Maturação de frutos de Caesalpinia echinata Lam., pau-brasil

Aguiar, Francismar Francisco Alves; Pinto, Marcos Mecca; Tavares, Armando Reis; Kanashiro, Shoey

doi:10.1590/s0100-67622007000100001

Cited by 26 publications

(20 citation statements)

References 6 publications

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“…Seed dry weight when combined with other features was a good indicator of physiological maturity for Torresia acreana (Firmino et al, 1996), for Dalbergia nigra (Martins and Silva, 1997), for Cedrela fissilis (Corvello et al, 1999), for Cnidosculus phyllacanthus for Mimosa caesalpiniifolia by Alves (2005), for Peltophorum dubium by Aquino et al (2006), for Machaerium brasiliense by Guimarães and Barbosa (2007), and for Caesalpinia echinata by Aguiar et al (2007). However, for Barbosa et al (1992) fruit and seed dry biomass of Copaifera langsdorffii were not good indicators of physiological maturity.…”

Section: Resultsmentioning

confidence: 95%

“…Sena and Gariglio (1998) and Germaque et al (2002) reported that color change of fruits is a good indicator to assist in identifying the harvest stage of several species. The criterion of fruit color as an indicator of physiological seed quality was recommended to harvest seeds of Ricinus communis when fruits were brown colored (Silva et al, 2009) as well as for several species as reported by Aquino et al (2006) in Peltophorum dubium, for Machaerium brasiliense by Guimarães and Barbosa (2007), and by Aguiar et al, (2007) for Caesalpinia echinata, when fruits of these species were in transition from green to brown preceding the spontaneous opening.…”

Section: Resultsmentioning

confidence: 99%

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Physiological maturity of seeds and colorimetry of fruits of Jatropha curcas L.

MAtos

2010

Rev. bras. sementes

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-The objective was to relate the coloration of fruits of Jatropha curcas L during the maturation process with morphometric (fruits and seeds) and germinative characteristics (seeds). Fruits were collected at various maturation stages from mast trees located in Eldorado/MS, and six maturation stages were visually classified based on fruit's epicarp color. Epicarp digital colorimetry was used to characterize maturation stages in addition to morphometric variables of length and width of fruits and seeds, as well their water content. For determining the physiological potential it was used germination test, emergence velocity index and first count of germination. Results indicated that seeds of J. curcas should be harvested when fruit epicarp shows a reading equal or smaller than 82, 70 or 65 nm of red, green or blue scales from a digital color analyzer. Seeds of fruits with that colorimetry can be harvested in virtue of the maxim acumululation of dry mass, water content below 38,5% and higher physiological potential.Index terms: maturation stage, germination, refractance, morphometry.RESUMO -O estudo objetivou relacionar a coloração de frutos de Jatropha curcas L. durante o processo de maturação com as características morfométricas (frutos e sementes) e germinativas (sementes). Os frutos foram coletados de matrizes em Eldorado/MS, e visualmente classificados em seis estádios de maturação de acordo com a coloração do epicarpo. Para caracterizar a maturidade fisiológica utilizou-se a colorimetria digital assim como as variáveis morfométricas diâmetro e comprimento, assim como a massa seca e o teor de água de frutos e sementes. Para a determinação do potencial fisiológico utilizou-se o teste de germinação, o índice de velocidade de emergência, e o teste da primeira contagem de germinação. Sementes de J. curcas devem ser colhidas quando a coloração do epicarpo do fruto for igual ou menor que 82, 70 ou 65 nm das escalas vermelha, verde ou azul de um analisador digital de cor. Sementes de frutos com aquela colorimetria podem ser colhidas em virtude do máximo acúmulo de massa seca, teor de água abaixo de 38,5%, e maior potencial fisiológico.Termos para indexação: estádio de maturação, potencial fisiológico, refratância, morfometria.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Physiological maturity of seeds and colorimetry of fruits of Jatropha curcas L.

MAtos

2010

Rev. bras. sementes

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“…The identification of these parameters that characterize the physiological maturity of seeds was used in several species, such as pink-ipe (Gemaque;Davide;Faria, 2002), quaresmeira Dias;Pareira, 2005), thrush (Alves et al, 2005), red oak (Lopes and Soares, 2006), Brazil wood (Aguiar et al, 2007), Surinam cherry (Avila et al, 2009), canafístula (Nakagawa et al, 2010, Indian coral tree (Matheus;Corrêa, 2011), and Starburr (Duarte et al, 2012). ** Significant at 1% of probability by the F test.…”

Section: Grzybowski C R De S Et Almentioning

confidence: 99%

Maturation and germination of Vernonanthura discolor seeds

et al. 2016

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Vernonanthura discolor is a native species with potential for reclamation of degraded lands, and the manufacture of wood panels. This study has aimed to evaluate the process of maturation and germination of Vernonanthura discolor seeds, determining the harvest time, and conducting the germination test. A periodic monitoring of the reproductive development of sources of Vernonanthura discolor was conducted, located in the municipality of Bocaiúva do Sul, PR, Brazil; and starting from the anthesis, weekly collections of seeds were performed to evaluate the percentage of dry matter, germinating power, and vigor, in order to identify the physiological maturity of the seeds. In the germination test, two combinations of four temperatures (20, 30, 20-30 and 30 °C), and two light regimes were tested, seeking to define the best methodology and evaluation dates of the test. It was concluded that the seeds physiological maturity Vernonanthura discolor reached 45 days after the anthesis, when the maximum values of dry weight, germination and vigor are achieved. Germination test may be conducted on blotting paper at 20 or 25 °C with a supply of light, or at 25 °C in the dark, the first count being on the 13th and the last one on the 29th day after seeding.Index terms: Physiological quality; dry matter; seed harvest. RESUMOVassourão-preto é uma espécie nativa com potencial para a recuperação de áreas degradadas e confecção de painéis de madeira. No trabalho, objetivou-se avaliar o processo de maturação e germinação de sementes de vassourão-preto, definindo o ponto de colheita e a condução do teste de germinação. Realizou-se acompanhamento periódico do desenvolvimento reprodutivo de matrizes de vassourão-preto, localizadas no município de Bocaiúva do Sul, PR, Brasil, sendo que, a partir da antese foram realizadas coletas semanais das sementes, avaliando-se a porcentagem de matéria seca, o poder germinativo e o vigor, a fim de identificar o ponto de maturidade fisiológica das sementes. No teste de germinação, foram testadas combinações de quatro temperaturas (20, 30, 20-30 e 30 °C) e dois regimes de luz, procurando-se definir a melhor metodologia e as datas de avaliação do teste. Conclui-se que a maturidade fisiológica das sementes é atingida, aos 45 dias após a antese, quando os máximos valores de massa seca, poder germinativo e vigor são alcançados; o teste de germinação pode ser conduzido sobre papel mata-borrão, a 20 ou 25 °C com fornecimento de luz, ou a 25 °C no escuro, sendo a primeira contagem aos 13 e a última aos 29 dias após a semeadura.Termos para indexação: Qualidade fisiológica; matéria seca; coleta de sementes.

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“…Physiological maturity of fruits is important for determination of the ideal period for harvest, processing, drying, storage and quality control of seeds (AGUIAR et al, 2007). Seed physiological maturity is when seeds reach maximum physiological quality, vigor, germination, size and dry matter weight.…”

Section: Introductionmentioning

confidence: 99%

PHYSIOLOGICAL AND ENZYMATIC CHANGES DURING SEED MATURATION AND GERMINATION OF Luehea divaricata

Schulz

Schneider

Gusatto

et al. 2017

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Luehea divaricata Mart. & Zucc is tree is of great ecological and economic importance. This study investigated the effect of fruit maturation on the germination and vigor of L. divaricata. Fruits were harvested at three maturity stages (unripe or green, brown and open) defined by digital colorimetry and seeds extracted from each stage divided into lots of earliest harvested and stored. Germination test was conducted with four replicates of 25 seeds from each fruit maturity stage in plastic boxes under temperature of 30 ± 2° C. The study was conducted in a 2 x 3 (two lots and three maturity stages) factorial arrangement in a completely randomized design with four replications. Data was submitted to analysis of variance and the means were compared by Tukey at 5%. Germination, germination speed index, average root length and moisture content showed higher values for recently harvested seeds extracted from fruits of all maturity stages compared to stored seeds. LEA protein showed higher activity in seeds from fruits with brown epicarp color of both lots while α-amylase protein activity was higher in the stored seed lot. This shows that better seeds are those that are newly collected fruits and browns.

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Maturação de frutos de Caesalpinia echinata Lam., pau-brasil

Cited by 26 publications

References 6 publications

Physiological maturity of seeds and colorimetry of fruits of Jatropha curcas L.

Physiological maturity of seeds and colorimetry of fruits of Jatropha curcas L.

Maturation and germination of Vernonanthura discolor seeds

PHYSIOLOGICAL AND ENZYMATIC CHANGES DURING SEED MATURATION AND GERMINATION OF Luehea divaricata

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