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Genetic Control of Starch Granule Morphology and Physical Structure in Developing Maize Endosperms 1
Author(s) -
Brown Richard P.,
Creech Roy G.,
Johnson Leon J.
Publication year - 1971
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1971.0011183x001100020040x
Subject(s) - granule (geology) , starch , biology , pollination , botany , biochemistry , pollen , paleontology
Summary Maize ( Zea mays L .) starch granules in endosperms of 24 genotypes were studied during kernel development at 12, 18, and 24 days post pollination. Maximum and minimum granule dimensions, granule shapes expressed as the ratio of maximum to minimum granule dimensions, and differences in physical structure as measured by birefringence end‐point temperature (BEPT), X‐ray diffraction analyses, and infrared absorption spectra were determined. Mutant starch granule formation at 12 days after pollination was not different from normal for granule dimensions, granule shapes, and BEPT. Differences from normal were apparent for 18‐ and 24‐day granules for all factors studied except infrared absorption.