Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Taxonomic differences between /Pinus sylvestris/ and /P. uncinata/ revealed in the stomata and cuticle characters for use in the study of fossil material
Year:2009
Research Areas
  • Botany
Information
Abstract
Taxonomic differences in the needle epidermis characteristics of Pinus sylvestris L. and Pinus uncinata Ramond ex DC. from two Iberian populations were sought; such information could help identify these species when pollen analysis and the inspection ofwood anatomy fails. The features of the cuticle are commonlywell preserved in the fossil record. Although the epidermal patterns of the examined taxa were similar, qualitative differences were seen in the subsidiary and guard cells. P. sylvestris showed small subsidiary cells homogenously arranged around the opening of the epistomatal chamber, while P. uncinata showed small, lateral subsidiary cells and nondifferentiated subsidiary cells in the polar position. The aperture of the epistomatic chamber of P. uncinata was also larger in diameter (15.1±1.8 ¿m P. sylvestris; 21.1±2.8 ¿m P. uncinata). Principal components analysis and discriminant analysis was performed on the features of the guard cells characterising the size and shape of the cuticular thickenings ¿ all the variables analysed can be measured in disperse stomata in microscope preparations for pollen analysis. Significant differences were found in the upper woody lamellae width and the coefficient associated with the shape of the medial lamellae borders (discriminant analysis weighting 0.739 and 0.826 respectively). Other significant parameters included the coefficient associated with the relative size of the medial lamellae border width of the guard cells with respect to the distance between the external limits of the medial lamellae borders, and the length of the upper woody lamella. Different light regimens appeared not to significantly affect the variability of the studied features
International
Si
JCR
Si
Title
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISBN
0034-6667
Impact factor JCR
1,325
Impact info
Volume
155
10.1016/j.revpalbo.2009.01.002
Journal number
0
From page
61
To page
68
Month
ENERO
Ranking
Participants
  • Autor: Salvia García Álvarez (UPM)
  • Autor: Carlos Morla Juaristi (UPM)
  • Autor: Ignacio Garcia-Amorena Gomez del Moral (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Historia y dinámica del paisaje vegetal
  • Departamento: Silvopascicultura
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