Visual and anatomical analysis of welding quality x scion survival in Araucaria angustifolia
| Autor: | Ivar Wendling, Cleusa Bona, Bruno Francisco Sant'Anna-Santos, Henrique Soares Koehler, Katia Christina Zuffellato-Ribas, Helena Cristina Rickli-Horst |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
anatomy Grafting (decision trees) Agriculture (General) anatomia vegetal Welding 01 natural sciences flute grafting law.invention S1-972 patch grafting law paraná pine vascular connection Paraná pine Survival rate Orthodontics Alternative methods biology propagação de plantas Quality assessment technology industry and agriculture 04 agricultural and veterinary sciences respiratory system biology.organism_classification Fisiologia vegetal 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Rootstock Agronomy and Crop Science Araucaria 010606 plant biology & botany |
| Zdroj: | Acta Scientiarum: Agronomy, Vol 43, Pp e45509-e45509 (2020) Acta Scientiarum. Agronomy; Vol 43 (2021): Publicação contínua; e45509 Acta Scientiarum. Agronomy; v. 43 (2021): Publicação contínua; e45509 Acta Scientiarum. Agronomy Universidade Estadual de Maringá (UEM) instacron:UEM Acta Scientiarum. Agronomy, Volume: 43, Article number: e45509, Published: 11 SEP 2020 |
| ISSN: | 1807-8621 1679-9275 |
| Popis: | Grafting is an alternative method for the early production of Araucaria angustifolia seeds, and welding quality is essential for the success of the technique. The objective of this study was to create a classification of welding quality to estimate the percentage of scion survival. The patch and flute grafting techniques were used in a greenhouse and in the field. Survival was evaluated 270 days after grafting (DAG). At 60 DAG, observations of the graft connection region were made with the naked eye, classifying the connections into four welding classes. After 160 DAG, transverse cuts were performed on each class and visually and anatomically evaluated. Flute grafting presented higher initial survival (79%), but at 180 DAG, the survival rate of both techniques was similar (48% for flute and 41% for patch). There was greater scion survival for the class that had only two regions in contact with discontinuity in the bark. Stabilization of survival occurred after 180 DAG, regardless of the welding class. Visually, there were differences in welding quality; however, anatomically, all classes presented vascular connections. The visual welding quality assessment underestimated the percentage of scion survival. However, the vascular connection and development of parenchymatous tissue are promising for diagnosing grafting success. Grafting is an alternative method for the early production of Araucaria angustifolia seeds, and welding quality is essential for the success of the technique. The objective of this study was to create a classification of welding quality to estimate the percentage of scion survival. The patch and flute grafting techniques were used in a greenhouse and in the field. Survival was evaluated 270 days after grafting (DAG). At 60 DAG, observations of the graft connection region were made with the naked eye, classifying the connections into four welding classes. After 160 DAG, transverse cuts were performed on each class and visually and anatomically evaluated. Flute grafting presented higher initial survival (79%), but at 180 DAG, the survival rate of both techniques was similar (48% for flute and 41% for patch). There was greater scion survival for the class that had only two regions in contact with discontinuity in the bark. Stabilization of survival occurred after 180 DAG, regardless of the welding class. Visually, there were differences in welding quality; however, anatomically, all classes presented vascular connections. The visual welding quality assessment underestimated the percentage of scion survival. However, the vascular connection and development of parenchymatous tissue are promising for diagnosing grafting success. |
| Databáze: | OpenAIRE |
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