Genetic variation in physiological seed quality of some selected cowpea genotypes
Paper Details
Genetic variation in physiological seed quality of some selected cowpea genotypes
Abstract
The study was conducted using fifteen cowpea genotypes evaluated for their physiological seed quality attributes using viability and vigour tests. The laboratory experiments were set-up in a complete randomized design with three replicates at the seed quality control unit of the Institute of Agricultural Research and Training, Ibadan, Oyo State. Data collected were subjected to analysis of variance. Treatment means separated using Duncan Multiple Range Test at 5% level of probability. Results showed that variability was smaller in cowpea accessions as compared with local and improved genotypes, except root length and shoot length. Hundred seed weight ranged from 12.84-21.14, 9.90-31.44 and 12.14-15.33, SG ranged from 22.00-94.00, 72.00-100 and 46.00-96.00 and SGI (DAS) ranged from 2.43-15.45, 2.57-4.04 and 2.53-5.52 in landrace, accession and improved cowpea genotypes, respectively. Accelerated ageing germination percentage also ranged from 46.0-86.00, 64.00-82.00 and 24.00-78.00, conductivity inµS/cm/g ranged from 7.34-28.89, 6.33-19.49 and 12.10- 29.72 and SVI ranged from 7.48-35.91, 20.99-41.65 and 14.12-39.74 in local, accession and improved cowpea genotypes, respectively. Marked differences were detected among genotypes for all the characters measured under local, accession and improved cowpea. Abewere was identified in this study to have high values for most germination and vigour parameters with good combination of most traits and is highly recommended for use in future breeding programs.
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