Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge

Detailed knowledge on the factors influencing the production of minicuttings, especially focusing on management and environmental optimization is important. Therefore, this study aimed at evaluating the influence of temperature, relative humidity and PAR (photosynthetically active radiation) and the...

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Autores principales:	Pereira Pires,Patrícia, Wendling,Ivar, de Souza,Anderson Marcos, Siqueira Guedes Coelho,Alexandre
Lenguaje:	English
Publicado:	Universidad Austral de Chile, Facultad de Ciencias Forestales 2017
Materias:	cloning subtropical Eucalyptus photosynthetically active radiation minicutting
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002017000300006
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spelling	oai:scielo:S0717-920020170003000062018-03-01Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedgePereira Pires,PatríciaWendling,Ivarde Souza,Anderson MarcosSiqueira Guedes Coelho,Alexandre cloning subtropical Eucalyptus photosynthetically active radiation minicutting Detailed knowledge on the factors influencing the production of minicuttings, especially focusing on management and environmental optimization is important. Therefore, this study aimed at evaluating the influence of temperature, relative humidity and PAR (photosynthetically active radiation) and their oscillations in mini-clonal hedges of three E. benthamii x E. dunnii hybrid clones regarding survival, vigor and productive capacity of ministumps. A mini-clonal hedge with a semi-hydroponic system was formed, with five replicates of five ministumps per clone, submitted to 41 successive collections of minicuttings during one year. A multiple linear regression model for minicutting production was adjusted according to maximum, average and minimum climatic variables, considering a period from 0 until 16 weeks before collection. Ministumps from three clones showed 100 % survival throughout the year. Clone 1 showed higher production (8,000 minicuttings m-2 month-1) and clone 3 showed the lowest values for this variable (less than 5,000 minicuttings m-2 month-1). The adjusted multiple linear regression model was formed by the maximum PAR, maximum humidity and temperature range of different weeks before collection. Maximum PAR (1,440-1,600 µmol m-2 s-1) was the most influential variable in the adjusted model and positively related to minicutting productivity. Based on ideal climatic values found by the regression model, it is possible to suggest that climatic oscillations do not favor ministump development.info:eu-repo/semantics/openAccessUniversidad Austral de Chile, Facultad de Ciencias ForestalesBosque (Valdivia) v.38 n.3 20172017-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002017000300006en10.4067/S0717-92002017000300006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	cloning subtropical Eucalyptus photosynthetically active radiation minicutting
spellingShingle	cloning subtropical Eucalyptus photosynthetically active radiation minicutting Pereira Pires,Patrícia Wendling,Ivar de Souza,Anderson Marcos Siqueira Guedes Coelho,Alexandre Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge
description	Detailed knowledge on the factors influencing the production of minicuttings, especially focusing on management and environmental optimization is important. Therefore, this study aimed at evaluating the influence of temperature, relative humidity and PAR (photosynthetically active radiation) and their oscillations in mini-clonal hedges of three E. benthamii x E. dunnii hybrid clones regarding survival, vigor and productive capacity of ministumps. A mini-clonal hedge with a semi-hydroponic system was formed, with five replicates of five ministumps per clone, submitted to 41 successive collections of minicuttings during one year. A multiple linear regression model for minicutting production was adjusted according to maximum, average and minimum climatic variables, considering a period from 0 until 16 weeks before collection. Ministumps from three clones showed 100 % survival throughout the year. Clone 1 showed higher production (8,000 minicuttings m-2 month-1) and clone 3 showed the lowest values for this variable (less than 5,000 minicuttings m-2 month-1). The adjusted multiple linear regression model was formed by the maximum PAR, maximum humidity and temperature range of different weeks before collection. Maximum PAR (1,440-1,600 µmol m-2 s-1) was the most influential variable in the adjusted model and positively related to minicutting productivity. Based on ideal climatic values found by the regression model, it is possible to suggest that climatic oscillations do not favor ministump development.
author	Pereira Pires,Patrícia Wendling,Ivar de Souza,Anderson Marcos Siqueira Guedes Coelho,Alexandre
author_facet	Pereira Pires,Patrícia Wendling,Ivar de Souza,Anderson Marcos Siqueira Guedes Coelho,Alexandre
author_sort	Pereira Pires,Patrícia
title	Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge
title_short	Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge
title_full	Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge
title_fullStr	Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge
title_full_unstemmed	Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge
title_sort	climatic oscillations in the production of eucalyptus benthamii x e. dunnii shoots in mini-clonal hedge
publisher	Universidad Austral de Chile, Facultad de Ciencias Forestales
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-92002017000300006
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Climatic oscillations in the production of Eucalyptus benthamii x E. dunnii shoots in mini-clonal hedge

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