Research Article | Published: 01 December 1999

Allelopathic Evaluation of Tectona Grandis Leaf, Root and Soil Aqueous extracts on Soybean

Sadhna Tripathi, Ashutosh K. Tripathi and D. C. Kori

Indian Journal of Forestry | Volume: 22 | Issue: 4 | Page No. 366-374 | 1999
DOI: https://doi.org/10.54207/bsmps1000-1999-7Y2EUA | Cite this article

Abstract

Allelopathic activity of Tectona grandis was studied in bioassays on germination, seedling growth, nodulation, chemical and biochemical parameters on soybean. Leaf, root and soil extracts of teak exhibited stimulatory effect on peroxidase activity, nodulation and protein in soybean seeds. Root extract enhanced enzymatic activity up to 39 fold over control followed by leaf and soil extracts. Leaf extract increased nodulation up to 19% followed by soil and root extracts. Maximum increase 37% in seed protein was observed by leaf extract followed by root and soil extracts. Soil and root extracts have stimulated synthesis of chlorophyll ‘a’, chlorophyll ‘b’, protein and amino acid, while inhibited carbohydrate and ascorbic acid content in soybean leaves. Shoot length, radicle length and germination were also increased by soil and root extracts.

Nitrogen application with all extracts has adversely affected carbohydrate, ascorbic acid, germination, plumule and radicle length, while promoted peroxidase, amino acids, shoot length and seed protein. All extracts without nitrogen have promoted nodulation.

Polyphenols and glycosides were present in all extracts and their concentration was in the order root > leaf > soil, while stimulatory activity was in the order soil > leaf > root. High Performance Liquid Chromatography revealed the presence of 4 phenolic acids in leaf, 6 in root and 6 in soil extracts.

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How to cite

Tripathi, S., Tripathi, A.K. and Kori, D.C., 1999. Allelopathic Evaluation of Tectona Grandis Leaf, Root and Soil Aqueous extracts on Soybean. Indian Journal of Forestry, 22(4), pp.366-374. https://doi.org/10.54207/bsmps1000-1999-7Y2EUA

Publication History

Manuscript Published on 01 December 1999

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