This study was carried out to determine ability of secondary buds winter freezing in two Vitis species viz. vinifera L. and labrusca In 2016 2017, one genotype V. were sampled at 3 different periods during dormant period. The one-year-old shoots obtained from vineyards the on 4th, 5th 6th nodes has been used for test. For test, DTA (Differantial Thermal Analyses) methods test started +4 oC temp...

Red muscadine grape (Vitis rotundifolia Michx.) wines are very susceptible to browning and overall loss of color quality during processing and storage. This study examined the effects of three pH levels (2.90, 3.20, 3.80), three sulfur dioxide levels (25, 50, 75 ppm free SO2), three storage temperatures (20°C, 30°C, 40°C), and three storage times (0, 3, 9 months). A higher pH resulted in a loss...

This study looked at regulated deficit irrigation (RDI) on leafhoppers in the genus Erythroneura (Erythroneura elegantula Osborn, or western grape leafhopper, and Erythroneura variabilis Beamer) (Hemiptera: Cicadellidae), which are serious pests of cultivated grape (Vitis vinifera L.) in California. RDI is an irrigation strategy that reduces irrigation during a critical point in the phenology o...

Hydroponically grown ten grape genotypes (Vitis vinifera L.) were treated with different concentrations of NaCl. Chawga genotype accumulated K+ in its root and shoot even at high salinity. The correlation between Na+ and K+ concentrations in root and lamina of all genotypes was negative (P

Although leaf of Vitis vinifera (Vitaceae) has been used in traditional medicine to treat diarrhea, but no clinical and experimental studies have been conducted on its effects on the uterus. It has previously been reported that Vitis vinifera leaf extract reduces the ileum contractions induced by KCl and acetylcholine. The aim of the present study was to investigate the effect of Vitis vinifera...

Controlling crown gall in grapevine ( Vitis vinifera L.) caused by the pathogenic bacterium Allorhizobium vitis is a major challenge for global viticulture, as this pathogen highly persistent vineyards once infected. The bacteria can enter plant through open wounds during pruning and then systemically colonize plant. This study aimed at evaluating potential of Paraburkholderia phytofirmans PsJN...

Non-tumorigenic Rhizobium (syn. Agrobacterium) vitis strain ARK-1 (ARK-1) has been shown to reduce crown gall in grapevine (Vitis vinifera) seedlings when co-inoculated with Japanese tumorigenic isolates of R. vitis. The objectives this study were test ARK-1's efficacy as a biological control agent against isolated from grapevines Virginia, and examine genetic diversity found USA Japan. was int...

Understanding the interactions between pathogen, crop and vector are necessary for the development of disease control practices of vector-borne pathogens. For instance, resistant plant genotypes can help constrain disease symptoms due to infections and limit pathogen spread by vectors. On the other hand, genotypes susceptible to infection may increase pathogen spread owing to their greater path...