MAGNETIC FIELD AND GIBBERELIC ACID AS PRE-GERMINATION TREATMENTS OF PASSION FRUIT SEEDS

<p>The aim of this study was to evaluate the effect of pre-germination treatments (magneto-priming and immersion of seeds in gibberellic acid solution) on variables associated with germination, emergence and vigor of Passiflora edulis seeds ‘BRS Gigante Amarelo’ cultivar. Seeds were extracted from fruits, washed, immersed for 6 hours in solutions with different GA3 concentrations and later arranged in a circular form in Petri dishes at temperature of 25°C, with and without exposure to magnetic field. Subsequently, analyses associated with the germination and emergency test were carried out. The experimental design was completely randomized design, with 3x2 factorial, three GA3 concentrations (0, 50 and 100 mg L-1) and presence/absence of magnetic field (MF), with four replicates of 20 seeds each. Variables germination percentage, germination speed index, mean germination time, percentage of emerged seedlings, emergence speed index, shoot length and root length and seedling dry weight were evaluated. Results indicate that the exposure of passion fruit seeds to MF in an isolated way stimulates seed germination, emergence and vigor, being an alternative to conventional treatments based on chemical substances.</p>

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Evidence of maternal effect on germination and vigor of sour passion fruit

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452020002 ◽

2020 ◽

Vol 42 (4) ◽

Author(s):

Luciana Domiciano Silva Rosado ◽

João Paulo Gava Cremasco ◽

Carlos Eduardo Magalhães dos Santos ◽

Claudio Horst Bruckner ◽

Maria Helena Menezes Cordeiro ◽

...

Keyword(s):

Maternal Effect ◽

Dry Mass ◽

Germination Percentage ◽

Passion Fruit ◽

Reciprocal Effects ◽

Passiflora Edulis ◽

Randomized Design ◽

High Germination ◽

Completely Randomized Design ◽

Sour Passion Fruit

Abstract The seminiferous propagation of Sour Passion Fruit (Passiflora edulis Sims) is the main kind of multiplication due to the ease formation of seedlings. However, the reduced number of productive and homogeneous cultivars reflects the need for genetic breeding. The objective of this study was to assess the maternal and reciprocal effects in vigor and germination of Sour Passion Fruit seeds. The experiment was conducted in a completely randomized design in the factorial scheme, with two structure (hybrid and reciprocal) and ten crosses with four replicates (50 seeds) in trays containing inert sand in germination chamber. Before sowing, it was obtained the weight of 100 seeds, and at 28 days germination percentage, emergence speed index, total seedlings length, shoot length and main root length, number of normal seedlings and dry mass per seedlings were evaluated. The reciprocal effects tell us which genotype is most promising when used as the female or male parent for the trait studied. It can be inferred that there is maternal effect influencing the weight of 100 seeds, emergence, emergence speed index and the number of normal seedlings. There was influence of the parent on the expression of traits in seeds of Sour Passion Fruit. It is important to define the paternal and maternal parent to obtain seeds with high germination potential.

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Phytotoxicity of Chitosan and SiO2 Nanoparticles to Seed Germination of Wheat (Triticum aestivum L.) and Barley (Hordeum vulgare L.) Plants

Notulae Scientia Biologicae ◽

10.15835/nsb9210075 ◽

2017 ◽

Vol 9 (2) ◽

pp. 242-249 ◽

Cited By ~ 5

Author(s):

Faride BEHBOUDI ◽

Zeinalabedin TAHMASEBI SARVESTANI ◽

Mohamad Zaman KASSAEE ◽

Seyed Ali Mohamad MODARES SANAVI ◽

Ali SOROOSHZADEH

Keyword(s):

Germination Rate ◽

Dry Weight ◽

Sio2 Nanoparticles ◽

Triticum Aestivum L ◽

Germination Percentage ◽

Hordeum Vulgare L ◽

Randomized Design ◽

Direct Exposure ◽

Contrast Exposure ◽

Mean Germination Time

Plants such as wheat and barley that are strategically important crops need to be considered to develop a comprehensive toxicity profile for nanoparticles (NPs). The present study was aimed to investigate the effects of chitosan and SiO2 NPs on wheat and barley plants. Two factorial experiments (seeds priming and direct exposure) were performed based on a completely randomized design in four replications. Results showed that the seeds priming with the NPs had not significant effect on germination parameters such as Germination Percentage (GP), Germination Rate (GR), Germination Value (GV), Mean Germination Time (MGT), Pick Value (PV) and Mean Daily Germination (MDG). In contrast, exposure of the seeds to the NPs had significant effects on these parameters. In both experiments, treatments had significant effects on shoot, seedling, root length, fresh and dry weight, as well as vigor indexes as compared to the control. In most traits, the best concentration of NPs was 30 ppm, whereas applications of the NPs with 90 ppm displayed adverse effects on majority of the studied traits. According to these results, selectivity in applications of NPs with suitable concentration and method is essential for different plant species.

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Temperatures and substrates for germination and vigor of Erythroxylum pauferrense Plowman seeds

Acta Scientiarum Biological Sciences ◽

10.4025/actascibiolsci.v41i1.46030 ◽

2019 ◽

Vol 41 ◽

pp. e46030

Author(s):

João Everthon da Silva Ribeiro ◽

Arliston Pereira Leite ◽

Jackson Silva Nóbrega ◽

Edna Ursulino Alves ◽

Riselane de Lucena Alcântara Bruno ◽

...

Keyword(s):

Dry Mass ◽

Germination Percentage ◽

Seed Vigor ◽

Randomized Design ◽

Temperature Regimes ◽

Seedling Length ◽

Physiological Quality ◽

Mean Germination Time ◽

Completely Randomized Design ◽

Understory Plant

Erythroxylum pauferrense is an endemic understory plant species of the Northeast Region of Brazil. The species is of great importance to the region and so ecophysiological studies are needed for its preservation. The objective of the present study was to determine the best substrates and temperatures for testing germination and seed vigor of E. pauferrense. An experiment was performed comprising a completely randomized design in a 5 x 4 factorial scheme, with five temperature regimes (20, 25, 30, 35°C constant and 20-30°C alternating) and four types of substrates (paper, vermiculite, sand and commercial substrate). The following characteristics were evaluated: germination percentage, first germination count, germination speed index, mean germination time, seedling length and dry mass (root and shoot). Paper and vermiculite substrates combined with constant temperatures of 20, 25, 30 and alternated between 20-30°C, provide greater seed germination and vigor while 35°C reduces seed physiological quality.

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Physiological quality of parsley seeds in function of size

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n3supl1p1499 ◽

2021 ◽

Vol 42 (3Supl1) ◽

pp. 1499-1510

Author(s):

Renato Téo de Barros ◽

◽

Cibele Chalita Martins ◽

Tatiane Sanches Jeromini ◽

Givanildo Zildo da Silva ◽

...

Keyword(s):

Seed Size ◽

Dry Weight ◽

Germination Percentage ◽

Randomized Design ◽

Physiological Quality ◽

Completely Randomized Design ◽

Germination Vigor ◽

Selection Of

Parsley seeds are commercialized without classification by size during processing, unlike other crops. This classification procedure allows the standardization of seed size for high precision in sowing, disposal of unwanted material, and selection of high quality seeds. The aim of this study was to verify the effect of seed size on germination, vigor, and yield performance of two parsley cultivars. Seeds from eight lots of parsley of ‘Portuguesa’ and ‘Chacareira’ cultivar were separated into three size classes, represented by the seeds retained in the sieves of 0.84, 1.00 and 1.41mm mesh opening. After classification, seeds were evaluated in the laboratory for water content, germination percentage, first count, and thousand seed weight. In the field, the fresh and dry weight of aerial part and the final number of plants (stand) were evaluated after 78 days of sowing. The experimental design was the completely randomized design in an 8 x 3 factorial scheme (eight lots and three sieve opening) with four replicates, for both cultivars. Data obtained were subjected to analysis of variance and means were compared using Tukey test at 5% probability level. It was concluded that the parsley seeds separated by the 1.41 mm sieves showed higher vigor, and consequently, greater success in stand establishment at the field than those separated by other sieve size. The use of sieves in the classification of parsley seeds helps in obtaining lots with superior physiological quality.

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Pengaruh Berbagai Konsentrasi Atonik Terhadap Pertumbuhan Stek Panili (Vanilla plani

Agrotek ◽

10.30862/agt.v2i4.508 ◽

2018 ◽

Vol 2 (4) ◽

Author(s):

Amelia S. Sarungallo ◽

Bagyono Bagyono ◽

Aris Patiung ◽

Aris Patiung

Keyword(s):

Root Length ◽

Dry Weight ◽

Germination Percentage ◽

Single Node ◽

Growing Media ◽

Root Dry Weight ◽

Randomized Design ◽

Two Factors ◽

Media Types ◽

Completely Randomized Design

This research was aimed to identify the influence of Atonic cencentration to the growth of single-node Vanilla cutting planted at various growing media types. Completely randomized design was used in this research with two factors namely Atonic concentration (500 ppm, 1000 ppm, 1500 ppm, 2000 ppm, dan 2500 ppm) and growing media types (tanah, pasir, tanah + pupuk kandang, tanah + pasir, tanah + pasir + pupuk kandang). The result showed that there were no interaction between Atonic concentration and growing media types to the growth of single-node vanilla cutting. Furthermore, the application of Atonic concentration at 2000 ppm established the best result of root length (12,32 cm) and root dry weight (0,16); while the best result of germination percentage (92,23%) revealed by Atonic concentration of 1500 ppm. Regression analysis of germination percentage showed that the optimal concentration of Atonic was 1842 ppm with R<sup>2</sup> = 60,3%. Mixed media of soil + sand + dung performed the best result in root length, root dry weight and germination percentage.

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Morphometry and Germination of Passovia pyrifolia, Struthanthus marginatus and Phoradendron mucronatum Diaspores

Planta Daninha ◽

10.1590/s0100-83582018360100010 ◽

2018 ◽

Vol 36 (0) ◽

Author(s):

J.M.L. AZEVEDO ◽

C.G.G. SANTOS ◽

C.S. CAIRES ◽

J.C. ARAÚJO NETO ◽

R.C. SOUZA

Keyword(s):

Moisture Content ◽

Germination Rate ◽

Germination Percentage ◽

Percentage Germination ◽

Essential Characteristic ◽

Germination Time ◽

Randomized Design ◽

Different Temperatures ◽

Mean Germination Time ◽

Completely Randomized Design

ABSTRACT: The goal of this work was to characterize morphometrically diaspores from three species of mistletoes (Passovia pyrifolia, Struthanthus marginatus e Phoradendron mucronatum), as well as to study its germination behavior according to temperature and luminosity. In germination tests, the completely randomized design was used, in factor scheme 4 x 2, with 4 replications of 15 diaspores. The factors for the first test were different temperatures and two diaspore conditions (intact and without epicarp). In the second test, factors were different light qualities and two diaspore conditions. The analyzed variables were: germination percentage, germination rate index (GRI) and mean germination time (MGT). Mistletoe’s diaspores present an elliptic shape with viscin layer, an essential characteristic for the dispersion of the species. In addition to this, they present a distinction as for the moisture content when compared to the Loranthaceae and Viscaceae, where the latter presents the highest content. Germination is greater at the alternated temperature of 20-30 oC for P. pyrifolia and P. mucronatum diaspores and 20 oC for S. marginatus. Luminosity interfered in the germination of P. mucronatum and S. marginatus but did not influence P. pyrifolia. The diaspore condition influenced the germination of the three studied species, observing a significant increase in their germination when the epicarp was removed. Temperature and luminosity interfere directly in the GRI and MGT of the three mistletoes species.

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Cost reduction and quality enhancement in passion fruit seedlings using alternative substrate

Semina Ciências Agrárias ◽

10.5433/1679-0359.2021v42n3supl1p1549 ◽

2021 ◽

Vol 42 (3Supl1) ◽

pp. 1549-1566

Author(s):

Luana Nascimento da Silva ◽

◽

Lucas Kennedy Silva Lima ◽

Filipe Silva Aguiar ◽

Onildo Nunes de Jesus ◽

...

Keyword(s):

Growth Parameters ◽

Seedling Emergence ◽

Principal Component ◽

Passion Fruit ◽

Passiflora Edulis ◽

Emergence Period ◽

Fine Coal ◽

Randomized Design ◽

Completely Randomized Design ◽

Substrate Mixtures

Obtaining vigorous, quality seedlings is a complex task because it involves multiple physical, chemical and biological factors, with the substrate being a fundamental of this process. Therefore, this study proposes to evaluate different formulations of substrate mixtures and identify which provides better emergence vigor and shoot and root growth in passion fruit (Passiflora edulis Sims). The experiment was laid out in a completely randomized design consisting of 23 substrates with different proportions of Vivatto® and Osmocote®, washed sand, soil, fine coal, coarse coal, enriched hydrogel and enriched vermiculite, with and without the addition of NPK, which were distributed into four replications of four plants per plot. To enrich the hydrogel and vermiculite, foliar fertilizer was used. Emergence vigor was evaluated throughout the seedling emergence period and seedling growth parameters were observed at 60 days after sowing. The data were subjected to multivariate analysis and the groups formed were subjected to analysis of variance. Based on principal component analysis (PCA), four groups were identified. The group composed only of soil + coarse coal and enriched hydrogel (2:2:1) was considered the best treatment, as it favored most of the vegetative growth and emergence vigor traits. Soil plus sand with the addition of NPK was not recommended to grow passion fruit seedlings in any of the proportions used, as there was no emergence.

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Development and root morphology of passion fruit in different substrates

Revista Colombiana de Ciencias Hortícolas ◽

10.17584/rcch.2018v12i2.7779 ◽

2018 ◽

Vol 12 (2) ◽

pp. 514-520

Author(s):

Karminne Dias do Valle ◽

Laísse Danielle Pereira ◽

Moab Acácio Barbosa ◽

Vanessa Brenda Souza Chaves ◽

Pedro Henrique Magalhães de Souza ◽

...

Keyword(s):

Dry Matter ◽

Passion Fruit ◽

Chicken Manure ◽

Fresh Matter ◽

Passiflora Edulis ◽

Initial Development ◽

Initial Formation ◽

Randomized Design ◽

Completely Randomized Design ◽

Yellow Passion Fruit

Among the factors that contribute to better initial development of plants, it is the substrate used. Therefore, this study aimed to evaluate the effect of substrate in initial formation and morphology of the roots of two species of passion fruits. The analyses were done in the nursery of the Federal University of Goiás (UFG), Regional Jataí, Brazil, with a light interception of 60%. The material used were seeds of yellow passion fruit (Passiflora edulis f. flavicarpa) and the cultivar FB 200 (Flora Brasil), harvested in the UFG experimental field. They were sown in three types of substrates: Soil I (mixture of soil, chicken manure and sand in a ratio of 2:1:1 by volume), soil II (steep bank), and Bioplant®, using for plants perforated bags with a capacity of 1.5 L. The experimental design was a completely randomized design with six treatments, eight replications and four plants per plot. After 30 days of sowing, fresh matter of root, root dry matter and morphology were evaluated. The substrate affected the initial development of yellow passion fruit, obtaining the best results with Bioplant®, showing as promising for the development of all the evaluated characteristics.

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Fruit and Juice Metric Characteristics of Two Yellow Passion Fruit (Passiflora edulis Degener) Genotypes Grown in Southeastern Nigeria

Notulae Scientia Biologicae ◽

10.15835/nsb11310410 ◽

2019 ◽

Vol 11 (3) ◽

pp. 422-428

Author(s):

Okorie O. NDUKWE ◽

Paul K. BAIYERI

Keyword(s):

Poultry Manure ◽

Passion Fruit ◽

Fresh Weight ◽

Southeastern Nigeria ◽

Passiflora Edulis ◽

Combined Application ◽

Randomized Design ◽

Completely Randomized Design ◽

Metric Traits ◽

Yellow Passion Fruit

An investigation was undertaken to determine the fruit and juice metric traits of fresh fruits obtained from two yellow passion fruit genotypes grown in south-eastern Nigeria in two seasons. The passion fruit genotypes (Conventional and KPF-4) received 0, 10, 20, 30, 40 t ha-1 poultry manure (PM) rates in 2014 and 0, 10, 20 t ha-1 PM, 5 t ha-1 PM + 200 kg ha-1 NPK 15:15:15, 10 t ha-1 PM + 200 kg ha-1 NPK and 400 kg ha-1 NPK in 2016. Ten ripe and freshly dropped fruits in 2015 and 2017 were picked and taken to the laboratory. Fruit and juice metric traits (such as fruit length, circumference, pulp weight, juice volume and weight) were measured. Data collected were subjected to analysis of variance following the procedure for split-plot experiment in completely randomized design. KPF-4 significantly (p<0.05) produced longer, wider and heavier fruits than the Conventional in 2015 whereas in 2017 all the fruit metric traits did not significantly (p>0.05) differ between the genotypes. Juice volume (682 ml) and pulp fresh weight (942 g) in 2015 were significantly highest in the Conventional when they received 20 or 40 t ha-1 PM. Application of 10 t ha-1 PM + 200 kg ha-1 NPK in 2016 enhanced the production of highest juice volume (723 ml) and pulp fresh weight (770 g) in the Conventional. Juice percentage and fruit metric traits of yellow passion fruit could be enhanced with the application 20 t ha-1 PM, considering lesser cost of PM procurement, or combined application of 10 t ha-1 PM + 200 kg ha-1 NPK.

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Germination and initial development of Simira gardneriana seedling under water stress and at different temperatures

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v21n5p333-338 ◽

2017 ◽

Vol 21 (5) ◽

pp. 333-338 ◽

Cited By ~ 1

Author(s):

Fabrícia N. de Oliveira ◽

Jessica R. de Oliveira ◽

Salvador B. Torres ◽

Rômulo M. O. de Freitas ◽

Narjara W. Nogueira

Keyword(s):

Water Stress ◽

Water Availability ◽

Dry Weight ◽

Germination Percentage ◽

Initial Development ◽

Randomized Design ◽

Seedling Length ◽

Germination Speed ◽

Different Temperatures ◽

Completely Randomized Design

ABSTRACT The germination of seeds is affected by many factors, including water availability and temperature. This study aimed to evaluate the effects of water stress and different temperatures on germination and initial development of S. gardneriana M. R. Barbosa & Peixoto seedlings. The experiment was carried out in a completely randomized design, in a 7 x 4 factorial scheme, with seven potentials (0; -0.1; -0.2; -0.3; -0.4; -0.5 and - 0.6 MPa) and four temperatures (25, 30, 35 and 20-30 °C), with four replicates of 25 seeds. The analyzed variables were germination, percentage of normal seedlings, germination speed index, seedling length (shoot and root) and dry weight (shoot and root). There is a decrease in the germination and vigor of the seeds as the water potential decreases, being less affected under the temperature of 25 °C and very accelerated at 35 °C. The tolerance of S. gardneriana seed germination to water stress is variable between the temperatures and limiting to the formation of normal seedlings from the potential -0.5 MPa at temperatures of 25 to 30 °C and -0.4 and -0.2 MPa for 20-30 and 35 °C, respectively.

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