Effects of Selenium Treatments on Potato (Solanum tuberosum L.) Growth and Concentrations of Soluble Sugars and Starch

The effect of selenium (Se) treatments on potato growth and Se, soluble sugar, and starch accumulation was investigated. Potato plants were cultivated in quartz sand without or with sodium selenate (0, 0.075, 0.3 mg Se kg-1 sand). In young potato plants, Se treatment resulted in higher starch concen...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2004-08, Vol.52 (17), p.5378-5382
Main Authors: Turakainen, Marja, Hartikainen, Helinä, Seppänen, Mervi M
Format: Article
Language:English
Subjects:
Biological and medical sciences
carbohydrate composition
Carbohydrates - analysis
crop yield
Dose-Response Relationship, Drug
fertilizer application
Food industries
Fruit and vegetable industries
Fundamental and applied biological sciences. Psychology
leaves
mineral content
plant development
plant growth
Plant Leaves - growth & development
Plant Roots - growth & development
Plant Tubers - chemistry
Plant Tubers - growth & development
potatoes
roots
Selenic Acid
selenium
Selenium - administration & dosage
Selenium - analysis
Selenium Compounds - administration & dosage
selenium fertilizers
sodium selenate
Solanum tuberosum
Solanum tuberosum - chemistry
Solanum tuberosum - drug effects
Solanum tuberosum - growth & development
soluble sugars
starch
Starch - analysis
Starch and starchy product industries
stolons
sugar content
trace element fertilizers
tubers
vegetable crops
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Summary:The effect of selenium (Se) treatments on potato growth and Se, soluble sugar, and starch accumulation was investigated. Potato plants were cultivated in quartz sand without or with sodium selenate (0, 0.075, 0.3 mg Se kg-1 sand). In young potato plants, Se treatment resulted in higher starch concentrations in upper leaves. The tuber yield of Se-treated potato plants was higher and composed of relatively few but large tubers. At harvest, the starch concentration in tubers did not differ significantly between treatments. The higher Se addition (0.3 mg Se kg-1) may have delayed the aging of stolons and roots, which was observed as high concentrations of soluble sugar and starch. Together with the earlier results showing elevated starch concentration in Se-treated lettuce, the findings of this research justify the conclusion that Se has positive effects also on potato carbohydrate accumulation and possibly on yield formation. Keywords: Potato tuber; roots; selenium; soluble sugars; starch; stolons; upper leaves
ISSN:0021-8561
1520-5118
DOI:10.1021/jf040077x