Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)

Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)

Seed germination of Cecropia pachystachya Trec. was investigated at 25, 30, and 35ºC using fluorescent day lights. Ten replicates each of 200 seeds were used in each thermal treatment. Germitest® paper, CEL-065®, and 11x11x5 cm Gerbox® were also used. The frequencies of radicle protrusions were counted at consecutive two hour intervals. The cumulative frequencies were combined with the distribution of Weibull using the following model: Y = M (1 - exp (-(t/b)c)). The best performance was achieved with the temperature of 30ºC ( M, 95.29%). Time to achieve 60.23% of seed germination (0.6321 x 95.29%) was 99.35 h with a spread of 7.19. All model/data set combinations had close to linear.

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Main Authors: Pilati,Rosemari, Andrian,Izabel de Fátima, Carneiro,José W. P.
Format: Digital revista
Language:English
Published: Instituto de Tecnologia do Paraná - Tecpar 1999
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200010
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spelling oai:scielo:S1516-891319990002000102011-05-26Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)Pilati,RosemariAndrian,Izabel de FátimaCarneiro,José W. P. Cecropia pachystachya seed germination Weibull function Seed germination of Cecropia pachystachya Trec. was investigated at 25, 30, and 35ºC using fluorescent day lights. Ten replicates each of 200 seeds were used in each thermal treatment. Germitest® paper, CEL-065®, and 11x11x5 cm Gerbox® were also used. The frequencies of radicle protrusions were counted at consecutive two hour intervals. The cumulative frequencies were combined with the distribution of Weibull using the following model: Y = M (1 - exp (-(t/b)c)). The best performance was achieved with the temperature of 30ºC ( M, 95.29%). Time to achieve 60.23% of seed germination (0.6321 x 95.29%) was 99.35 h with a spread of 7.19. All model/data set combinations had close to linear.info:eu-repo/semantics/openAccessInstituto de Tecnologia do Paraná - TecparBrazilian Archives of Biology and Technology v.42 n.2 19991999-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200010en10.1590/S1516-89131999000200010
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Pilati,Rosemari
Andrian,Izabel de Fátima
Carneiro,José W. P.
spellingShingle Pilati,Rosemari
Andrian,Izabel de Fátima
Carneiro,José W. P.
Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)
author_facet Pilati,Rosemari
Andrian,Izabel de Fátima
Carneiro,José W. P.
author_sort Pilati,Rosemari
title Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)
title_short Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)
title_full Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)
title_fullStr Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)
title_full_unstemmed Effects of different temperatures on the performance of seeds germination of Cecropia pachystachya Trec. (Cecropiaceae)
title_sort effects of different temperatures on the performance of seeds germination of cecropia pachystachya trec. (cecropiaceae)
description Seed germination of Cecropia pachystachya Trec. was investigated at 25, 30, and 35ºC using fluorescent day lights. Ten replicates each of 200 seeds were used in each thermal treatment. Germitest® paper, CEL-065®, and 11x11x5 cm Gerbox® were also used. The frequencies of radicle protrusions were counted at consecutive two hour intervals. The cumulative frequencies were combined with the distribution of Weibull using the following model: Y = M (1 - exp (-(t/b)c)). The best performance was achieved with the temperature of 30ºC ( M, 95.29%). Time to achieve 60.23% of seed germination (0.6321 x 95.29%) was 99.35 h with a spread of 7.19. All model/data set combinations had close to linear.
publisher Instituto de Tecnologia do Paraná - Tecpar
publishDate 1999
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200010
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AT andrianizabeldefatima effectsofdifferenttemperaturesontheperformanceofseedsgerminationofcecropiapachystachyatreccecropiaceae
AT carneirojosewp effectsofdifferenttemperaturesontheperformanceofseedsgerminationofcecropiapachystachyatreccecropiaceae
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