Estimates of pod length heritability and efficiency of selection at early generation as a tool for developing a new cowpea (Vigna unguiculata (L.) Walp) cultivars under drought stress. Sci. J. Crop Sci. [Internet]. 2016Jan.19 [cited 2024Nov.22];5(1):60-5. Available from: http://sjournals.com/index.php/sjcs/article/view/335