Effect of pruning and mechanical fruit thinning on crop load and berry and wine composition of Tempranillo in Texas

Autor: Pierre Helwi, Justin Scheiner, Andreea Botezatu, Aaron Essary, Daniel Hillin

Publikováno v: IVES Technical Reviews (2021)

Tempranillo is the second most planted variety in Texas. However, over-cropping can be an issue. Crop load can be managed by pruning and mechanical fruit thinning. Mechanizing fruit thinning provides three benefits: yield reduction, berry thinning to

Externí odkaz: https://doaj.org/article/7b3ef44f48914439b34a37318f971e82

Recent advancements in understanding the terroir effect on aromas in grapes and wines

Autor: Cornelis van Leeuwen, Jean-Christophe Barbe, Philippe Darriet, Olivier Geffroy, Eric Gomès, Sabine Guillaumie, Pierre Helwi, Justine Laboyrie, Georgia Lytra, Nicolas Le Menn, Stéphanie Marchand, Magali Picard, Alexandre Pons, Armin Schüttler, Cécile Thibon

Publikováno v: OENO One, Vol 54, Iss 4 (2020)

Terroir is about the link between wine and its origin. It has long been understood by sensory evaluation that the taste of wine from a given variety can be related to its origins. Specific organoleptic characteristics of wine are influenced by enviro

Externí odkaz: https://doaj.org/article/94ffc75f7cdd435da11736bf24c579e9

Roostocks/scion/ nitrogen interactions affect secondary metabolism in the grape berry

Autor: Aude Habran, Mauro Commisso, Pierre Helwi, Ghislaine Hilbert, Stefano Negri, Nathalie Ollat, Eric Gomès, Cornelis van Leeuwen, Flavia Guzzo, Serge Delrot

Publikováno v: Frontiers in Plant Science, Vol 7 (2016)

ABSTRACT : The present work investigates the interactions between soil content, rootstock and scion by focusing on the effects of roostocks and nitrogen supply on grape berry content. Scions of Cabernet Sauvignon (CS) and Pinot Noir (PN) varieties we

Externí odkaz: https://doaj.org/article/8a5e6e4774ec4a91b7d8d2cb6739acb4

Tolerance of Muscadine grapes (Vitis rotundifolia) to alkaline soil

Autor: Pierre Helwi, Justin J. Scheiner, Daniel Hillin

Publikováno v: OENO One. 55:227-238

Muscadine (Muscadinia rotundifolia) grapes have been used in grape variety and rootstock development due to their inherent pest and disease resistance, but little is known about their alkaline soil tolerance. In this study, Muscadine varieties, comme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82512390edc7c71bd03cf5776367e78d
https://doi.org/10.20870/oeno-one.2021.55.2.3387

Vine Nitrogen Status Does Not Have a Direct Impact on 2-Methoxy-3-isobutylpyrazine in Grape Berries and Wines

Autor: Serge Delrot, Eric Gomès, Pierre Helwi, Cécile Thibon, Philippe Darriet, Sabine Guillaumie, Ghislaine Hilbert, Aude Habran, Cornelis van Leeuwen

Publikováno v: Journal of Agricultural and Food Chemistry
Journal of Agricultural and Food Chemistry, American Chemical Society, In press, 63 (44), pp.9789-9802. ⟨10.1021/acs.jafc.5b03838⟩

Methoxypyrazines (MP) constitute a large family of compounds that contribute to the vegetative varietal aroma of many grapevine varieties and wines. The berry content in 2-methoxy-3-isobutylpyrazine (IBMP), a major MP reminiscent of green-pepper arom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55dc41ddad6244cb1734d3bfc959116b
https://doi.org/10.1021/acs.jafc.5b03838