Pollen viability, pollen germination and pollen tube growth in the biofuel seed crop Jatropha curcas (Euphorbiaceae) Abdelgadir, H. A. ; Johnson, S. D. ; Van Staden, J. Abstract Publication: South African Journal of Botany Pub Date: March 2012 DOI: 10.1016/j.sajb.2011.10.005 Bibcode: 2012SAJB...79..132A