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Grapevine culture in trenches: root growth and dry matter partitioning
Author(s) -
ZAPATA C.,
MAGNÉ C.,
DELÉENS E.,
BRUN O.,
AUDRAN J.C.,
CHAILLOU S.
Publication year - 2001
Publication title -
australian journal of grape and wine research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 77
eISSN - 1755-0238
pISSN - 1322-7130
DOI - 10.1111/j.1755-0238.2001.tb00199.x
Subject(s) - rootstock , cultivar , perennial plant , biology , dry matter , horticulture , viticulture , vitis vinifera , root system , agronomy , botany , wine , food science
As a part of a global project aimed at comparing the physiology of several grapevine ( Vitis vinifera L.) cultivars, we tested plant cultivation in trenches under semi‐controlled conditions. Vegetative growth of vines of two cultivars, Pinot Noir and Merlot, from different locations, were followed during a 3‐year period. Roots of trench‐grown vines grew widely, leading to a root architecture closer to that observed under field conditions than that of potted vines. In addition, the root system could be sampled exhaustively for analyses. Although morphologically different, vines of the two cultivars exhibited similar patterns in dry matter production during the whole period, except at early flowering in year 3. Surprisingly, perennial parts accounted for this difference, though both cultivars were grafted onto the same SO4 rootstock clone. Consistently, vines exhibited root necrosis at any sampling date throughout spring, this process affecting more roots for the Pinot Noir/SO4 combination than for Merlot/SO4.