4Bailey D M,Bailey R M.The relation of the pericarp to tenderness in sweet com[J].Proc.Amer.Soc.Hort.Sci.,1938,36:556-558.
5Schmidt D H,Tracy W F.Effects of starchy sugary-2 and sugary sugary-2 endosperm on pericarp thickness in sweet and waxy com[J].Hort.Science,1998,23(5):885-886.