Water stress, photosynthesis and early growth patterns of cuttings of three Populus clones.
Tree Physiol
; 13(3): 213-26, 1993 Oct.
Article
en En
| MEDLINE
| ID: mdl-14969880
ABSTRACT
Photosynthetic attributes, leaf area and early root growth patterns were studied in three Populus clones to identify traits associated with superior growth potential on sites where water could be a limiting factor. It was found that early root growth and superior leaf area production were more closely related to growth potential than were photosynthetic capacity or carboxylation efficiency. A hybrid clone of Populus nigra var. charkowiensis (syn. P. nigra var. plantierensis) x P. nigra cv. 'Incrassata' (NE308) had more leaf area production and greater root system development in both wet and dry soil than did a P. trichocarpa clone (T6) and a P. balsamifera clone (B3). Despite greater above- and below-ground productivity, plants of clone NE308 had significantly lower photosynthetic capacity and carboxylation efficiency and a slightly higher CO(2) compensation point than plants of clones T6 and B3. Rapid early leaf and root growth appear to be key attributes associated with productivity in these clones regardless of soil water availability.
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Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Tree Physiol
Asunto de la revista:
BOTANICA
/
FISIOLOGIA
Año:
1993
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
CA
/
CANADA
/
CANADÁ