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| Format: | Artículo científico |
| Language: | en |
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Universidade Federal de Lavras
2019
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| Online Access: | https://www.redalyc.org/articulo.oa?id=74460212001 https://www.redalyc.org/journal/744/74460212001/ https://www.redalyc.org/journal/744/74460212001/html/ https://www.redalyc.org/journal/744/74460212001/74460212001.epub https://www.redalyc.org/journal/744/74460212001/movil |
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Table of Contents:
- PROGENY PERFORMANCE AND PATHOGEN ATTACK RELATIVE TO ELEVATION IN A NEOTROPICAL TREE Daniel Renison Hernán Bergero Florencia Soteras M. Lucrecia Herrero Juan Manuel Rodríguez Romina C. Torres Ana M. Cingolani Isabell Hensen Agrociencias Córdoba Altitude Argentina Kageneckia lanceolata Climate and resource availability at the parent tree location are known to explain progeny characteristics; however, few studies have examined the role of resistance or tolerance to pathogens, even though climate is a main driver of pathogen abundance. We hypothesize that climate at the parent tree location has a relatively greater influence on progeny resistance or tolerance to pathogens than other progeny characteristics, such as seed mass or seedling growth. As a study species we used the vulnerable Neotropical tree Kageneckia lanceolata known to be susceptible to damping-off diseases. We collected seeds from 60 trees along the species` entire elevational gradient in central Argentina as a surrogate for climatic gradient and selected an ample array of parent tree sizes and rockiness under the crown as surrogate of tree access to resources. Seedling survival in a common nursery significantly increased with elevation of the parent tree from 40 to 80 % (P < 0.001), with damping-off being the only identified cause of mortality. We also found a non-significant trend suggesting that proportional growth during the cold semester increased with elevation (P = 0.083). Seed mass, germination, and growth of seedlings were not significantly influenced by elevation (P > 0.05). Parent tree size and rockiness were not related to any of the measured progeny characteristics. We conclude that the pathogenic environment around parental plants might have a great influence on progeny resistance or tolerance to pathogens and suggest that incorporating the pathogen dimension into future progeny studies may yield important findings. 2019 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74460212001 https://www.redalyc.org/journal/744/74460212001/ https://www.redalyc.org/journal/744/74460212001/html/ https://www.redalyc.org/journal/744/74460212001/74460212001.epub https://www.redalyc.org/journal/744/74460212001/movil 10.1590/01047760201925012566 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.1 Vol.25