Viabilidade De Sementes De Pupunha (Bactris Gasipaes Kunth)

Ferreira, Sidney Alberto do Nascimento; Santos, Lenoir Alves dos

doi:10.1590/1809-43921992223307

Cited by 25 publications

(26 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ferreira (2005) por sua vez observou outro comportamento em Manaus no Amazonas, onde a fl oração teve início em pleno período de estiagem, por volta do mês de agosto e prolongou-se até o mês de novembro, o que corrobora com a descrição feita por Lorenzi (2002).…”

Section: Resultsunclassified

“…Tal fato diferencia-se do relatado por Ferreira & Santos (1992) Houve baixo sincronismo para as fenofases de espata floral e floração; seus picos ocorreram, em outubro e novembro, respectivamente (figura 8a). O florescimento assincrônico favorece a distribuição da maturação de frutos durante maior período, no entanto, pode restringir o fluxo gênico entre plantas (Reis et al 1996).…”

Section: Resultsunclassified

See 1 more Smart Citation

Estudo fenológico de Bactris gasipaes Kunth,Euterpe edulis Mart. e Syagrus romanzoffiana (Cham.) Glassman no Vale do Ribeira, SP, Brasil

García

Barbedo

2016

Hoehnea

View full text Add to dashboard Cite

-(Phenology of Bactris gasipaes Kunth, Euterpe edulis Mart. e Syagrus romanzoffiana (Cham.) Glassman in the Vale do Ribeira, São Paulo State, Brazil). Aiming at understanding the biology, life cycle and temporal occurrence of the vegetative and reproductive phases of three palm trees, Bactris gasipaes, Euterpe edulis and Syagrus romanzoffiana, in the Ribeira Valley, São Paulo, we recorded the occurence of their flowering, fruiting, leaf fall and leaf flushing. In our 2-year study we observed 15 individuals of each species and vegetative and reproductive events were registered fortnightly. Two reproductive events were observed and they occurred once a year, however differing in reproductive intensity among species and, in the same species, from one year to another. Ripe fruits were observed for a long period (seven consecutive months) even when both precipitation and temperature were low. Bactris gasipaes showed an average of 147 days from the floral spathe opening to the development of ripe fruit, while for Euterpe edulis this process took 280 days, and 174 days for Syagrus romanzoffiana Keywords: Arecaceae, queen-palm, juçara-palm, peach-palm RESUMO -(Estudo fenológico de Bactris gasipaes Kunth, Euterpe edulis Mart. e Syagrus romanzoffiana (Cham.) Glassman no Vale do Ribeira, SP, Brasil). As informações fenológicas permitem compreender a biologia das espécies, o seu ciclo vital e sua ocorrência temporal. Objetivando avaliar os eventos fenológicos das palmeiras Bactris gasipaes, Euterpe edulis e Syagrus romanzoffiana, no Vale do Ribeira, São Paulo, foram registradas quinzenalmente as fenofases de 15 indivíduos representando cada espécie, durante 24 meses. Dois eventos reprodutivos foram observados, e ocorreram como um evento singular anual, com variações na intensidade reprodutiva entre as espécies e de um ano para outro. A presença de frutos maduros por até sete meses consecutivos, evidenciou-se como uma fenofase duradoura, com disponibilidade inclusive em período com precipitação e temperatura baixas. Em Bactris gasipaes, o processo durou 147 dias desde a abertura da espata floral até o desenvolvimento de frutos maduros, já em Euterpe edulis esse processo demorou 280 dias, enquanto em Syagrus romanzoffiana a duração foi de 174 dias.

show abstract

Section: Resultsunclassified

Estudo fenológico de Bactris gasipaes Kunth,Euterpe edulis Mart. e Syagrus romanzoffiana (Cham.) Glassman no Vale do Ribeira, SP, Brasil

García

Barbedo

2016

Hoehnea

View full text Add to dashboard Cite

show abstract

“…, found that seed moisture content levels of tolerance and lethality for B. gasipaes were 30 and 12%, respectively. Moreover, according to Ferreira and Santos (1992), seed viability of same species is affected by low seed moisture contents, in which under 38%, germination and vigor are rapidly decreased. Also, at or lower than 17% moisture contents the germination was very low.…”

Section: Seeds Of Carpentaria Acuminata Dypsis Decaryi Phoenix Canamentioning

confidence: 99%

Seed desiccation and salinity tolerance of palm species Carpentaria acuminata, Dypsis decaryi, Phoenix canariensis, and Ptychosperma elegans

Batista¹,

Mazzini-Guedes²,

Pivetta³

et al. 2016

Aust J Crop Sci

View full text Add to dashboard Cite

Desiccation-sensitive seeds lose water quickly, what is an important feature to determine their ability to tolerate periods of seasonal drought. Furthermore, excess of soluble salts on seed germination causes a reduction in the substrate water potential. The objective of this study was to assess the desiccation and salinity tolerance of seeds of four ornamental palm species. Different moisture contents were studied for seeds of Carpentaria acuminata, Dypsis decaryi, Phoenix canariensis, and Ptychosperma elegans, while five concentrations of NaCl were tested separately for C. acuminata and P. elegans. Seeds of C. acuminata and P. canariensis tolerated drying at 5% and 8% seed moisture, respectively. On the other hand, seeds of D. decaryi and P. elegans were sensitive to dehydration even at high moisture contents, 20% and 27% of seed moisture, respectively. Increase on salt concentration did not affect germination or germination rate of C. acuminata and P. elegans seeds.

show abstract

“…), areca palm (Chrysalidocarpus lutescens Wendl.) and peach palm (Bactris gasipaes Kunth) (ARAÚJO et al, 1994;BECWAR et al, 1982;BOVI et al, 2004;SANTOS, 1993;MARTINS et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, Ferreira and Santos (1993), in evaluating different drying periods and rates for peach palm (B. gasipaes Kunth), found an interaction between these factors, where slow drying (in a laboratory environment for 8 days) favored emergence and seed vigor, compared with seeds dried in silica gel, which ceased germination in only 4 days when they reached 19% moisture.…”

Section: Introductionmentioning

confidence: 99%

Effect of drying and soaking fruits and seeds on germination of macaw palm (Acrocomia aculeata [Jacq.] Loddiges ex MART.)

et al. 2012

View full text Add to dashboard Cite

ABSTRACT. This study evaluated mechanisms of the dehydration and rehydration of fruits and seeds on the resulting embryo viability of the macaw palm, Acrocomia aculeata (Jacq.) Loddiges ex Mart. Dehydration was performed in a forced-air oven at 37 ± 2°C for 0, 3, 6, 9, 12 or 15 days, and after these periods, the embryo viability was evaluated by the tetrazolium test. The effect of hydration on the germination percentage and velocity index was evaluated by the imbibition of seeds with distilled water in a germinator at 30 ± 2°C for 0, 2, 4, 6, 8 or 10 days. The seeds were then treated with fungicide and maintained in a Mangelsdorf germinator at 30 ± 2°C. Drying caused a progressive water loss in the fruits and facilitated the extraction of the seeds. Fruits subjected to drying for up to nine days had no loss of vigor; however, after dehydration for 15 days, a loss in seed viability was observed. Simple linear regression estimated the seed water content based on the fruit water content. Seed imbibition in distilled water favored an increase in dead by fungally contaminated seeds.Keywords: germination, tetrazolium, drying tolerance.Efeito da secagem e embebição de frutos e sementes na germinação de macaúba (Acrocomia aculeata [Jacq.] Loddiges ex MART.) RESUMO. Objetivou-se com esse estudo elucidar os mecanismos de desidratação e hidratação de frutos e sementes na viabilidade de embriões de macaúba Acrocomia aculeata (Jacq.) Loddiges ex Mart. A desidratação foi realizada em estufa de circulação de ar, ajustada a 37 ± 2°C por 0, 3, 6, 9, 12 e 15 dias, após esses períodos, foi avaliada a viabilidade dos embriões pelo teste de tetrazólio. O efeito da hidratação na porcentagem e velocidade de germinação foi avaliado pela embebição das sementes em água destilada em germinador com temperatura a 30 ± 2°C por 0, 2, 4, 6, 8 e 10 dias. As sementes foram tratadas com fungicida e mantidas em germinador do tipo Mangelsdorf. A secagem promoveu perda pregressiva no conteúdo de água dos frutos e facilitou a extração das sementes. Quando os frutos foram secos por nove dias não há perda de vigor, no entanto, depois de 15 dias de desidratação, foi observado perda na viabilidade das sementes. Com a regressão linear simples é possível estimar o conteúdo de água nas sementes baseando-se no teor de água dos frutos. A embebição das sementes em água destilada favoreceu e aumentou o número de sementes mortas pela contaminação fúngica.Palavras-chave: germinação, tetrazólio, tolerância à dessecação.

show abstract

Viabilidade De Sementes De Pupunha (Bactris Gasipaes Kunth)

Cited by 25 publications

References 0 publications

Estudo fenológico de Bactris gasipaes Kunth,Euterpe edulis Mart. e Syagrus romanzoffiana (Cham.) Glassman no Vale do Ribeira, SP, Brasil

Estudo fenológico de Bactris gasipaes Kunth,Euterpe edulis Mart. e Syagrus romanzoffiana (Cham.) Glassman no Vale do Ribeira, SP, Brasil

Seed desiccation and salinity tolerance of palm species Carpentaria acuminata, Dypsis decaryi, Phoenix canariensis, and Ptychosperma elegans

Effect of drying and soaking fruits and seeds on germination of macaw palm (Acrocomia aculeata [Jacq.] Loddiges ex MART.)

Contact Info

Product

Resources

About