ITEM VIEW

Leaf : fruit ratio and vine water status effects on grenache noir (Vitis vinifera L.) berry composition : water, sugar, organic acids and cations

dc.contributor.authorEtchebarne, F.en_ZA
dc.contributor.authorOjeda, H.en_ZA
dc.contributor.authorHunter, J.J.en_ZA
dc.date.accessioned2017-05-18T08:21:47Z
dc.date.available2017-05-18T08:21:47Z
dc.date.issued2010
dc.identifier.citationEtchebarne, F., Ojeda, H. & Hunter, J.J. 2010. South African Journal for Enology and Viticulture 31(2):106-115, doi:10.21548/31-2-1407
dc.identifier.issn0253-939X (online)
dc.identifier.issn0253-939X (print)
dc.identifier.otherdoi:10.21548/31-2-1407
dc.identifier.urihttp://hdl.handle.net/10019.1/101538
dc.descriptionCITATION: Etchebarne, F., Ojeda, H. & Hunter, J.J. 2010. South African Journal for Enology and Viticulture 31(2):106-115, doi:10.21548/31-2-1407.
dc.descriptionThe original publication is available at http://www.journals.ac.za/index.php/sajev
dc.description.abstractSeasonal variation in the water, sugar, organic acid and cation contents of developing grape berries (Vitis vinifera L. ‘Grenache noir’) under different levels of water supply (with and without deficit irrigation) and leaf:fruit ratios (18, 10 and five leaves per primary shoot, with one bunch per shoot), were investigated over two successive years in Mediterranean conditions (South of France). Fourteen shoots per vine were left for each leaf:fruit ratio level, and each vine was considered as having homogeneous primary shoots. The growth rate of the berries was increased with irrigation. Total dry matter content of the berry was not affected by leaf:fruit ratios, but the sugar loading decreased during berry development with a lower leaf:fruit ratio (five leaves per bunch). Treatments had little effect on organic acid contents and pH. Berry cation accumulation depended on vine water status and not on the total leaf area of the vine. Under irrigated conditions, calcium continued to accumulate in the berries after véraison. This confirms a partial functioning of the berry xylem during the post-véraison period. The seasonal variation in berry composition was less dependent on the leaf:fruit ratio than on the water status of the vine (mainly cations and sugar). This study provides evidence for the importance of plant water status effects on berry composition, irrespective of the leaf:fruit ratio. Vine water status is a major regulating factor for source-sink relationships.en_ZA
dc.description.urihttp://www.journals.ac.za/index.php/sajev/article/view/1407
dc.language.isoen_ZAen_ZA
dc.publisherSouth African Journal for Enology and Viticulture
dc.subjectLeaf - fruit ratioen_ZA
dc.titleLeaf : fruit ratio and vine water status effects on grenache noir (Vitis vinifera L.) berry composition : water, sugar, organic acids and cationsen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's version
dc.rights.holderSouth African Journal for Enology and Viticulture


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

ITEM VIEW