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Effect of Phosphorus Deficiency on Carbohydrate Metabolism of Mentha arvensis (1968)

Singh, J. N. ; Singh, D. P.

Oxford, UK : Blackwell Publishing Ltd

Physiologia plantarum 21 (1968), S. 0

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ISSN: 1399-3054

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Biology

Notes: The effects of phosphorus deficiency on carbohydrate fractions of Mentha arvensis L. var. piperascens were studied. Mint plants were grown in sand cultures under full nutrition and phosphorus deficiency conditions. Component organs, viz., leaf, stem and root, were sampled at four different stages of the growth cycle and analysed for various sugar fractions.In leaf and root phosphorus deficiency brought about a definite increase in all sugar fractions whereas in stem a reduction was noticed. The stem appeared to be the principal storage organ throughout the growth. Maximum sugar concentration was recorded at the age of 70 days, which represents the full maturity stage, and coincided with maximum essential oil accumulation.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1399-3054.1968.tb07368.x

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Studies in the mineral nutrition of Japanese mint (1968)

Singh, J. N. ; Singh, D. P.

Springer

Plant and soil 28 (1968), S. 363-371

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ISSN: 1573-5036

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Summary This paper presents the results of an experimental enquiry into the effects of phosphorus deficiency and age on the nitrogen metabolism in component parts of mint plants (Mentha arvensis var.piperascens). Estimation of various nitrogenous fractions i.e. ammoniacal, nitrate, amide, ‘rest’, total soluble, total insoluble and total nitrogen were made in leaf, stem and root of mint plants, collected from full-nutrient and phosphorus-deficient cultures, at subsequent stages of the life cycle. The outstanding effect of phosphorus deficiency was noted: an increased accumulation of amides resulting in poor formation of proteins which suggested interference in protein synthesis beyond amide stage. Leaf showed maximum percentage of nitrogen in the insoluble form. The stem served as channel for transport and storage and invariably showed high concentration of soluble nitrogen fractions.