Journal of Stress Physiology &
Biochemistry, Vol. 9 No. 4
2013, pp. 73-84 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Gogile, Andargie,
Muthuswamy
ORIGINAL ARTICLE
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QueryDate : 2016-12-24
Cites : 1
The Response of Some Cowpea (Vigna unguiculata L. Walp.)
Genotypes for Salt Stress during Germination and Seedling Stage
Ashebir Gogile, Mebeasilassie
Andargie* and Manikanidan Muthuswamy
Biology Department, College of Natural and
Computational Sciences (CNCS), Haramaya University, P.O. Box: 138, Dire
Dawa, Ethiopia
Salinity is one of the most
significant abiotic factors affecting growth and yield of cowpea in
arid and semi-arid areas of the world. Nineteen cowpea (Vigna unguiculata) genotypes were
tested during germination and seedling stages of growth at 4 NaCl
concentrations (0, 50, 100 and 200mM). The experimental design was
completely randomized design (CRD) in factorial combination with three
replications. Data analysis was carried out using SAS (version 9.1)
statistical software. Germination percentage
(GP), seedling shoot and root
traits were evaluated. The analyzed data revealed highly
significant (p<0.001) variation among cowpea genotypes, treatments
and their interactions. It is found that salt stress significantly
decreased root length and shoot length.
The extent of decrease varied with
accessions and salt concentrations. Most
accessions were highly susceptible to
200 mM NaCl concentration. Genotypes 211557 and
Asebot were better salt tolerant. The result showed the presence of
broad intraspecific genetic variation in cowpea genotypes for salt
tolerance.
