Temperatura, escarificação mecânica e substrato na germinação de sementes das palmeiras juçara e açaí

Beckmann-Cavalcante, Márkilla Zunete; Pivetta, Káthia Fernandes Lopes; Iha, Liriane Laguardia; Takane, Roberto Jun

doi:10.5039/agraria.v7i4a1684

Cited by 9 publications

(9 citation statements)

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“…Tavares et al (2008) reported a very low GSI value (0.15), which may be related to the genotype used. Cavalcante et al (2012) observed a GSI of 1.6, which is lower than the values identified for genotypes AL1P02 and MI1P01 and close to the value for genotype GU1P06, which exhibited good performance in terms of all the characteristics.…”

Section: Resultsmentioning

confidence: 47%

“…The elevated population variability indicates that the genotypes exhibited high, average and low performance for the evaluated characteristics, and the ones with the best performance are targets for selection. The genotypes with high performance in terms of GP presented very high values, considering the higher values reported in the literature are approximately 70 and 80% (Tavares et al, 2008;Cavalcante et al, 2012).…”

Section: Resultsmentioning

confidence: 75%

“…Euterpe edulis is considered one of the most important palm trees in Brazil and the one producing the best-flavored edible fruits (Cavalcante, Pivetta, Iha, & Takane, 2012). However, the intense exploitation of heart of palm, which is associated with deforestation, and the fact that E. edulis does not produce tillers have reduced its populations, endangering this species (Ganem, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The search for E. edulis seeds for commercial purposes, as an ornamental plant and for the forest regeneration has increased, which generates a need for technologies that are favorable to the production, quality and conservation of these seeds (Martins, Bovi, Nakagawa, & Machado, 2009) since palm tree propagation mainly happens through seeds (Cavalcante et al, 2012). Nevertheless, E. edulis seed germination has a low percentage and is considered slow and ununiform (Tavares, Ramos, Aguiar, & Kanashiro, 2008;Cavalcante et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Euterpe edulis seed germination parameters and genotype selection

et al. 2019

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The palm tree juçara (Euterpe edulis Mart) is considered one of the most important and threatened native species in the Atlantic Forest. The search for juçara seeds (Euterpe edulis Martius) has increased, generating a need for technologies favorable to their production, quality and conservation. The aim of this study was to describe the seed germination patterns of 45 juçara accessions by using a nonlinear model to examine the behavior of these patterns and select superior genotypes. After clustering 45 juçara accessions into four groups, four nonlinear models, namely, the logistic, Gompertz, von Bertalanffy and Weibull models, were tested based on their fit for each group of accessions. The Gompertz model presented the best fit to describe the germination growth curve of E. edulis seeds. Groups 3 and 4 presented the highest daily germination rates and were considered the most vigorous. Analysis of deviance was performed, revealing genetic variability among the genotypes in terms of seed germination and vigor. It was possible to find a nonlinear model that best explained our data, and this model may also be a promising model for other palm tree species. It is possible to select genotypes based on the characters we analyzed, due to the elevated genetic variability.

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Section: Resultsmentioning

confidence: 47%

Section: Resultsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Euterpe edulis seed germination parameters and genotype selection

et al. 2019

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“…Beckmann-Cavalcante et al (2012) recommended the substrates sand, vermiculite and coir dust to seed germination of palms Euterpe edulis and Euterpe oleraceae and reported that all of similarly efficient.…”

Section: Resultsmentioning

confidence: 99%

Biometry of fruits and seeds, seeds germination and post-seminal development of areca palm

Pêgo

Grossi²

2016

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Areca palm (Dypsis lutescens) is an ornamental palm largely used in landscape which propagate occur by seeds germination. However, the biometry and the endogenous and exogenous factors than can limit propagation of this plant are poorly known. Thus, this study aimed to characterize the biometric fruits and seeds of areca palm and to evaluate the seed germination after the dormancy breaking treatments in different substrates. For this, the biometric analysis of length, diameter and weight were recorded; the description of internal and external morphology of fruit and seed were also studied. The treatments to improvement of seed germination were control (T1); immersion of seeds in water a solution of 500 mg L -1 GA 3 (T2), mechanical scarification with sandpaper (T3) and combination of mechanical scarification followed of immersion in 500 mg L -1 GA 3 (T4). The seeds were sown in containers containing sand, coir dust or vermiculite in all possible combinations. The areca palm fruits and seeds are both, elliptical shape and the weight of fruits and seeds is 1.70 g and 1.04 g, respectively. There is positive correlation between fruit weight and length and diameter of the fruit and just like the diameter has a positive correlation with the diameter of the seed. The mechanical scarification improve the seed germination. The Coir dust is the most appropriate substrate to seed germination of areca palm. The seed germination of Areca palm is hypogeal and the protrusion of the haustorium was observed at 59 days after sowing and the plantlets is fully grown at 153 after sowing. Keywords: Areca Palm, Dypsis lutescens, seedling, morphology. RESUMO Biometria de frutos e sementes, dormência e substratos na germinação de sementes de germinação Dypsis lutescensPalmeira areca (Dypsis lutescens) é uma palmeira ornamental amplamente utilizada no paisagismo que se propaga principalmente por sementes. No entanto, a biometria e os fatores endógenos e exógenos que podem limitar a propagação desta planta são pouco conhecidos. Assim, este trabalho teve como objetivo caracterizar a biometria de frutos e sementes de palmeira areca e avaliar a germinação de sementes após tratamentos de superação de dormência e em diferentes substratos. Para isso, as análises biométricas de comprimento, diâmetro e peso foram registradas; a descrição da morfologia externa e interna de frutos e sementes também foram estudados. Os tratamentos para superação de dormência foram: controle (T1), imersão das sementes em solução de 500 mg L -1 de GA 3 (T2), escarificação mecânica com lixa (T3) e combinação de escarificação mecânica após imersão em 500 mg L -1 de GA 3 (T4). Para cada tratamento de superação de dormência foram testados areia, pó de coco ou vermiculita. Os frutos e sementes de palmeira areca são elípticos o peso dos frutos e sementes são de 1,70 g e 1,0 4 g respectivamente. Há correlação positiva entre o peso do fruto e comprimento e diâmetro do fruto assim como o diâmetro do fruto também tem correlação positiva com o diâmetro da semente. A esca...

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Euterpe edulis (assai palm)

2019

CABI Compendium

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Temperatura, escarificação mecânica e substrato na germinação de sementes das palmeiras juçara e açaí

Cited by 9 publications

References 10 publications

Euterpe edulis seed germination parameters and genotype selection

Euterpe edulis seed germination parameters and genotype selection

Biometry of fruits and seeds, seeds germination and post-seminal development of areca palm

Euterpe edulis (assai palm)

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