Cluster Thinning Does Not Improve Fruit Composition in Grapevine Red Blotch Virus-infected <i>Vitis vinifera</i> L.

BIOLOGY AND SPREAD OF GRAPEVINE RED BLOTCH-ASSOCIATED VIRUS Principal Investigator: Co-Principal Investigator: Collaborator:

Grapevine red blotch-associated virus (GRBaV) was isolated from table and wine grapes, as well as rootstocks, affected by red blotch, a recently recognized viral disease. Phylogenetic analyses revealed the clustering of GRBaV isolates two groups (clades) of genetic variants (Krenz et al., 2014, Al Rwahnih et al., 2015). Producing and using a full-length infectious clone of a representative isol...

Cluster and Berry Characteristics of Grapevine (Vitis vinifera L.) as Influenced by Thinning Agents and Gibberrelic Acid Applications

Some cultivars of grapevine have very compact cluster which adversely affect its quality and marketability. ‘Yaghouti’ is a commercial early table grape cultivar that has very compact clusters. The present study was conducted to assess the effects of mechanical and chemical thinning as well as GA3 application on cluster morphology and berry size of grapevine cv. ‘Yaghouti’. Treatments were chem...

Within-cluster hand-thinning increases fruit Weight in north American pawpaw [Asimina triloba (l.) Dunal]

1 Co-Investigator of Horticulture, Atwood Research Facility, Kentucky State University, Frankfort, KY 40601-2355 2 Principal Investigator of Horticulture and Curator, USDA National Clonal Germplasm Repository for Asimina species, Atwood Research Facility, Kentucky State University, Frankfort, KY 40601-2355. To whom reprint requests should be addressed. Abstract Pawpaw [Asimina triloba (L.) Duna...

The Development of a Quantitative Assay for the Detection of Grapevine Red Blotch-associated Virus in Vitis vinifera Identifies Significant Differences in Virus Distribution

Title: “Crop thinning (hand versus mechanical), grape maturity and anthocyanin concentration: outcomes from irrigated Cabernet Sauvignon (V. vinifera L.) in a warm climate”

• The trial was carried out at 2 sites. The vines in both sites were trained to a 2-wire vertical trellis. The only difference was: Site 1 was thinned with a Gregoire G65 harvester, and used three pairs of bow rods to thin the lower third of the canopy. Site 2 used a URM Vinestar harvester, and used four pairs of bow rods to thin the lower half of the canopy. The reason only a portion of the ca...