Short Note: Root Restriction Hindered Early Allometric Differentiation Between Seedlings of Two Provenances of Canary Island Pine

Climent, J. and Alonso Náger, Jesús and Gil Sanchez, Luis Alfonso (2008). Short Note: Root Restriction Hindered Early Allometric Differentiation Between Seedlings of Two Provenances of Canary Island Pine. "Silvae Genetica", v. 57 (n. 4-5); pp. 187-193. ISSN 0037-5349.

Description

Title: Short Note: Root Restriction Hindered Early Allometric Differentiation Between Seedlings of Two Provenances of Canary Island Pine
Author/s:
  • Climent, J.
  • Alonso Náger, Jesús
  • Gil Sanchez, Luis Alfonso
Item Type: Article
Título de Revista/Publicación: Silvae Genetica
Date: January 2008
Volume: 57
Subjects:
Freetext Keywords: Mini-rhizotrons, root architecture, container, biomass allocation, ontogeny
Faculty: E.T.S.I. Montes (UPM)
Department: Silvopascicultura [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Based on the optimal partitioning theory, the comparative assessment of seedling allometry is a common task in retrospective genetic tests and early testing of forest reproductive material. Our hypothesis was that root restriction imposed by the container might hinder or rule out genetic differences in biomass allocation. We grew seedlings of two contrasted provenances of Canary Islands pine in mini-rhizotrons, 60 and 90 cm deep, and alternatively in standard bottom-open 200 cc forest containers. In the mini-rhizotrons, plants from the drier provenance allocated more biomass to roots, especially to the tap root and invested less in needles, both in a biomass and leaf area basis, and this morphological divergence increased between two harvests, undertaken at 57 and 115 days after planting. By contrast, confirming our hypothesis, at the 115 days harvest, the plants grown in standard containers did not exhibited significant differences between provenances for Leaf Mass Fraction, Root Mass Fraction and Leaf Area Ratio. We conclude that the physical constraint for root development imposed by small containers increases the probability of dismissing the genetic effect in biomass allocation when assessing forest reproductive materials at the short term, even when the whole plant growth (total dry weight) might be unaffected

More information

Item ID: 2267
DC Identifier: http://oa.upm.es/2267/
OAI Identifier: oai:oa.upm.es:2267
Official URL: http://www.sauerlaender-verlag.com/index.php?id=271
Deposited by: Memoria Investigacion
Deposited on: 10 Jan 2019 12:53
Last Modified: 10 Jan 2019 12:53
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