INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.]
ABSTRACT The utilization of physical protectors has been considered an efficient technique for direct sowing of different species, mainly native ones. Based on the importance of the species Peltophorum dubium for revegetation of degraded areas, tree planting and landscapin...
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Universidade Federal de Santa Maria
2016-01-01
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doaj-a4fdc9c64b3642139d14f59cea30b0262020-11-25T00:03:27ZporUniversidade Federal de Santa MariaCiência Florestal0103-99541980-50982016-01-01263797809INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.]Jeferson KleinLeandro RampimDébora KestringVandeir Francisco GuimarãesJoão Domingos RodriguesABSTRACT The utilization of physical protectors has been considered an efficient technique for direct sowing of different species, mainly native ones. Based on the importance of the species Peltophorum dubium for revegetation of degraded areas, tree planting and landscaping, this study evaluated gas exchanges in canafistula seedlings under the influence of physical protectors subjected to different luminosity rates. The experiment was carried out in pots a Dystropheric Red Latosol, a typical soil of the study region. Seedlings of Peltophorum dubium were evaluated at 30, 50, 70, 90, 110, and 130 days after sowing (DAS). Thus, the following treatments were adopted: T1, absence of physical protector (APP); T2, transparent physical protector (TPP); T3, transparent physical protector + blue cellophane (BPP) and T4, transparent physical protector + red cellophane (RPP). The evaluated characteristics were: stomatal conductance, transpiration, CO 2 assimilation, CO 2 concentration inside the substomatal chamber and water use efficiency. In general, all types of physical protectors led to higher mean values of gas exchanges during their permanence in the sowing site until 70 DAS, except for CO 2 assimilation. However, water use efficiency was higher in APP seedlings at the same period.http://www.redalyc.org/articulo.oa?id=53447685010 |
collection |
DOAJ |
language |
Portuguese |
format |
Article |
sources |
DOAJ |
author |
Jeferson Klein Leandro Rampim Débora Kestring Vandeir Francisco Guimarães João Domingos Rodrigues |
spellingShingle |
Jeferson Klein Leandro Rampim Débora Kestring Vandeir Francisco Guimarães João Domingos Rodrigues INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.] Ciência Florestal |
author_facet |
Jeferson Klein Leandro Rampim Débora Kestring Vandeir Francisco Guimarães João Domingos Rodrigues |
author_sort |
Jeferson Klein |
title |
INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.] |
title_short |
INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.] |
title_full |
INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.] |
title_fullStr |
INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.] |
title_full_unstemmed |
INFLUÊNCIA DE PROTETORES FÍSICOS COLORIDOS NAS TROCAS GASOSAS EM MUDAS DE CANAFÍSTULA [ Peltophorum dubium (Spreng.) Taub.] |
title_sort |
influência de protetores físicos coloridos nas trocas gasosas em mudas de canafístula [ peltophorum dubium (spreng.) taub.] |
publisher |
Universidade Federal de Santa Maria |
series |
Ciência Florestal |
issn |
0103-9954 1980-5098 |
publishDate |
2016-01-01 |
description |
ABSTRACT The utilization of physical protectors has been considered an efficient technique for direct sowing of different species, mainly native ones. Based on the importance of the species Peltophorum dubium for revegetation of degraded areas, tree planting and landscaping, this study evaluated gas exchanges in canafistula seedlings under the influence of physical protectors subjected to different luminosity rates. The experiment was carried out in pots a Dystropheric Red Latosol, a typical soil of the study region. Seedlings of Peltophorum dubium were evaluated at 30, 50, 70, 90, 110, and 130 days after sowing (DAS). Thus, the following treatments were adopted: T1, absence of physical protector (APP); T2, transparent physical protector (TPP); T3, transparent physical protector + blue cellophane (BPP) and T4, transparent physical protector + red cellophane (RPP). The evaluated characteristics were: stomatal conductance, transpiration, CO 2 assimilation, CO 2 concentration inside the substomatal chamber and water use efficiency. In general, all types of physical protectors led to higher mean values of gas exchanges during their permanence in the sowing site until 70 DAS, except for CO 2 assimilation. However, water use efficiency was higher in APP seedlings at the same period. |
url |
http://www.redalyc.org/articulo.oa?id=53447685010 |
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