The seed and seedling physiology of ten genotypes of cowpea were studied among high and low yielders. The germination per cent, field emergence, water absorption and vigour index were positively correlated with high yielding potential of cowpea genotypes. The genotypes with low yielding potential showed negative relationship with the above parameters. The EC of seed leachates showed a negative relationship with high yielders Seed leachates contained more of sugars and free amino acids in low yielding genotypes. The EC of seed leachate and vigour index may be used as selection criteria for higher yield in the case of cowpes genotypes
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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