
Keyword(s):  
Histological Analysis ◽  
Block Design ◽  
Welding Process ◽  
Anatomical Study ◽  
Optical Microscope ◽  
Passion Fruit ◽  
Randomized Block Design ◽  
Physical And Chemical ◽  
Sour Passion Fruit

ABSTRACT The present study aimed to describe histological traits of the graft welding process and evaluate the effect of rootstocks on the physical and chemical traits and the productivity of sour passion fruit populations. The experiment was arranged in a randomized block design, in a 4x2 + 4 factorial scheme (cultivars / canopy x rootstocks), three replicates and nine plants per plot. Commercial cultivars and populations and Passiflora alata and P. nitida rootstocks, in addition to ungrafted plants were used as canopy. Cleft grafting was the grafting type adopted. Traits analyzed such as productivity and physical and chemical quality of fruits were submitted to analysis of variance and compared by the Tukey test. The canopy morphology was evaluated according to descriptors of the Ministry of Agriculture, Livestock and Supply. Grafting was carried out for each graft/rootstock combination for histological analysis. Sections were obtained by freehand cuts, stained and mounted on semi-permanent slides, examined under optical microscope and photomicrographed. Rootstocks affected the early cultivation and reduced productivity and number of fruits of passion fruit populations. Grafting did not affect the quality of fruits or the canopy morphology. Considering the complete culture cycle, P. alata species is able to be used as rootstock. The anatomical study demonstrates the occurrence of better compatibility in the connection of P. edulis tissues on P. alata, compared to grafting on P. nitida.

scholarly journals Quality of arabic coffee under different processing systems, drying methods and altitudes

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Kênia Barbosa Do Carmo ◽  
Jéssica Conceição Barbosa do Carmo ◽  
Marcelo Rodrigo Krause ◽  
Aldemar Polonini Moreli ◽  
Paola Alfonsa Vieira Lo Monaco
Keyword(s):  
Electrical Conductivity ◽  
Block Design ◽  
Processing System ◽  
Sensory Attributes ◽  
Drying Methods ◽  
Arabica Coffee ◽  
Coffee Beans ◽  
The Social ◽  
Wet Processing

The quality of coffee is one of the most important requirements in the commercialization of the product, and the post-harvest stage is decisive in the production of excellent coffees. The region of Mutum, MG, Brazil, is predominantly coffee-growing, with high potential for the production of specialty coffees. Due to the social and economic importance of coffee production in the Matas de Minas region, research has been demanded with the aim of providing technological information that provides improvements in quality and consequent price aggregation of the coffee bag. Among the several factors that may affect coffee quality are the processing system, the drying method and the altitude. Thus, the objective of this work was to evaluate the quality of Arabica coffee at different altitudes, submitted to different processing systems and drying methods. The work was conducted at the Cabeceira do Imbiruçu, in a randomized complete block design,with treatments arranged in a scheme comprising sub-subdivided plots (2 x 2 x 2), with four replications. In the plots, the two altitudes (850 and 1050 m), in the subplotsthe two processingsystems (dry (natural) and wet (peeled cherry)) and in the sub-subplotstwo drying methods (cement and suspended yard, both covered). Sensory and electrical conductivity analyzes were performed. The fruits of coffee trees located at altitudes of 1050 m have sensory attributes superior to those of altitudes of 850 m. The best results of the coffee flavor and aroma sensory attributes were obtained in the wet processing system when compared to a dry (natural) processing system. The electrical conductivity of the coffee beans obtained in the wet processing system was lower than that obtained in the dry processing system (natural), which gives a better beverage quality. Drying methods in suspended yard and cement yard, both with plastic cover and if technically conducted, do not influence the sensory characteristics of the Arabica coffee.

Influence of Silicon Fertilization on Nutrient Accumulation, Yield and Fruit Quality of Melon Grown in Northeastern Brazil

Silicon ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 937-943 ◽  
Author(s):  
Clístenes Williams Araújo do Nascimento ◽  
Glauber Henrique de Souza Nunes ◽  
Hailson Alves Ferreira Preston ◽  
Fernando Bruno Vieira da Silva ◽  
Welka Preston ◽  
...  
Keyword(s):  
Fruit Quality ◽  
Northeastern Brazil ◽  
Nutrient Accumulation ◽  
Silicon Fertilization

scholarly journals Physico-chemical Parameters of Honey From Melipona mondury Smith, 1863 (Hymenoptera: Apidae: Meliponini)

2018 ◽  
Vol 10 (7) ◽  
pp. 196 ◽  
Author(s):  
Rogério Marcos de Oliveira Alves ◽  
Jacqueline Lemos Viana ◽  
Henrique de Abreu Cerqueira Sousa ◽  
Ana Maria Waldschmidt
Keyword(s):  
Electrical Conductivity ◽  
Water Activity ◽  
Reducing Sugars ◽  
Chemical Properties ◽  
Northeastern Brazil ◽  
Chemical Parameters ◽  
Technical Regulation ◽  
Mean Values ◽  
Physico Chemical

The physico-chemical properties of honey produced by the stingless bee Melipona mondury from Atlantic Forest in the state of Bahia, northeastern Brazil were evaluated. The evaluated characteristics included: water content, electrical conductivity, pH, acidity, water activity, ashes, diastase, hydroxymethylfurfural (HMF), reducing sugars and saccharose values. The honey samples showed mean values of 29.18% for moisture; 391.5 μS for electrical conductivity; pH of 4.06; 34.3 meq kg-1 for acidity; 0.73 for water activity; 0.18% for ashes; 4.05 (Goethe unit) for diastase; 1.60% for HMF; 65.42% for reducing sugars; and 2.14% of saccharose. Only the diastase activity was above the limits accepted by the Technical Regulation for Identity and Quality of Honey (Brazilian Ministry of Agriculture and Supplies). Most parameters are according to those reported in honeys from other species of stingless bees in Brazil.

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