Samaranayake P.Rupatunga, K.W.Fernando, D.M.Jayasekera, N.E.M.2013-05-082013-05-081979Journal of the Rubber Research Institute of Sri Lanka56pp.29-33https://dl-rri.nsf.gov.lk/handle/1/1495In vitro germination of pollen and pollen tube growth of hevea brasiliensis in the presence of calcium and boronA