Critérios morfológicos e temperatura para avaliação da germinação das sementes de cupuaçu

Ferraz, Isolde Dorothea Kossmann; Albuquerque, Maria Cristina de Figueiredo e; Calvi, Geângelo Petene; Farias, Derick de Lima

doi:10.1590/s0100-29452012000300033

Cited by 9 publications

(9 citation statements)

References 5 publications

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“…The counting date was established based on the criterion of 50% of seed germination in most treatments (Brasil, 2009;Ferraz et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

“…The temperature of 25 ºC is ideal for the germination of seeds of S. sessiliflorum, Copaifera langsdorffii Desf. and Anadenanthera colubrina (Vellozo) Brenan (Lopes & Pereira, 2005;Brasil, 2013), while 30 ºC is ideal for A. nitens, Theobroma grandiflorum (Wild ex Spreng Schum) and Genipa americana L. (Varela et al, 2005;Ferraz et al, 2012;Brasil, 2013), because they allow maximum germination in the shortest period of time.…”

Section: Introductionmentioning

confidence: 99%

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Temperature and substrate on Plukenetia volubilis L. seed germination

Silva

Vieira

Boneti

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this work was to evaluate the effect of temperature and substrate on the germination of P. volubilis seeds. Seeds harvested from 25 matrix plants were submitted, in two studies, to conditions of (i) sowing in rolled paper towel at the temperatures of 10, 15, 20, 25, 30, 35, 40, and 45 °C, for the evaluation of germination, first count of germination, germination speed index and mean time for germination, and (ii) sowing in the substrates paper towel, sand, Bioplant®, Bioplant® and micron, superfine, fine, medium and coarse vermiculite. The same evaluations mentioned in the first study were conducted at the temperature of 30 o C, as well as plant growth. The treatment replicates were distributed in a completely randomized block design and the effects of temperature were compared by polynomial regression analysis. The substrates were compared by the Scott-Knott test at 0.05 probability level. The data show that the ideal range of temperature for the germination of P. volubilis is between 25 and 30 °C. The temperature of 20 °C is the minimum for germination and those above 35 °C are lethal to these seeds. The most favorable substrate for P. volubilis seed germination is micron or fine vermiculite.Temperatura e substrato na germinação de sementes de Plukenetia volubilis L. R E S U M OObjetivou-se, neste trabalho, avaliar o efeito de temperaturas e substratos na germinação de sementes de P. volubilis. Sementes colhidas em 25 plantas matrizes foram avaliadas em dois estudos: (i) semeadura em rolo de papel nas temperaturas 10, 15, 20, 25, 30, 35, 40 e 45 ºC, avaliando-se a germinação, primeira contagem, índice de velocidade de germinação e tempo médio de germinação; e (ii) semeadura nos substratos rolo de papel, entre areia, entre Basaplant®, entre Bioplant® e entre vermiculita mícron, superfina, fina, média e grossa; conduzindo-se a 30 ºC os mesmos testes descritos no primeiro estudo e também o crescimento de plântulas. Os dados foram analisados em delineamento inteiramente casualizado com análise de regressão polinomial para a avaliação das temperaturas. Para a comparação entre os substratos utilizou-se o teste de Scott Knott, a 0,05 de probabilidade. Conclui-se que a germinação de sementes de P. volubilis deve ser conduzida nas temperaturas de 25 a 30 o C. A temperatura de 20 o C é a mínima para a germinação e as acima de 35 o C são letais para essas sementes. O substrato mais favorável à germinação de sementes de P. volubilis é a vermiculita mícron ou fina.

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“…The counting date was established based on the criterion of 50% of seed germination in most treatments (Brasil, 2009;Ferraz et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature and substrate on Plukenetia volubilis L. seed germination

Silva

Vieira

Boneti

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…Existing methods to test seed viability include X-ray analysis [8][9][10], tetrazolium staining [11][12][13][14][15], a cut test [16][17][18], in some cases the careful extraction and sterile culture of zygotic embryos under aseptic in vitro conditions [10,19], but germination tests http://dx.doi.org/10.1016/j.jphotobiol.2015.02.015 1011-1344/Ó 2015 Elsevier B.V. All rights reserved. [11,20,21] are probably the most widely used.…”

Section: Introductionmentioning

confidence: 99%

“…[11,20,21] are probably the most widely used. Each method has advantages and disadvantages and consequently no single method provides a definitive means of accurately quantifying seed viability.…”

Section: Introductionmentioning

confidence: 99%

Using hyperspectral imaging to determine germination of native Australian plant seeds

Nansen

Zhao

Dakin

et al. 2015

Journal of Photochemistry and Photobiology B: Biology

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a b s t r a c tWe investigated the ability to accurately and non-destructively determine the germination of three native Australian tree species, Acacia cowleana Tate (Fabaceae), Banksia prionotes L.F. (Proteaceae), and Corymbia calophylla (Lindl.) K.D. Hill & L.A.S. Johnson (Myrtaceae) based on hyperspectral imaging data. While similar studies have been conducted on agricultural and horticultural seeds, we are unaware of any published studies involving reflectance-based assessments of the germination of tree seeds. Hyperspectral imaging data (110 narrow spectral bands from 423.6 nm to 878.9 nm) were acquired of individual seeds after 0, 1, 2, 5, 10, 20, 30, and 50 days of standardized rapid ageing. At each time point, seeds were subjected to hyperspectral imaging to obtain reflectance profiles from individual seeds. A standard germination test was performed, and we predicted that loss of germination was associated with a significant change in seed coat reflectance profiles. Forward linear discriminant analysis (LDA) was used to select the 10 spectral bands with the highest contribution to classifications of the three species. In all species, germination decreased from over 90% to below 20% in about 10-30 days of experimental ageing. P 50 values (equal to 50% germination) for each species were 19.3 (A. cowleana), 7.0 (B. prionotes) and 22.9 (C. calophylla) days. Based on independent validation of classifications of hyperspectral imaging data, we found that germination of Acacia and Corymbia seeds could be classified with over 85% accuracy, while it was about 80% for Banksia seeds. The selected spectral bands in each LDA-based classification were located near known pigment peaks involved in photosynthesis and/or near spectral bands used in published indices to predict chlorophyll or nitrogen content in leaves. The results suggested that seed germination may be successfully classified (predicted) based on reflectance in narrow spectral bands associated with the primary metabolism function and performance of plants.

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“…In other tropical fruit-bearing plants, higher emergence speed indexes have been obtained in high temperature conditions, as observed by Zucareli et al (2015) in a wild species of passion fruits (Passiflora incarnata L.) and by Ferraz et al (2012) in cupuaçu [Thebroma grandiflorum (Wild. ex.…”

Section: Resultsmentioning

confidence: 95%

Effect of temperature on passion fruit emergence and seedling vigor

et al. 2017

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-Seedlings for commercial growing of passion fruit are preferentially acquired through seeds. Success in germination and seedling emergence, in turn, is influenced by the genetic constitution of the progenies and the thermal conditions imposed on the growth environment. The aim of this study was to evaluate the emergence and vigor of seedlings of passion fruit cultivars exposed to different temperatures. The experiment was conducted in a germination chamber at the Unidade de Ensino, Pesquisa e Extensão / Pomar Campus of the Department of Plant Science of the Universidade Federal de Viçosa (UFV). The study was carried out in 5 × 3 factorial arrangement, with five temperature ranges (5-15, 10-20, 15-25, 20-30 and 25-35 °C) and three varieties of passion fruit (BRS Sol do Cerrado, BRS Gigante Amarelo and FB-200 Yellow Master) in a completely randomized design with six replications of 25 seeds per plot. The variables analyzed were the percentage, the speed index, and the average time of emergence, shoot length, total length, and seedling dry matter. The cultivars BRS Sol do Cerrado and BRS Gigante Amarelo exhibited seedling emergence of over 95% in the temperature ranges of 20-30 °C and 25-35 °C. Alternating temperatures from 20-30 °C stimulates seedling emergence, seedling growth, and greater accumulation of seedling dry matter.Index terms: Passiflora edulis Sims, cultivars, seeds, thermal conditions. Emergência e vigor de plântulas de maracujazeiro azedo em função da temperatura RESUMO -A propagação de plantas de maracujazeiro azedo, em plantios comerciais, é realizada preferencialmente por meio de sementes. O sucesso da germinação e emergência de plântulas, por sua vez, é influenciado pela constituição genéticas das progênies e pelas condições térmicas impostas no ambiente. O objetivo neste trabalho foi avaliar a emergência e o vigor de plântulas de cultivares de maracujazeiro azedo sob exposição de diferentes temperaturas. O experimento foi conduzido em câmara de germinação na Unidade de Ensino, Pesquisa e Extensão/Pomar Campus pertencente ao Departamento de Fitotecnia da UFV. O trabalho foi desenvolvido em esquema fatorial 5 × 3, com cinco faixas de temperatura (5-15; 10-20; 15-25; 20-30 e 25-35 °C) e três cultivares de maracujazeiro azedo (BRS Sol do Cerrado, BRS Gigante Amarelo e FB-200 Yellow Master) no delineamento inteiramente casualizado e seis repetições de 25 sementes por parcela. As variáveis analisadas foram as percentagem, índice de velocidade e tempo médio de emergência, o comprimento da parte aérea e total e massa seca de plântula. As cultivares BRS Sol do Cerrado e BRS Gigante Amarelo apresentaram emergência de plântulas acima de 95% nas faixas de temperaturas de 20-30 °C e 25-35 °C. Temperaturas alternadas 20-30 °C estimulam a emergência, o crescimento e maior acúmulo de massa seca das plântulas.

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Critérios morfológicos e temperatura para avaliação da germinação das sementes de cupuaçu

Cited by 9 publications

References 5 publications

Temperature and substrate on Plukenetia volubilis L. seed germination

Temperature and substrate on Plukenetia volubilis L. seed germination

Using hyperspectral imaging to determine germination of native Australian plant seeds

Effect of temperature on passion fruit emergence and seedling vigor

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