Effect of Drought and Temperature Stress on Peanut (Arachis hypogaea L.) Seed Composition

Musingo, M.N. and Basha, S.M. and Sanders, T.H. and Cole, R.J. and Blankenship, P.D. (1989) Effect of Drought and Temperature Stress on Peanut (Arachis hypogaea L.) Seed Composition. Journal of Plant Physiology, 134 (6). pp. 710-715.

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Abstract

Groundnut cv. Florunner plants were subjected to drought and high temp. stress (28-30°C) for periods of 20, 30, 40 or 50 d, and the seeds from these plants were separated into Jumbo, Medium and No. 1 market size categories and analysed for soluble and total carbohydrate, α-amino N, total protein and oil content. The results showed that seed soluble and total carbohydrate content increased due to drought and temp. stress, with Jumbo and Medium market categories showing the highest increase. The α-amino N content of the Jumbo market category decreased while that of the No. 1 market category increased following a 30-d stress exposure. Protein and oil content of all the market categories were not affected after exposure to drought and temp. stress. The protein and polypeptide profiles showed that a polypeptide with a MW of 70 000 and a pI between 6.2 and 7.0 increased with increasing periods of drought and temp. stress. It is suggested that drought and temp. stresses increase accumulation and/or synthesis of carbohydrates and certain polypeptides may thus enhance Aspergillus invasion and aflatoxin production

Item Type: Article
Additional Information: SNNigam collections
Author Affiliation: Peanut Research Laboratory, Division of Agricultural Sciences, Florida A&M University, Tallahassee, FL 32307, USA.
Subjects: Crop Improvement
Plant Physiology and Biochemistry > Biochemistry
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 18 Jul 2013 12:47
Last Modified: 18 Jul 2013 12:47
Official URL: http://dx.doi.org/10.1016/S0176-1617(89)80032-X
URI: http://eprints.icrisat.ac.in/id/eprint/11148

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