Dataset of Nitrogen Fixation Related Traits of Cowpeas in Low Phosphorus Soils of Cameroon.

The use of morphological attributes have traditionally been used to establish phylogenetic relationships among genotypes between and within species and for various other purposes including identification of duplicates, studies of genetic variation patterns, and correlation of characteristics of agronomic importance. Therefore characterizing cowpea genotypes is an important step in conserving biodiversity and facilitating breeding. A pot experiment was used to characterize 50 cowpea (Vigna unguiculata ) genotypes in the screen house at Nkolbisson IITA, Cameroon. These genotypes were collected in 2012 from various sources: the International Institute of Tropical Agriculture (IITA), Senegalese Agricultural Research Institute (ISRA), University of California, Riverside (UCR); and one genotype evaluated previously at the study site (Danilla) in Cameroon. Soil samples were analyzed for pH, organic C, N, exchangeable Ca, Mg, K, and extractable P. Data was collected for 20 morphological traits related to grain yields, nitrogen fixation and plant growth.

Research domain: Plant Breeding

Research question: How related are the cowpeas grown in Cameroon based on amount of nitrogen fixed and grain yield?.