Association of viral, bacterial and fungal pathogens with vascular discoloration of Russet Burbank potato tubers

1983 ◽  
Vol 60 (4) ◽  
pp. 235-243 ◽  
Author(s):  
R. G. Clarke ◽  
M. L. Powelson ◽  
L. Beraha
Keyword(s):  
Fungal Pathogens ◽  
Russet Burbank Potato ◽  
Russet Burbank ◽  
Potato Tubers ◽  
Vascular Discoloration

CITRIC ACID AND POTASSIUM CONTENTS OF RUSSET BURBANK POTATO IN ALBERTA

1985 ◽  
Vol 65 (3) ◽  
pp. 793-795 ◽  
Author(s):  
D. R. LYNCH ◽  
M. S. KALDY
Keyword(s):  
Citric Acid ◽  
Chlorogenic Acid ◽  
Acid Content ◽  
Russet Burbank Potato ◽  
Russet Burbank ◽  
Potassium Content ◽  
Potato Tubers ◽  
Acid Ratio ◽  
Southern Alberta ◽  
Production Areas

Citric acid and potassium contents were determined for Russet Burbank tubers collected from the major production areas in Alberta. An increase in the ratio of citric to chlorogenic acid content is known to be associated with a decrease in the tendency for potato tubers to darken after cooking. Tuber citric acid and potassium contents were higher in southerly locations than in central locations. The trend for citric acid is the reverse of that for chlorogenic acid established in a previous study. Thus, potatoes grown at southern Alberta locations have a higher citric to chlorogenic acid ratio than those grown in central locations, suggesting that they would be less subject to after-cooking darkening.Key words: Darkening (after-cooking), citric acid, chlorogenic acid, potassium content, Russet Burbank, potato

scholarly journals Diffusivity of Carbon Dioxide through the Skin and Flesh of `Russet Burbank' Potato Tubers

1994 ◽  
Vol 119 (4) ◽  
pp. 742-746 ◽  
Author(s):  
Aref A. Abdul-Baki ◽  
Theophanes Solomos
Keyword(s):  
Diffusion Coefficient ◽  
Russet Burbank Potato ◽  
Storage Conditions ◽  
Gas Diffusion ◽  
Russet Burbank ◽  
Aerobic Respiration ◽  
Potato Tubers ◽  
Average Diffusion Coefficient ◽  
Average Diffusion ◽  
Main Barrier

The diffusion coefficient of CO2 in `Russet Burbank' potato (Solanum tuberosum L.) tubers was determined under steady-state conditions at 10 and 27C. The data showed that the skin is the main barrier to gas diffusion, with an average diffusion coefficient of 6.57 × 10-7 and 7.61 × 10-7 cm·s-1 at 10 and 27C, respectively. The flesh also presents an appreciable barrier to gas diffusion. The average diffusion coefficient of CO2 in the flesh was 2.00 × 10-4 and 2.24 × 10-4 cm·s-1 at 10 and 27C, respectively. Under regular storage conditions, the tuber is well aerated and the concentration of O2 at the center of the tuber is sufficient to maintain aerobic respiration.

The Impact of Retail Light Source on Greening of Russet Burbank Potato Tubers

2017 ◽  
Vol 95 (2) ◽  
pp. 123-129 ◽  
Author(s):  
Nora L. Olsen ◽  
Tina Brandt ◽  
William J. Price
Keyword(s):  
Light Source ◽  
Russet Burbank Potato ◽  
Russet Burbank ◽  
Potato Tubers ◽  
The Impact

scholarly journals Apical and Distal Pieces of Aged Potato Tubers Respond Differently to Paclobutrazol

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 853G-854
Author(s):  
George H. Timm ◽  
Loretta J. Mikitzel
Keyword(s):  
Solanum Tuberosum ◽  
Russet Burbank Potato ◽  
Russet Burbank ◽  
Equal Weight ◽  
Distilled Water ◽  
Potato Tubers ◽  
Water Control ◽  
Ga Content

The influence of paclobutrazol, an inhibitor of GA synthesis, on kindertuber formation was studied using 13.5-month-old `Russet Burbank' potato (Solanum tuberosum) tubers. Suberized apical and distal tuber pieces of equal weight were sprayed daily with distilled water (control), 0.001 and 0.01 mg paclobutrazol/liter with or without 2.5 mg kinetin/liter, and 2.5 mg kinetin/liter alone. The tuber pieces were held in the dark (20C) and harvested 8, 16, and 22 days after the first treatment. Only sprouts developed from control apical piece eyes after 22 days. There was an average of 3.6 sprouts/eye, which, in total, weighed 735 mg. Sprouts (2.4/eye) from treated apical piece eyes averaged 46 mg. By 22 days, 0.001 mg paclobutrazol/liter plus kinetin applied to apical pieces resulted in the most kindertubers, 1.9/eye. The largest kindertubers (1.2 g) were produced from apical pieces treated with 0.001 mg paclobutrazol/liter. At each harvest and regardless of treatment, distal tuber pieces produced larger sprouts and more sprouts per eye than apical pieces. Kindertubers developed from distal piece eyes only with the paclobutrazol plus kinetin treatments. Distal eyes produced half as many kindertubers as apical eyes treated similarly. Apical pieces treated with kinetin alone produced fewer sprouts than control pieces, and fewer tubers than paclobutrazol-treated pieces. Sprout weight per eye of kinetin-treated apical pieces was one-third that produced by control pieces and 5.1-fold greater than that of paclobutrazol-treated pieces. A similar trend was observed with sprout weight from distal eyes. Results suggest lowered GA levels are involved in kindertuber formation on aged potato tubers, and GA content or metabolism of distal pieces is unlike that of apical pieces. Distal tuber pieces do not form kindertubers as readily as apical pieces.

scholarly journals Trichothecene Mycotoxins Associated with Potato Dry Rot Caused by Fusarium graminearum

2010 ◽  
Vol 100 (3) ◽  
pp. 290-296 ◽  
Author(s):  
Javier A. Delgado ◽  
Paul B. Schwarz ◽  
James Gillespie ◽  
Viviana V. Rivera-Varas ◽  
Gary A. Secor
Keyword(s):  
Fusarium Graminearum ◽  
Russet Burbank Potato ◽  
The United States ◽  
Russet Burbank ◽  
Surrounding Tissue ◽  
Potato Tubers ◽  
Potato Tissue ◽  
Dry Rot ◽  
And Diffusion ◽  
Storage Temperatures

Fusarium graminearum, a known producer of trichothecene mycotoxins in cereal hosts, has been recently documented as a cause of dry rot of potato tubers in the United States. Due to the uncertainty of trichothecene production in these tubers, a study was conducted to determine the accumulation and diffusion of trichothecenes in potato tubers affected with dry rot caused by F. graminearum. Potato tubers of cv. Russet Burbank were inoculated with 14 F. graminearum isolates from potato, sugar beet, and wheat and incubated at 10 to 12°C for 5 weeks to determine accumulation of trichothecenes in potato tubers during storage. Twelve of the isolates were classified as deoxynivalenol (DON) genotype and two isolates were as nivalenol (NIV) genotype. Trichothecenes were detected only in rotted tissue. DON was detected in all F. graminearum DON genotype isolates up to 39.68 μg/ml in rotted potato tissue. Similarly, both NIV genotype isolates accumulated NIV in rotted potato tissue up to 18.28 μg/ml. Interestingly, isolates classified as genotype DON accumulated both DON and NIV in the dry rot lesion. Potato tubers were then inoculated with two isolates of F. graminearum chemotype DON and incubated up to 7 weeks at 10 to 12°C and assayed for DON diffusion. F. graminearum was recovered from >53% of the isolations from inoculated tubers at 3 cm distal to the rotted tissue after 7 weeks of incubation but DON was not detected in the surrounding tissue. Based in this data, the accumulation of trichothecenes in the asymptomatic tissue surrounding dry rot lesions caused by F. graminearum is minimal in cv. Russet Burbank potato tubers stored for 7 weeks at customary processing storage temperatures.

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