Impact of Variable Potassium on Metabolism, Oil, and Seed Quality of Groundnut

To study the impact of variable potassium (K) on biomass, economic yield, and role of K in groundnut (Arachis hypogeae L.) metabolism, plants were grown in refined sand at different levels of K, ranging from 0.5 to 16 mM. The concentration of K increased with increase in supply in all parts of groun...

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Bibliographic Details
Published in:Communications in Soil Science and Plant Analysis 2012-10, Vol.43 (19), p.2504-2511
Main Author: Gopal, Rajeev
Format: Article
Language:English
Subjects:
acid phosphatase
adenosinetriphosphatase
Agronomy. Soil science and plant productions
Arachis
Arachis hypogeae
Biological and medical sciences
chlorophyll
Fundamental and applied biological sciences. Psychology
leaves
Metabolism
oil content
peanuts
peroxidase
potassium
sand
seed quality
Seeds
starch
sugars
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Summary:To study the impact of variable potassium (K) on biomass, economic yield, and role of K in groundnut (Arachis hypogeae L.) metabolism, plants were grown in refined sand at different levels of K, ranging from 0.5 to 16 mM. The concentration of K increased with increase in supply in all parts of groundnut. Both low (4 mM) K increased the activity of peroxidase, ATPase, and acid phosphatase and decreased the concentration of chlorophyll in leaves significantly. Low (4 mM) concentrations of K inhibited pod and kernel (seed) formation in groundnut. Potassium stress (both low and excess) deteriorated the quality of groundnut seed by decreasing the concentrations of starch, protein, and oil and increasing that of sugars in seeds. The activities of certain enzymes also altered in K stress in leaves and seeds of groundnut.
ISSN:1532-2416
0010-3624
1532-2416
1532-4133
DOI:10.1080/00103624.2012.711873