Abstract
Starches of the opaque-2, sugary-2, opaque-2, and waxy opaque-2 endosperm mutants of two broad-based synthetic cultivars (Temp HA and Temp HB) of maize adapted to the more temperate areas of the world are, in general, similar to the respective starches of inbred maize background with regard to amylose percentage and the distribution of linear alpha-D-(1 leads to 4) linked unit-chains of amylopectin, starch-granule susceptibility to amylases, and properties examined by X-ray diffractometry and photopastegraphy. Changes in starch content and morphology of starch granules by scanning electron microscopy in dissected endosperms of the two broad-based synthetic maize cultivars following germination 0, 2, 4 and 6 days after planting were also investigated.
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