Hayward, M.D.Manthriratna, M.A.P.2014-06-032014-06-031972Ceylon Coconut Planters' Review, 67:p.131-144https://dl-cri.nsf.gov.lk//handle/1/2984GeneticsPollen growthLolium sp.Fertility studiesPollen development and variation in the genus Lolium. 1:pollensize and tapetal relationships in male fertiles and male steriles