Rooting of Herbaceous and Semihardwood Cuttings of Guava cv. Século XXI, under Varying Concentrations of Indolebutyric Acid

2019 ◽  
pp. 1-9
Author(s):  
Jussara Cristina Firmino Da Costa ◽  
Rejane Maria Nunes Mendonça ◽  
Gerciane Cabral Da Silva ◽  
Silvanda de Melo Silva ◽  
Walter Esfrain Pereira ◽  
...  
Keyword(s):  
Experimental Design ◽  
Significant Interaction ◽  
Dry Weight ◽  
Psidium Guajava ◽  
Commercial Production ◽  
Control Treatment ◽  
Distilled Water ◽  
Indolebutyric Acid ◽  
Rooting Of Cuttings

In the commercial production of guava seedlings (Psidium guajava L.) the quality of the cuttings, homogeneity, high percentage of rooting are the factors important to be analyzed. Therefore, as the Século XXI cultivar is recent, it is necessary to do more studies regarding the behavior of this guava to the factors that aid in the rhizogenic process. The objective of this work was to verify the concentrations of indolebutyric acid (IBA) that provide the best rooting of cuttings herbaceous and semihardwood, as well as to verify the best kind of cuttings used for vegetative propagation the guava cuttings cultivar ‘Século XXI’. The experimental design was completely randomized in a 5 x 2 + 1 factorial design, beginning with five concentrations of IBA (0, 1000, 1500, 2000 and 2500 mg L-1), two kinds of cuttings (herbaceous and semihardwood) and one control treatment (immersed in distilled water for 12 hours), with four replications and 10 cuttings per plot. In relation of the variables: the percentage of cuttings live without roots, callus, number of roots and dry weight of shoots did not present significant interaction among treatments, not adjusting to any regression model. Therefore, concluding that the herbaceous cutting is the most indicated for the propagation of guava seedlings of ‘Século XXI’; The concentration of 2500 mg L-1 of IBA promotes a higher percentage of rooted semihardwood cuttings without leaf; The hormone solution diluted with alcohol 50% (v/v) resulted in toxicity for herbaceous and semihardwood cuttings cv. Século XXI.

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 The effect of guava (Psidium guajava) leaf extract on the quality of cobia (Rachycentron canadum) fillets during ice storage

2021 ◽  
Vol 13 (Aquaculture) ◽  
pp. 52-63
Author(s):  
Minh Phu Tran ◽  
Thi Kim Duyen Huynh ◽  
Le Anh Dao Nguyen ◽  
Thi Nhu Ha Nguyen ◽  
Quoc Thinh Nguyen ◽  
...  
Keyword(s):  
Thiobarbituric Acid ◽  
Psidium Guajava ◽  
Control Treatment ◽  
Ice Storage ◽  
Thiobarbituric Acid Reactive Substances ◽  
Rachycentron Canadum ◽  
Sensory Property ◽  
Ice Water ◽  
Water Holding

The aim of this study is to evaluate the effects of Psidium guajava leaves extract on the quality of cobia (Rachycentron canadum) fillets during in ice storage. A group of cobia fillets was soaked in Psidium guajava extract solutions at concentration of 0.03% (w/v) for 30 minutes while the other group soaked in cold ice water, considered as control treatment. The experimental fillets were packed and stored in ice for 15 days. Sampling were done on the 1st, 5th, 10th and 15th day. Analyzed parameters included temperature, total viable counts (TVC), sensory property, pH, moisture, water holding capacity (WHC), texture, total volatile base nitrogen (TVB–N), peroxide value (PV), Thiobarbituric acid reactive substances (TBARs), and fillet color. The results indicated that cobia fillets treated with guava extract solutions 0.03% showed significantly higher sensory property, lower PV and TBARs compared to the control treatment during ice storage. Based on the sensory property and total viable counts, cobia fillets can be used up to 10 days in both treatments remaining high quality of the cobia fillet.

scholarly journals Quality of rubber tree rootstock seedlings grown in protected environments and alternative substrates

2020 ◽  
Vol 42 ◽  
pp. e43469
Author(s):  
Abimael Gomes da Silva ◽  
Edilson Costa ◽  
Talita Cristina Campos Pereira ◽  
Flávio Ferreira da Silva Binotti ◽  
Erivaldo José Scaloppi Junior ◽  
...  
Keyword(s):  
Experimental Design ◽  
Rubber Tree ◽  
Dry Weight ◽  
Fine Sand ◽  
Tree Seedlings ◽  
Quality Indices ◽  
High Quality ◽  
Plant Nursery ◽  
Randomized Experimental Design

This study aimed to evaluate the quality of Hevea brasiliensis seedlings, a GT1 clone, produced in protected environments in a variety of substrates. The treatments consisted of 13 substrates composed of combinations of cattle manure, soil from a ravine, medium vermiculite, superfine vermiculite and washed fine sand and two environments: a greenhouse with 50% shade using aluminized screen and a plant nursery with 50% shade using a Sombrite® screen. There were no replications of the environments; therefore, each one was considered an experiment. For each environment, a completely randomized experimental design with five replications was used to evaluate the substrates. Subsequently, the average squares of the residuals of individual variance analyses of these treatments (substrates) were evaluated, and because they did not exceed an approximate ratio of 7:1, a combined analysis of experiments was performed with Sisvar software. Two hundred eighty days after sowing, the dry weight, plant height, stem diameter, diameter at five centimeters above soil and the seedling quality indices were evaluated. Results indicated that substrates with a low amount of manure and sand and a high amount of vermiculite (S9 and S13) produced rubber tree seedlings of high-quality. The environment with greater radiation availability was better for the development of high-quality rubber tree seedlings.

scholarly journals Productive and qualitative parameters of four Physalis species cultivated under colored shade nets

2018 ◽  
Vol 40 (2) ◽  
Author(s):  
Daniel Fernandes da Silva ◽  
Rafael Pio ◽  
Maurizio Micheli ◽  
Joyce Dória Rodrigues Soares ◽  
Adalvan Daniel Martins ◽  
...  
Keyword(s):  
Experimental Design ◽  
Sun Exposure ◽  
Fruit Production ◽  
Amazon Region ◽  
Control Treatment ◽  
Light Spectrum ◽  
Full Sunlight ◽  
Blue Shade ◽  
Brazilian Biodiversity

Abstract The genus Physalis L. has great importance in the framework of Brazilian biodiversity especially in the Amazon region. The use of colored shading nets allow manipulating the light spectrum, and thus supplying the appropriate quantity and quality of light for each species and maximizing production. The purpose of this study was to evaluate the effects of shade nets on fruit production and qualitative parameters of four species belonging to genus Physalis. The experimental design was random blocks with a 4 x 5 factorial scheme, four species of Physalis (P. peruviana, P. pubescens, P. minima and P. ixocarpa) and four colors of shade nets (white, blue, red and black), besides the control treatment under full sun exposure. Fruits were collected weekly and evaluated for longitudinal and transversal diameter and biomass with and without a calyx. Finally the percentage of calyx biomass compared to the total fruit biomass, number of fruits per plant and production were determined. A differentiated response was found among the species regarding the coloring of the converter shade nets. Plants of P. peruviana had the best productive and qualitative parameters of fruits when cultivated in full sunlight or under white shade nets, P. pubescens and P. minima when cultivated in full sunlight or under white and blue shade nets, and P. ixocarpa under red or black shade nets.

ENRAIZAMENTO DE ESTACAS DE VARIEDADES DE FIGUEIRA COM O EMPREGO DE ÁCIDO INDOLBUTÍRICO

2018 ◽  
Vol 33 (1) ◽  
pp. 81
Author(s):  
Rafael Augusto Ferraz ◽  
Sarita Leonel ◽  
Jackson Mirellys Azevedo Souza ◽  
Marcelo de Souza Silva ◽  
Bruno Henrique Leite Gonçalves
Keyword(s):  
Experimental Design ◽  
Dry Weight ◽  
Ficus Carica ◽  
Indolebutyric Acid ◽  
Root Volume ◽  
Rooted Cuttings ◽  
Number Of Leaves ◽  
Fig Tree ◽  
Receive Treatment ◽  
Fig Trees

O presente trabalho teve como objetivo avaliar o desempenho propagativo de estacas semilenhosas de variedades de figueira, com o uso de ácido indolbutírico. As variedades avaliadas foram Roxo de Valinhos, White Genova, PI – 189 e Troiano e a dosagem empregada do ácido indolbutírico foi 2000 mg L-1. O delineamento experimental utilizado foi o inteiramente ao acaso, em esquema fatorial 4 x 2 (variedades x com e sem aplicação do regulador vegetal), com cinco repetições e dez estacas por parcela experimental. Foram avaliadas a porcentagem de estacas vivas, de estacas enraizadas e de estacas brotadas, número de brotos, comprimento da maior raiz (cm), número de folhas, volume da raiz (cm3), peso seco da raiz (mg) e peso seco das folhas (mg). As estacas que não receberam a aplicação do regulador vegetal tiveram maior porcentagem de estacas vivas, enraizadas e brotadas, com exceção das variedades Roxo de Valinhos e Troiano, que não apresentaram diferença na aplicação. Mediante esses resultados, foi possível concluir que não é recomendado o uso do ácido indolbutírico para essas variedades, na época de coleta das estacas correspondente ao mês de agosto.PALAVRAS-CHAVE: Ficus carica L., propagação, regulador de crescimento FIG TREE VARIETIES CUTTINGS ROOTING USING INDOLEBUTYRIC ACID ABSTRACT: The present study aimed to evaluate the propagative performance of fig trees cuttings with application of indolebutyric acid (IBA). The evaluated varieties were “Roxo of Valinhos, White Genova, PI -189 and Troiano and the dosage of indolebutyric acid used was 2000 mg L-1. The experimental design used was entirely random, in factorial scheme 4 x 2 (varieties x with or without application of plant regulator), with five replications and ten cuttings per plot. It was evaluated the percentage of live cuttings, rooted cuttings and sprouted cuttings, number of shoots, length of the largest root (cm), number of leaves, root volume (cm3), root dry weight (mg) and leaves dry weight (mg). The cuttings that did not receive treatment with indolebutyric acid had  higher percentage of live, rooted and sprouted cuttings, except for  Roxo of Valinhos” and Troiano varieties, which showed no difference among treatments . Based on the results, it is possible to conclude that the use of indolebutyric acid for such varieties is not recommended in August, month of  cuttings harvest in this study. KEYWORDS: Ficus carica L., propagation, growth regulator.

scholarly journals DOSES DE POTÁSSIO E LÂMINAS DE IRRIGAÇÃO NA QUALIDADE DE MUDAS DE EUCALIPTO

Nativa ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 643-649
Author(s):  
Antonio Henrique Cordeiro Ramalho ◽  
Fernanda Dalfior Maffioletti ◽  
Paulo André Trazzi ◽  
Eduardo Cordeiro Ramalho ◽  
Nilton Cesar Fiedler
Keyword(s):  
Water Management ◽  
Experimental Design ◽  
Aerial Part ◽  
Dry Mass ◽  
Control Treatment ◽  
Eucalyptus Urophylla ◽  
Tukey Test ◽  
Genetic Potential ◽  
Base Substrate

A produtividade florestal depende das potencialidades genéticas das matrizes, do ambiente proposto pelos substratos, frequência de irrigação, disponibilidade de luz, nutrição e das condições fitossanitárias. Assim, objetivou-se com o presente estudo analisar os efeitos da aplicação de potássio e de irrigação na qualidade de mudas de Eucalyptus urophylla. Para tal adotou-se o delineamento experimental em parcelas subdivididas definindo as 2 lâminas de irrigação (10 mm e 15 mm) como parcelas e os 5 níveis de potássio (0; 1,2; 2,4; 4,8; e 9,6 g L-1) como subparcelas, em 5 repetições compostas por 9 plantas. A comparação entre os métodos foi feita através teste de Tukey com 5% de probabilidade. Aos 120 dias, foram avaliadas: altura da parte aérea, diâmetro do colo, massa seca da parte aérea e da raiz. O tratamento testemunha apresentou as melhores médias em todos os parâmetros, sendo considerado o mais eficiente. A lâmina de irrigação de 15 mm foi considerada a mais eficiente. Portanto, conclui-se que qualquer que seja o incremento de potássio na produção de mudas, o mesmo deve se relacionar harmonicamente com a quantidade pré-existente no substrato base e com as exigências da cultura, de maneira que haja equilíbrio entre todas as partes. Palavras-chave: manejo hídrico; rustificação; substrato; casa de sombra.   IRRIGATION AND POTASSIUM LEVELS IN THE QUALITY OF EUCALYPTUS   ABSTRACT:  Forest productivity depends on the genetic potential of the matrices, the environment proposed by the substrates, frequency of irrigation, availability of light, nutrition and phytosanitary conditions. Thus, the aim of this study was to analyze the effects of potassium and irrigation on the quality of Eucalyptus urophylla seedlings. For this purpose, the experimental design was adopted in subdivided plots, defining the 2 layers of irrigation (10 mm and 15 mm) as plots and the 5 levels of potassium (0; 1.2; 2.4; 4.8; and 9.6 g L-1) as subplots, in 5 repetitions composed of 8 plants. The comparison between the methods was made using the Tukey test with a 5% probability. At 120 days, the following were evaluated: height of the aerial part, diameter of the neck, dry mass of the aerial part and the root. The control treatment showed the best averages in all parameters, being considered the most efficient. The 15 mm irrigation blade was considered the most efficient. Therefore, it is concluded that whatever the potassium increase in the production of seedlings, it must be harmoniously related to the pre-existing quantity in the base substrate and to the requirements of the culture, so that there is balance between all parts. Keywords: water management; rustification; substrate; shadow house.

scholarly journals Manipulation of Light Environment to Produce High-quality Poinsettia Plants

HortScience ◽  
2009 ◽  
Vol 44 (3) ◽  
pp. 702-706 ◽  
Author(s):  
Diego A. Mata ◽  
Javier F. Botto
Keyword(s):  
Light Quality ◽  
Production Systems ◽  
Dry Weight ◽  
Quality Parameters ◽  
Commercial Production ◽  
Control Treatment ◽  
Euphorbia Pulcherrima ◽  
Additive Effects ◽  
Transparent Film ◽  
Lateral Branches

The phytochromes, a family of photoreceptors that maximally absorb red (R) and far-red (FR) light, play an important role in defining the architecture of the plant and consequently its value in the market. In this work, we evaluated the manipulation of light quality as an alternative to the use of plant growth regulators (PGRs) to produce poinsettia plants (Euphorbia pulcherrima Willd. ex Klotzsch) without affecting commercial quality parameters. ‘Freedom Red’ poinsettia plants were cultivated in two light environments characterized by different R/FR ratios in combination with or without one application of PGR. We used a photoselective film that significantly reduced the FR component of the light and a transparent film to obtain high and low R/FR ratios (5.7 and 1.1, respectively). Plants cultivated under a high R/FR ratio were shorter and more compact than those grown under transparent film. Other quality characters like bract and leaf area, dry weight, stem diameter, number of lateral branches, and plant width did not differ significantly between light treatments. Flowering time was slightly delayed in plants grown under a high R/FR ratio compared with those cultivated under the control treatment. Additive effects were detected between light quality and PGR factors indicating that light quality manipulation is an alternative strategy to reduce or to replace the use of PGRs in commercial production systems that usually require several PGR applications.

scholarly journals Propagação vegetativa de hibisco com diferentes tipos de estacas e concentrações de ácido indolbutírico

2015 ◽  
Vol 6 (3) ◽  
pp. 291
Author(s):  
Sra. Rafaela Souza ◽  
Márkilla Zunete Beckmann Cavalcante ◽  
Marluce Pereira Damasceno Lima ◽  
Tamnata Ferreira Alixandre ◽  
Rejane Teixeira Nascimento
Keyword(s):  
Survival Rate ◽  
Experimental Design ◽  
Root Length ◽  
Significant Interaction ◽  
Dry Weight ◽  
Root Dry Weight ◽  
Hibiscus Rosa Sinensis ◽  
External Conditions ◽  
Number Of Leaves ◽  
Rooting Capacity

The propagation of the hibiscus is done preferably by cutting. However, the success of this technique depends on the internal and external conditions cuttings, that will influence directly into your rooting capacity. In this sense, the objective was to evaluate the effect of three types of cuttings (apical, middle and basal) and four concentrations of IBA (0, 1000, 3000 and 5000 mg L- 1) in the propagation through cuttings of Hibiscus rosa-sinensisL. cv. Snow Queen. The experiment was conducted in a greenhouse under intermittent mist at the Federal University of Piauí (UFPI), Campus Profa. CinobelinaElvas, Bom Jesus-PI for the period from May 23 to July 7, 2012. The experimental design was completely randomized in a factorial arrangement 3x4 (Type of cuttings x Concentration IBA) with four replications. At 45 days after implantation of the experiment were evaluated: percentage of rooting, survival rate, number of shoots, number of leaves, average root length, dry weight of shoot and root dry weight. There was no significant interaction between the factors studied. There is effective for cutting type. The technique of propagation by cuttings of Hibiscus rosa-sinensis L. cv. Snow Queen is efficient through the use of basal cuttings.

scholarly journals Number of leaflets on rooting of lychee herbaceous cuttings

2016 ◽  
Vol 46 (6) ◽  
pp. 1003-1006 ◽  
Author(s):  
Ediane Conceição Alves ◽  
João Emmanuel Ribeiro Guimarães ◽  
Camila Kauffmann Becaro Franco ◽  
Antonio Baldo Geraldo Martins
Keyword(s):  
Regression Analysis ◽  
Experimental Design ◽  
Polynomial Regression ◽  
Experimental Plot ◽  
Indolebutyric Acid ◽  
Polynomial Regression Analysis ◽  
Rooting Of Cuttings ◽  
Exotic Fruits

ABSTRACT: Lychee is one of the most popular exotic fruits in Brazil, and has both in natura and industrial potential. The objective of the present study was to evaluate the influence of the number of leaflets on lychee herbaceous cuttings treated with the indolebutyric acid (1000mg L-1). The experimental design was completely randomized, with 4 replications and 10 cuttings per experimental plot. Treatments consisted of cuttings with zero (0), one (1), two (2), three (3), and four (4) leaflets. After 180 days, the rooting and survival percentages and the number and length of roots were evaluated. The data were subjected to polynomial regression analysis. The increase in the number of leaflets was advantageus for all studied variables, with an increase in the survival, rooting of cuttings, and number and length of roots. The herbaceous cuttings of lychee tree are viable, provided that at least four leaflets remain in the herbaceous cutting.

scholarly journals Evaluation of ethanol preconditioning as a rapid seed vigour and viability test

2019 ◽  
pp. 1045-1052
Author(s):  
Jerffeson Araujo Cavalcante ◽  
Gizele Ingrid Gadotti ◽  
Ricardo Miotto Ternus ◽  
Fernanda da Motta Xavier ◽  
Raimunda Nonada Oliveira da Silva ◽  
...  
Keyword(s):  
Seedling Emergence ◽  
Dry Weight ◽  
Distilled Water ◽  
Test Results ◽  
Seed Vigour ◽  
Cowpea Seeds ◽  
Randomized Design ◽  
Ethanol Preconditioning ◽  
Probability Measurement

It is essential that tests for evaluating seed vigour be faster and increasingly efficient to enable precise differentiation among batches. In this way, it is possible to evaluate the quality of seeds based on the anaerobic metabolism of cells when exposed to environments lacking oxygen. Thus, the objective of this study was to establish methodology for evaluating the viability and vigour of 3 lots of cowpea (Amendoim cultivar) seeds using the ethanol test. The treatments were carried out in a completely randomized design with four replications. For the test, 25 seeds were stored in hermetically sealed PET (Polyethylene the Ethylene) bottles containing 40 ml of distilled water and subjected to 3 soaking times in distilled water (6, 24, and 48 h) at a controlled temperature of 40°C in a germinator. The amount of ethanol produced was quantified with the aid of an adapted breath analyser. The results are expressed as mg L-1; these data were then compared with data for the following: germination; the first germination count; the total length, root length and shoot length of the seedling; dry weight of the seedling; emergence in the field; emergence speed index; and electrical conductivity. The experimental design was completely randomised, and the data were subjected to analysis of variance and correlation analysis. The results were compared using the Tukey test at 5% probability. Measurement of ethanol after 6 or 48 h of soaking at 40°C was effective for determining the viability and vigour of cowpea seeds. As ethanol test results have high correlation with germination and vigour test results, this approach is a viable alternative for analysts and seed producers.

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