Anatomia foliar de biótipos de Conyza sumatrensis suscetível e resistente ao glifosato
| Autor: | Adriana Favaretto, Theodoro Schneider, Mauro Antônio Rizzardi |
|---|---|
| Jazyk: | portugalština |
| Rok vydání: | 2020 |
| Předmět: |
biology
Epidermis (botany) lcsh:S General Medicine Stomatal index Vascular bundle biology.organism_classification Conyza sumatrensis lcsh:Agriculture chemistry.chemical_compound Horticulture chemistry caracterização anatômica. buva. feixes vasculares. espessura da epiderme. índice estomático Glyphosate Herbicide glyphosate Weed |
| Zdroj: | Agrarian, Vol 13, Iss 49, Pp 330-338 (2020) |
| ISSN: | 1984-2538 |
| Popis: | Conyza sumatrensis is a weed that have resistance to the herbicide glyphosate. Resistance may be involved with anatomical differences between biotypes resistant and susceptible to the herbicide. The objective of this work was to perform the anatomical description of the leaf of Conyza sumatrensis resistant and susceptible to the herbicide glyphosate, with a view to identify possible alterations that may alter the absorption and/or translocation of the herbicide. For this, leaves of the resistant biotypes and one susceptible to glyphosate were collected and fixed in FAA 70 and later fixed in ethanol 70. The determination of the thickness of the epidermis on the adaxial side of the leaves of the biotypes, diameter of the vascular bundles and density and stomatal index were performed. The histological analyzes were performed using an optical microscope, and photographs of at least four readings were taken on each slide. The results observed in the characterization of the adaxial epidermis and the diameter of the bundles not showed differences between resistant and susceptible biotypes. On the other hand, the susceptible biotype presents higher density and stomatal index when compared to the others, explaining the difference of susceptibility to the glyphosate herbicide among the materials. |
| Databáze: | OpenAIRE |
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