Application of hypergravity in Eucalyptus and Corymbia seeds

Nunes, Andrei Caíque Pires; Santos, Glêison Augusto dos; Santos, Marlise Araújo dos; Russomano, Thais; Santos, Osmarino Pires dos; Valente, Brígida Maria dos Reis Teixeira; Resende, Marcos Deon Vilela de

doi:10.1590/0103-8478cr20170233

Acessibilidade / Reportar erro

Brasil
SciELO.org - Rede SciELO
Blog SciELO em Perspectiva

Abrir menu

Brasil

Español English

Ciência Rural

Submissão de manuscritos
Sobre o periódico
Corpo Editorial
Instruções aos autores
Contato

sumário « anterior atual seguinte »

Resumo (Inglês)
Resumo (Português)

Texto (Inglês)

Download PDF (Inglês)

Compartilhe

Compartilhe
E-mail
Facebook
Twitter
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley

Sumário

Compartilhe
E-mail
Facebook
Twitter
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley

Resumo (Inglês)
Resumo (Português)

Texto (Inglês)

Download PDF (Inglês)

FORESTRY SCIENCE • Cienc. Rural 48 (02) • 2018 • https://doi.org/10.1590/0103-8478cr20170233 copy

Application of hypergravity in Eucalyptus and Corymbia seeds

Aplicação da hipergravidade em sementes de Eucalyptus e Corymbia

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT:

The aim of this study was to evaluate the growth responses of various Eucalyptus and Corymbia species subjected to different intensities of simulated hypergravity relative to the control. A centrifuge was used to simulate hypergravity. It was developed and built at the Centro de Microgravidade of the Pontifícia Universidade Católica do Rio Grande do Sul, Brazil. Seeds of five Eucalyptus and one Corymbia species (E. grandis, Eucalyptus globulus, Eucalyptus benthamii, Eucalyptus saligna, Eucalyptus dunnii, and C. maculata) were placed on moist germination paper in plastic containers and rotated at speeds simulating 5 Gz and 7 Gz for different lengths of time. Hypergravity technology significantly increased seedling production (diameter, height, and survival at 120 days) in nurseries. In E. globulus, the effects of hypergravity were significant at 7 Gz at all lengths of time (from 1 d to 9 days). Effects of hypergravity were significant in both E. benthamii and E. grandis at 7 Gz and 8 h exposure. Therefore, simulated hypergravity could be used in performance tests of Eucalyptus seedlings in early stages of development.

Key words:
rowth increment; forest breeding; simulated-gravity

Authorship

Andrei Caíque Pires Nunes ^*E-mail: andreicaiquep@gmail.com. *Corresponding author.

Departamento de Engenharia Florestal, Universidade Federal de Viçosa (UFV), Avenida Peter Henry Rolfs, s/n, Campus Universitário, Centro, 36570000, Viçosa, MG, Brasil. Universidade Federal de ViçosaBrazilViçosa, MG, BrazilDepartamento de Engenharia Florestal, Universidade Federal de Viçosa (UFV), Avenida Peter Henry Rolfs, s/n, Campus Universitário, Centro, 36570000, Viçosa, MG, Brasil.

Glêison Augusto dos Santos

Marlise Araújo dos Santos

Laboratório de Engenharia Aeroespacial Joan Vernikos, Centro de Microgravidade da Pontifícia, Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brasil.Universidade Católica do Rio Grande do SulBrazilPorto Alegre, RS, BrazilLaboratório de Engenharia Aeroespacial Joan Vernikos, Centro de Microgravidade da Pontifícia, Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS, Brasil.

Thais Russomano

Osmarino Pires dos Santos

CMPC Celulose Riograndense, Rua São Geraldo, Guaíba, RS, Brasil.CMPC Celulose RiograndenseBrasilGuaíba, RS, BrasilCMPC Celulose Riograndense, Rua São Geraldo, Guaíba, RS, Brasil.

Brígida Maria dos Reis Teixeira Valente

CMPC Celulose Riograndense, Rua São Geraldo, Guaíba, RS, Brasil.CMPC Celulose RiograndenseBrasilGuaíba, RS, BrasilCMPC Celulose Riograndense, Rua São Geraldo, Guaíba, RS, Brasil.

Marcos Deon Vilela de Resende

Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Florestas, Estrada da Ribeira, Km 111, Bairro Guaraituba, Colombo, PR, Brasil.Empresa Brasileira de Pesquisa AgropecuáriaBrazilColombo, PR, BrazilEmpresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Florestas, Estrada da Ribeira, Km 111, Bairro Guaraituba, Colombo, PR, Brasil.

E-mail: andreicaiquep@gmail.com. ^*Corresponding author.

SCIMAGO INSTITUTIONS RANKINGS

CMPC Celulose Riograndense, Rua São Geraldo, Guaíba, RS, Brasil.CMPC Celulose RiograndenseBrasilGuaíba, RS, BrasilCMPC Celulose Riograndense, Rua São Geraldo, Guaíba, RS, Brasil.

Tables

Tables (3)

Thumbnail

Table 1
Means and statistical significance of intermittent E. grandis and E. globulus exposures to 7 G for 1, 2, 3, 4, 5, 6, 7, and 9 d (scenario 1) for survival (number of surviving plants derived from 45 seeds), plant height (cm), plant diameter (cm), number of roots (nº roots), root wet weight (WW, g), and root dry weight (DW, g).

Thumbnail

Table 2
Means of the main factors studied for 8 h and 24 h continuous 7 Gz and 5 Gz treatments (scenario 2) and the respective control groups for E. grandis, E. globulus, E. benthamii, E. saligna, C. maculata, and E. dunnii. The variables evaluated in laboratory were aerial shoot height (AP, cm) and root length (root S, cm).

Thumbnail

Table 3
Means of the main factors studied for 8 h and 24 h continuous 7 Gz and 5 Gz treatments (scenario 2) and the respective control groups for E. grandis, E. globulus, E. benthamii, E. saligna, C. maculata and E. dunnii. Variables evaluated in the nursery were: survival (number of surviving plants derived from 45 seeds), plant height (cm), plant diameter (cm), number of roots (nº roots), root wet weight (WW, g), and root dry weight (DW, g).

Table 1 Means and statistical significance of intermittent E. grandis and E. globulus exposures to 7 G for 1, 2, 3, 4, 5, 6, 7, and 9 d (scenario 1) for survival (number of surviving plants derived from 45 seeds), plant height (cm), plant diameter (cm), number of roots (nº roots), root wet weight (WW, g), and root dry weight (DW, g).

Variable	----------------------E. grandis---------------------			--------------------E. globules-----------------
Variable	1Gz^*	7Gz	p-value	1Gz^*	7Gz	p-value
Survival (number of plants)	21.66	24.66	89% ^NS	6.58	10.21	0.0053%^S
Height (cm)	22.62	23.13	33% ^NS	12.53	14.07	0.18%^S
Diameter (cm)	2.55	2.82	24% ^NS	2.33	2.65	0.018%^S
Roots (number)	6.41	6.96	42% ^NS	5.22	6.54	7%^NS
WW (g)	2.41	2.17	26% ^NS	3.32	3.33	98%^NS
DW (g)	0.43	0.42	96% ^NS	0.53	0.64	12%^NS

^*Control; S: effect of 7 G significant at 5% probability level by the F-test; NS: effect of 7 G not significant at 5% probability level by the F-test; The time factor and the interaction between time and G intensity were not significant at the 5% probability level.

Table 2 Means of the main factors studied for 8 h and 24 h continuous 7 Gz and 5 Gz treatments (scenario 2) and the respective control groups for E. grandis, E. globulus, E. benthamii, E. saligna, C. maculata, and E. dunnii. The variables evaluated in laboratory were aerial shoot height (AP, cm) and root length (root S, cm).

Hypergravity intensities and controls	-------------E. saligna----------		----------C. maculata--------		-----------E. benthamii----------
Hypergravity intensities and controls	AP (cm)	Root S (cm)	AP (cm)	Root S (cm)	AP (cm)	Root S (cm)
7 Gz	0.44^a	0.46^b	0.93^b	1.15^c	1.01^a	1.17^a
Control	0.56^a	0.66^a	1.15^b	1.65^b	1.04^a	1.22^a
5 Gz	0.48^a	0.39^b	1.64^a	1.92^b	0.91^b	1.21^a
Control	0.47^a	0.45^b	1.82^a	2.35^a	0.88^b	1.26^a
Hypergravity intensities and controls	------------- E. dunnii ----------		----------- E. globulus --------		------------ E. grandis -----------
Hypergravity intensities and controls	AP (cm)	Root S (cm)	AP (cm)	Root S (cm)	AP (cm)	Root S (cm)
7 G	1.34^a	1.28^a	0.81^ab	1.02^ab	0.74^a	0.78^a
Control	1.25^a	1.40^a	0.94^a	1.37^a	0.84^a	0.85^a
5 G	1.31^a	1.19^a	0.80^ab	1.10^ab	0.77^a	0.64^b
Control	1.20^a	1.33^a	0.58^b	0.76^b	0.79^a	0.77^ab

Means for each species and variable followed by the same vertical letters do not significantly differ according to Duncan’s test at a 5% probability level. The main effect of time and the interaction between time and Gz intensity were not significant according to the ANOVA F-test.

Table 3 Means of the main factors studied for 8 h and 24 h continuous 7 Gz and 5 Gz treatments (scenario 2) and the respective control groups for E. grandis, E. globulus, E. benthamii, E. saligna, C. maculata and E. dunnii. Variables evaluated in the nursery were: survival (number of surviving plants derived from 45 seeds), plant height (cm), plant diameter (cm), number of roots (nº roots), root wet weight (WW, g), and root dry weight (DW, g).

Hypergravity intensities and controls	----------------------------------------------------------------E. saligna ----------------------------------------------------------------
	Survival (number)	Height (cm)		Diameter (cm)	Roots (number)	WW (cm)	DW (cm)
7 G	0.83^b	18.05^b		2.52^a	6.66^b	2.08^b	0.36^a
Control	0.66^b	16.95^b		2.33^a	6.33^b	1.64^b	0.40^a
5 G	3.16^b	20.5^a		2.56^b	8.66^a	2.80^a	0.37^a
Control	6.5^a	21.5^a		2.38^b	10.08^a	2.81^a	0.34^a
	---------------------------------------------------------------- C. maculata ----------------------------------------------------------------
	Survival (number)	Height (cm)		Diameter (cm)	Roots (number)	WW (cm)	DW (cm)
7 G	10.83^b	20.37^a		2.77^a	5.0^a	3.34^a	0.64^a
Control	10.83^b	21.04^a		2.69^a	3.0^ab	1.71^a	0.35^a
5 G	17.16^a	18^b		2.70^a	2.0^ab	2.00^a	0.42^a
Control	16.33^a	17^b		2.60^a	2.67^b	2.27^a	0.53^a
	---------------------------------------------------------------- E. benthamii ----------------------------------------------------------------
	Survival (number)	Height (cm)		Diameter^** (cm)	Roots (number)	WW (cm)	DW (cm)
7 G	13.83^a	20.91^a		2.63^a	5.16^b	2.43^a	0.41^a
Control	11.66^a	19.29^a		2.28^b	4.33^b	1.92^b	0.33^a
5 G	8.33^b	20.91^a		2.36^b	6.5^a	2.38^a	0.37^a
Control	2.33^b	19.29^a		2.42^b	7.5^a	2.57^a	0.28^a
	---------------------------------------------------------------- E. dunnii ---------------------------------------------------------------------
	Survival (number)	Height (cm)		Diameter (cm)	Roots (number)	WW (cm)	DW (cm)
7 G	7^b	17.25^a		2.46^a	9.83^a	2.77^a	0.37^a
Control	5^b	15.62^a		2.38^a	9.00^a	2.90^a	0.43^a
5 G	22.33^a	17.87^a		2.45^a	6.66^a	2.17^a	0.29^a
Control	19.33^a	18.91^a		2.43^a	7.58^a	3.00^a	0.35^a
	--------------------------------------------------------------- E. globulus ------------------------------------------------------------------
	Survival (number)	Height (cm)	Diameter (cm)		Roots (number)	WW (cm)	DW (cm)
7 G	1.16^b	-	-		-	-	-
Control	0.16^b	-	-		-	-	-
5 G	9.5^a	-	-		-	-	-
Control	6.66^a	-	-		-	-	-
	----------------------------------------------------------------- E. grandis ---------------------------------------------------------------------
	Survival^* (number)	Height (cm)		Diameter (cm)	Roots (number)	WW (cm)	DW (cm)
7 G	16.66^a	24.20^a		2.64^a	3.16^b	3.46^a	0.53^a
5 G	10.16^c	19.33^b		2.42^b	8.16^a	2.09^a	0.31^a
Control	11.83^c	24.33^a		2.38^b	8.33^a	2.28^a	0.35^a

Means followed by the same vertical letters do not significantly differ by Duncan’s test at a 5% probability level. - death of the plant; ^*Significant effects of 7 G (individual) and time (individual) (P = 0.001%). Plant survival rates were highest when seeds exposed to hypergravity for 24 h. No interaction was reported between gravity intensity and exposure time; ^**Significant effect of 7 G (individual). Effect of time (individual) not significant (p = 70%). No interaction wasreported between gravity intensity and exposure time.

How to cite

copy

Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

Application of hypergravity in Eucalyptus and Corymbia seeds

PlumX

Mensagem

[1] E-mail: andreicaiquep@gmail.com. ^*Corresponding author.