Open AccessShoot development and dieback in progenies of Nothofagus obliqua
Author(s) -
Javier G. Puntieri,
Javier Grosfeld,
Marina Stecconi,
Cécilia Brion,
María Marta Azpilicueta,
Leonardo Gallo,
Daniel Barthélémy
Publication year - 2007
Publication title -
annals of forest science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.763
H-Index - 77
eISSN - 1297-966X
pISSN - 1286-4560
DOI - 10.1051/forest:2007068
Subject(s) - shoot , biology , nothofagus , botany , abscission , horticulture , lateral shoot , axillary bud , explant culture , biochemistry , in vitro
International audienceShoot growth and dieback were compared among progenies of nursery-grown seedlings of Nothofagus obliqua belonging to seven progenies of the same provenance (Quila-Quina, Argentina). First-year shoots consisted of one growth unit (GU) and second-year shoots of one or two GUs. The probability of development of two GU was similar for all progenies. Progenies were different in terms of shoot size, terminal bud abscission, the extent of shoot dieback after shoot extension and the node of origin of the relay shoot on the first shoot. Plants with a second-year shoot consisting of two GUs had a thicker stem and more nodes than those with single-GU shoots. The selection of N. obliqua seed trees based on architectural traits suitable for forestry development at specific sites must contemplate variability among progenies and their probabilities of successful development under different conditions
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