EFFECT OF THREE IRRIGATION FREQUENCIES APPLIED BY DRIP IRRIGATION OVER TABLE GRAPES (VITIS VINIFERA CV. THOMPSON SEEDLESS) LOCATED IN THE ACONCAGUA VALLEY. CHILE

2004 ◽  
pp. 175-181 ◽  
Author(s):  
G. Selles van Sch ◽  
R.E. Ferreyra ◽  
G.W. Contreras ◽  
R.B. Ahumada ◽  
J. Valenzuela ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Drip Irrigation ◽  
Thompson Seedless ◽  
Table Grapes

scholarly journals 808 PB 144 EFFECTIVNESS OF AEROSOL SPRAYS FOR CONTROLLING ROT IN TABLE GRAPES

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 549a-549
Author(s):  
M. Ahmed Ahmedullah
Keyword(s):  
Sulfur Dioxide ◽  
Relative Humidity ◽  
Vitis Vinifera ◽  
Aerosol Particles ◽  
High Relative Humidity ◽  
Viable Alternative ◽  
Thompson Seedless ◽  
Storage Size ◽  
Table Grapes ◽  
And Control

Fruit of Vitis vinifera cvs. Flame Seedless, Thompson Seedless and Black Monukka were fumigated with 4, 6 and 8 Deccodione Smoke Tables (DST) for 30 minutes. Fruit was stored at 32 F and high relative humidity. Decay control index, freshness of stems and bleaching around the capstem were recorded at 4, 8, 12 and 16 weeks of storage. Size of the aerosol particles was determined using an electrical aerosol analyzer. Fruit was analysed for Deccodione residues. Lower rates of the fungicide gave unsatisfactory decay control. Eight DSTs successfully controlled decay upto a period of 14 weeks. There was no bleaching of pigments commonly associated with sulfur dioxide fumigation. Majority of the aerosol particles were between 0.18 and 0.32 micrometers. Deccodione residues on the fruit were within the acceptable limits established for Deccodione. There was no perceptible difference in taste between treated and control fruit. This method of decay control could provide a viable alternative to sulfur dioxide fumigation.

scholarly journals Botrytis prunorum Associated to Vitis vinifera Blossom Blight in Chile

Plant Disease ◽  
2020 ◽  
Vol 104 (9) ◽  
pp. 2324-2329
Author(s):  
Marcela Esterio ◽  
Claudio Osorio-Navarro ◽  
Claudia Carreras ◽  
Madelaine Azócar ◽  
Charleen Copier ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Central Valley ◽  
Development Stage ◽  
Thompson Seedless ◽  
Climate Conditions ◽  
Table Grapes ◽  
Pathogenicity Tests ◽  
White Mycelium ◽  
Multilocus Approach ◽  
Epidemiological Characteristics

Table grapes are highly susceptible to Botrytis cinerea infections during the bloom period. After reaching the flower development stage, B. cinerea remains quiescent until berry ripening or gives rise to blossom blight under specific climate conditions. A research study was conducted on the Chilean Central Valley during the 2018–2019 growing season. Flowers of Vitis vinifera cv. Thompson Seedless were collected and B. cinerea was isolated together to a second and morphologically different species, characterized by white mycelium and low to no sporulation (11.4% of total isolates). Three randomly selected isolates within this population were genetically examined and identified as Botrytis prunorum based on a phylogenetic multilocus approach using partial regions of genes RPB2, HSP60, and G3PDH or NEP1 and NEP2. Pathogenicity tests showed that B. prunorum infects and causes wilting in healthy table grape flowers. B. prunorum isolates were able to infect Thompson Seedless berries, inducing lesions between 13.11 and 41.53% with respect to the lesion diameter generated by B. cinerea B05.10. The fungicide sensitivity was evaluated. The three genetically characterized isolates were sensitive to boscalid and to cyprodinil/fludioxonil mixture with a mean EC50 value of 5.5 µg/ml and 0.065 µg/ml, respectively. However, loss of sensitivity to fenhexamid was determined, with a mean EC50 value of 5.13 µg/ml. Our understanding about blossom blight in V. vinifera has been limited to B. cinerea. Here we associated B. prunorum as a second causal agent of this disease in Chile. This data represents a first approach to the epidemiological characteristics of B. prunorum associated with blossom blight in table grapes.

scholarly journals Resistance of Vitis Germplasm to Elsinoë ampelina (de Bary) Shear Evaluated by Lesion Number and Diameter

HortScience ◽  
2013 ◽  
Vol 48 (12) ◽  
pp. 1433-1439 ◽  
Author(s):  
Atsushi Kono ◽  
Akihiko Sato ◽  
Yusuke Ban ◽  
Nobuhito Mitani
Keyword(s):  
Vitis Vinifera ◽  
Significant Positive Correlation ◽  
Table Grape ◽  
Wine Grapes ◽  
Thompson Seedless ◽  
Sources Of Resistance ◽  
Positive Correlation ◽  
Table Grapes ◽  
Lesion Number ◽  
Elsinoe Ampelina

We evaluated the resistance of 133 grapevine cultivars or selections, including Vitis vinifera and American hybrids, on the basis of lesion number and length to identify sources of resistance to grapevine anthracnose. All germplasms tested in this study showed anthracnose symptoms to some extent, and the distribution of lesion number and diameter was continuous. Most table grape V. vinifera cultivars were highly susceptible, showing many large lesions. However, V. vinifera wine grapes were more resistant with smaller lesions. Some American hybrid grapes such as ‘Ontario’ showed very few and small lesions. There was a significant positive correlation between lesion number and size in American (r = 0.63, P = 0.0041) and Japanese hybrids (r = 0.56, P < 0.001), whereas there was no correlation between these characters in V. vinifera. Japanese tetraploid cultivars were neither highly susceptible nor resistant. High anthracnose susceptibility of most well-known table grape V. vinifera cultivars, including ‘Muscat of Alexandria’, ‘Italia’, ‘Rizamat’, ‘Kattakurgan’, and ‘Thompson Seedless’, indicates that resistance should be introgressed from other cultivars such as American hybrids or wine grapes when these susceptible table grapes or their descendants are used in breeding anthracnose-resistant table grapes.

scholarly journals Study of the Regular and High Application of Water with Drip Irrigation and Its Effect in the Floral Buds of `Thompson Seedless' Grapes

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 428C-428
Author(s):  
Adán Fimbres Fontes ◽  
Raúl Leonel Grijalva Contreras ◽  
Manuel de Jesus Valenzuela Ruiz ◽  
Gerardo Matínez Díaz
Keyword(s):  
Drip Irrigation ◽  
No Reduction ◽  
Type A ◽  
Total Water ◽  
Thompson Seedless ◽  
Floral Buds ◽  
Table Grapes ◽  
Evaporation Pan ◽  
Crop Coefficients ◽  
High Application

The region of Caborca is actually the largest grape-growing area in Mexico, with 14,000 ha. The main problem in this zone is the lack of water, and it is important to use this resource rationally. During 1990 and 1991, a drip irrigation experiment in `Thompson Seedless' table grapes was conducted. The four treatments were 120%, 166%, 206%, and 250% of the evaporation from a evaporation pan type A. The crop coefficients (Kc) applied were 7.5%, 15%, 52.5%, and 80% from the beginning of budding until 1 week after harvest, and 7.5% after harvest (postharvest). The results indicated that the best treatments were 120% (105 cm of total water applied) and 166%, with no reduction in the floral buds (5.4 per cane for 120); however, 206% and 250% (202 cm of total water applied) got the lowest number of floral buds (0.90 per cane) for the following year, and, because of that, the lowest clusters per cane.

A transcriptional study of the effects of nitric oxide on rachis browning in table grapes cv. Thompson Seedless

2021 ◽  
Vol 175 ◽  
pp. 111471
Author(s):  
Zhonghong Wu ◽  
Chenghu Dong ◽  
Jia Wei ◽  
Limin Guo ◽  
Yina Meng ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Thompson Seedless ◽  
Table Grapes

Antimicrobial constituents of Thompson seedless raisins (Vitis vinifera) against selected oral pathogens

2008 ◽  
Vol 1 (3) ◽  
pp. 151-154 ◽  
Author(s):  
J. Fausto Rivero-Cruz ◽  
Min Zhu ◽  
A. Douglas Kinghorn ◽  
Christine D. Wu
Keyword(s):  
Vitis Vinifera ◽  
Thompson Seedless ◽  
Oral Pathogens

scholarly journals Preharvest Fungicide, Potassium Sorbate, or Chitosan Use on Quality and Storage Decay of Table Grapes

Plant Disease ◽  
2013 ◽  
Vol 97 (3) ◽  
pp. 307-314 ◽  
Author(s):  
E. Feliziani ◽  
J. L. Smilanick ◽  
D. A. Margosan ◽  
M. F. Mansour ◽  
G. Romanazzi ◽  
...  
Keyword(s):  
Gray Mold ◽  
Potassium Sorbate ◽  
Thompson Seedless ◽  
Berry Skin ◽  
Grape Berries ◽  
Table Grapes ◽  
Berry Quality ◽  
Seedless Grape ◽  
And Storage ◽  
Natural Incidence

Potassium sorbate, a program of four fungicides, or one of three chitosan formulations were applied to clusters of ‘Thompson Seedless’ grape berries at berry set, pre-bunch closure, veraison, and 2 or 3 weeks before harvest. After storage at 2°C for 6 weeks, the natural incidence of postharvest gray mold was reduced by potassium sorbate, the fungicide program, or both together in a tank mixture, in 2009 and 2010. In 2011, the experiment was repeated with three chitosan products (OII-YS, Chito Plant, and Armour-Zen) added. Chitosan or fungicide treatments significantly reduced the natural incidence of postharvest gray mold among grape berries. Berries harvested from vines treated by two of the chitosan treatments or the fungicide program had fewer infections after inoculation with Botrytis cinerea conidia. None harmed berry quality and all increased endochitinase activity. Chitosan decreased berry hydrogen peroxide content. One of the chitosan formulations increased quercetin, myricetin, and resveratrol content of the berry skin. In another experiment, ‘Princess Seedless’ grape treated with one of several fungicides before 4 or 6 weeks of cold storage had less decay than the control. Fenhexamid was markedly superior to the other fungicides for control of both the incidence and spread of gray mold during storage.

Sign in / Sign up

Export Citation Format

Share Document