1. Avery GS (1930) Comparative anatomy and morphology of embryos and seedlings of maize, oats and wheat. Botanical Gazette 89: 1–39
2. Erickson RO, Sax KB (1956) Elemental growth rate of the primary root of Zea mays. Proc Am Philosoph Soc 100: 487–514
3. Foth HD, Kinra KL, Pratt JN (1960) Corn root development. Michigan Agr Exp Quart Bull 43: 2–13
4. Hayward HE (1938) The Structure of Economic Plants, The Macmillan Co., New York
5. Luxova M (1981) Growth region of the primary root of maize (Zea mays L.). In Brouwer R, Gasparikova O, Kolek J, Loughman BC (eds) Structure and Function of Plant Roots, Martinus Nijhoff/Dr W. Junk Publishers, The Hague, 9–14