NDLI: Differences in morphology, gas exchange and root hydraulic conductance before planting in Pinus canariensis seedlings growing under different fertilization and light regimes

Content Provider	Springer Nature Link
Author	Luis, V. C. Llorca, M. Chiri, E. Hernández, E. I. Vilagrosa, A.
Copyright Year	2010
Abstract	As the main forestry species in the Canary Islands (Spain), Pinus canariensis is frequently used in afforestation programs. Several nursery techniques are commonly employed to modify its morphology and physiology with the aim of improving post-planting survival and growth. In this work, we studied how fertilization and light regime treatments applied during the nursery period modify biomass allocation patterns and produce effects in gas exchange and root hydraulic conductance. Seedlings were grown for a 6-month period in the nursery under two light regimes (full sunlight and 40% PAR reduction), and three fertilization levels were applied in each light regime. Morphology, biomass allocation patterns, leaf gas exchange and hydraulic conductance of the whole root system were evaluated. Fertilization treatments produced significant changes in biomass allocation, gas exchange and root hydraulic conductance under both light regimes. In contrast, no differences were found between full sunlight and shade, except for a slight variation in the root:shoot ratio. Photosynthesis rate and WUE increased with fertilization in both light regimes, while E and gs maintained the same values. An opposite trend was observed for root hydraulic conductance, which showed lower values with high fertilization regimes. The results obtained indicate that fertilization is more important, determining high photosynthetic capacity than high hydraulic conductance rates before planting in Pinus canariensis containerized seedlings.
Starting Page	1143
Ending Page	1150
Page Count	8
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	24
Issue Number	6
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-09-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fertilization Gas exchange Hydraulic conductance Morphology Pinus canariensis Shade Plant Physiology Plant Pathology Plant Anatomy/Development Agriculture Plant Sciences Forestry
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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