New Zealand Journal of Crop and Horticultural Science abstracts
Qualitative and quantitative development of carbohydrate reserves
during the biological cycle of Jerusalem artichoke (Helianthus tuberosus L.)
tubers
M. BEN CHEKROUN
J. AMZILE
M. EL YACHIOUI
N. E. EL HALOUI
Biology Laboratory
Ibn Tofail University
School of Sciences
14000, Kenitra
Morocco
J. PREVOST
Laboratory of Plant Ecology
School of Sciences
123 Albert Thomas
87100, Limoges
France
Abstract A dry matter (DM) assay along with a qualitative and
quantitative carbohydrate study were conducted on two Jerusalem artichoke
(Helianthus tuberosus L.) cultivars--`Kharkov' and `Violet de Rennes'.
In addition to sucrose, glucose, and fructose, some inulin-type glucofructosans
were detected at all stages of development of the tubers. The carbohydrate
content was found to average from 65 to 80% DM. The tubers lose a fraction of
their carbohydrates in winter--27.6% for `Kharkov' and 35.6% for `Violet de
Rennes'.
Résumé Un dosage de matière sèche
(MS) ainsi qu'une étude qualitative et quantitative de glucides ont
été effectués sur deux cultivars de Topinambour
(Helianthus tuberosus L.), `Kharkov' et `Violet de Rennes'. En plus du
saccharose, glucose et fructose, des glucofructosanes ont été
détectées pendant les différents stades du
développement des tubercules de Topinambour. Les glucides
représentent 65 à 80% MS. Les tubercules perdent une fraction de
leurs glucides en hiver, 27.6% pour le `Kharkov' et 35.6% pour le `Violet de
Rennes'.
Keywords fructan; fructose; glucofructosan; `Kharkov';
`Violet de Rennes'; Jerusalem artichoke; Helianthus tuberosus L.
PDF file of entire paper: medium quality (767K); (scanned from paper original: notes about this process)
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