Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae)
A heteroblastic (or vegetative phase) change is an abrupt manifestation in the general heteroblastic development during the ontogeny of plants. The Canary Island pine undergoes an especially marked and delayed heteroblastic change, including both the formation of secondary needles on dwarf shoots and the onset of preformed growth. To assess genetic and environmental effects on the heteroblastic change in this species, we followed plants from 19 populations at a dry site and a wetter site. Comparing juvenile and adult needles from the same individuals, the adult had a significantly lower rate of water loss and higher leaf mass per area. Pooling data from all seed sources, the heteroblastic change took place when plants reached a critical height, on average, at 4 years of age at the dry site and 1 year earlier at the wet site. Within a subsample of individuals of equal size, mortality was significantly higher in juvenile plants than in mature plants. However, the juvenile phase was longer in plants from dry regions when compared to plants from highly productive, wet regions. This apparent contradiction might be explained through differential resource allocation and the cost of sclerophylly and resprouting ability. Considering the life strategy of the Canary Island pine, we interpret the prolonged juvenile phase as an unavoidable trade-off for the high tolerance of adults to harsh environments.
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Format: | artículo biblioteca |
Language: | English |
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John Wiley & Sons
2006
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Subjects: | Canary Islands, Ontogeny, Phase change, Pinaceae, Provenance trial, Survival, |
Online Access: | http://hdl.handle.net/20.500.12792/4987 http://hdl.handle.net/10261/289643 |
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dig-inia-es-10261-2896432023-02-16T12:22:30Z Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) Climent Maldonado, José María Chambel, M. R. López, R. Mutke, S. Alía Miranda, Ricardo Gil, L. Canary Islands Ontogeny Phase change Pinaceae Provenance trial Survival A heteroblastic (or vegetative phase) change is an abrupt manifestation in the general heteroblastic development during the ontogeny of plants. The Canary Island pine undergoes an especially marked and delayed heteroblastic change, including both the formation of secondary needles on dwarf shoots and the onset of preformed growth. To assess genetic and environmental effects on the heteroblastic change in this species, we followed plants from 19 populations at a dry site and a wetter site. Comparing juvenile and adult needles from the same individuals, the adult had a significantly lower rate of water loss and higher leaf mass per area. Pooling data from all seed sources, the heteroblastic change took place when plants reached a critical height, on average, at 4 years of age at the dry site and 1 year earlier at the wet site. Within a subsample of individuals of equal size, mortality was significantly higher in juvenile plants than in mature plants. However, the juvenile phase was longer in plants from dry regions when compared to plants from highly productive, wet regions. This apparent contradiction might be explained through differential resource allocation and the cost of sclerophylly and resprouting ability. Considering the life strategy of the Canary Island pine, we interpret the prolonged juvenile phase as an unavoidable trade-off for the high tolerance of adults to harsh environments. 2023-02-16T12:22:30Z 2023-02-16T12:22:30Z 2006 artículo American Journal of Botany 93(6): 840-848 (2006) 0002-9122 http://hdl.handle.net/20.500.12792/4987 http://hdl.handle.net/10261/289643 10.3732/ajb.93.6.840 1537-2197 en none John Wiley & Sons |
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Canary Islands Ontogeny Phase change Pinaceae Provenance trial Survival Canary Islands Ontogeny Phase change Pinaceae Provenance trial Survival |
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Canary Islands Ontogeny Phase change Pinaceae Provenance trial Survival Canary Islands Ontogeny Phase change Pinaceae Provenance trial Survival Climent Maldonado, José María Chambel, M. R. López, R. Mutke, S. Alía Miranda, Ricardo Gil, L. Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) |
description |
A heteroblastic (or vegetative phase) change is an abrupt manifestation in the general heteroblastic development during the ontogeny of plants. The Canary Island pine undergoes an especially marked and delayed heteroblastic change, including both the formation of secondary needles on dwarf shoots and the onset of preformed growth. To assess genetic and environmental effects on the heteroblastic change in this species, we followed plants from 19 populations at a dry site and a wetter site. Comparing juvenile and adult needles from the same individuals, the adult had a significantly lower rate of water loss and higher leaf mass per area. Pooling data from all seed sources, the heteroblastic change took place when plants reached a critical height, on average, at 4 years of age at the dry site and 1 year earlier at the wet site. Within a subsample of individuals of equal size, mortality was significantly higher in juvenile plants than in mature plants. However, the juvenile phase was longer in plants from dry regions when compared to plants from highly productive, wet regions. This apparent contradiction might be explained through differential resource allocation and the cost of sclerophylly and resprouting ability. Considering the life strategy of the Canary Island pine, we interpret the prolonged juvenile phase as an unavoidable trade-off for the high tolerance of adults to harsh environments. |
format |
artículo |
topic_facet |
Canary Islands Ontogeny Phase change Pinaceae Provenance trial Survival |
author |
Climent Maldonado, José María Chambel, M. R. López, R. Mutke, S. Alía Miranda, Ricardo Gil, L. |
author_facet |
Climent Maldonado, José María Chambel, M. R. López, R. Mutke, S. Alía Miranda, Ricardo Gil, L. |
author_sort |
Climent Maldonado, José María |
title |
Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) |
title_short |
Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) |
title_full |
Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) |
title_fullStr |
Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) |
title_full_unstemmed |
Population divergence for heteroblasty in the Canary Island pine (Pinus canariensis, Pinaceae) |
title_sort |
population divergence for heteroblasty in the canary island pine (pinus canariensis, pinaceae) |
publisher |
John Wiley & Sons |
publishDate |
2006 |
url |
http://hdl.handle.net/20.500.12792/4987 http://hdl.handle.net/10261/289643 |
work_keys_str_mv |
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_version_ |
1767602992677126144 |