A new concept for insect damage evaluation based on plant physiological variables
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| Format: | Artículo científico |
| Sprache: | en |
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Academia Brasileira de Ciências
2006
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| _version_ | 1876468121968050176 |
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| author | Ademir D. Neves |
| author_facet | Ademir D. Neves |
| contents | A new concept for insect damage evaluation based on plant physiological variables Ademir D. Neves José Roberto Postali Parra Ricardo F. Oliveira Multidisciplinaria (Ciencias Naturales y Exactas) plant citrus coffee photosynthesis insect interactions The objective of this study was to determine the damage levels caused by Orthezia praelonga Douglas, 1891and Leucoptera coffeella (Guérin-Mèneville 1842), on rangpur lime and Obatã coffee leaves, respectively.Measurements were based on a new concept for the evaluation of the following plant physiological parameters:photosynthesis, stomatal conductance, leaf temperature and transpiration, and internal concentration ofCO2 (by infrared analyzer). A negative correlation between infestation level and photosynthesis was found,where the negative inflexion point of the curve was considered as a reference for damage levels. The controllevel for O. praelonga is below the 7-13% limit for damaged leaf area (40 to 70 scales per leaf), while forL. coffeella it is below the 26-36% limit for the same variable. Photosynthesis provided the best correlationfor this type of analysis. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778415 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.78 |
| format | Artículo científico |
| id | redalyc_32778415 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | A new concept for insect damage evaluation based on plant physiological variables Ademir D. Neves Multidisciplinaria (Ciencias Naturales y Exactas) plant citrus coffee photosynthesis insect interactions A new concept for insect damage evaluation based on plant physiological variables Ademir D. Neves José Roberto Postali Parra Ricardo F. Oliveira Multidisciplinaria (Ciencias Naturales y Exactas) plant citrus coffee photosynthesis insect interactions The objective of this study was to determine the damage levels caused by Orthezia praelonga Douglas, 1891and Leucoptera coffeella (Guérin-Mèneville 1842), on rangpur lime and Obatã coffee leaves, respectively.Measurements were based on a new concept for the evaluation of the following plant physiological parameters:photosynthesis, stomatal conductance, leaf temperature and transpiration, and internal concentration ofCO2 (by infrared analyzer). A negative correlation between infestation level and photosynthesis was found,where the negative inflexion point of the curve was considered as a reference for damage levels. The controllevel for O. praelonga is below the 7-13% limit for damaged leaf area (40 to 70 scales per leaf), while forL. coffeella it is below the 26-36% limit for the same variable. Photosynthesis provided the best correlationfor this type of analysis. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778415 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.78 |
| title | A new concept for insect damage evaluation based on plant physiological variables |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) plant citrus coffee photosynthesis insect interactions |
| url | https://www.redalyc.org/articulo.oa?id=32778415 |