The Patterns of Plant Structures in Maize

  • Walton C. Galinat
Part of the Springer Lab Manuals book series (SLM)

Abstract

The most spectacular transformations of morphogenesis in maize occur at phase change when the vegetative phenotypes suddenly switch into floral ones. Less dramatic changes develop as secondary sex traits when the male or tassel and female or ear phenotypes diverge from a common primordial type of inflorescence. The differences between the juvenile and adult vegetative stages are even less striking in appearance but they also depend on some system of molecular switching. Recognition of the vegetative-floral homologies is essential to understanding how a framework of differential genetic activities regulates and synchronizes repetitious and reversible patterns of growth that result in structures of incredible beauty that delicately adapt to carry out the functions of intercepting solar radiation in the vegetative phase and the functions of sexual reproduction in the floral phase—all within a certain external environment. Once the structures of the inflorescenses are completed, the controlling genes must reverse epimutate at, or soon after, sexual reproduction so that the developmental clock can be reset for the cycle of the next generation.

Keywords

Maize Hydrate Straw Tempo 

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References

  1. Galinat WC (1959) The phytomer in relation to floral homologies in the American Maydeae. Bot Mus Leafl, Harvard University 19: 1–32Google Scholar
  2. Galinat WC (1963) Form and function of plant structures in the American Maydeae and their significance for breeding. Econ Bot 17: 51–59CrossRefGoogle Scholar
  3. Galinat WC (1990) Increased transmission of full vegetative multiranking through pollen from the central spike of the tassel in comparison with pollen from the lateral branches. Maize Genetics Cooperation Newsletter 64: 120Google Scholar
  4. Greyson RI, Waiden DB, Hume JA (1978) The ABPHYL syndrome in Zea mays. II. Patterns of leaf initiation and the shape of the shoot meristem. Can J Bot 56: 1545–1550CrossRefGoogle Scholar
  5. Sheridan WF (1988) Maize developmental genetics: genes of morphogenesis. Annu Rev Genet 22: 353–385PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag New York, Inc. 1994

Authors and Affiliations

  • Walton C. Galinat

There are no affiliations available

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