Conclusion
In this study four maize varieties were examined for starch
granule size distribution and arrangement within the grains
using a laser diffraction grain size analyzer, transmission
electron, and scanning electron microscopies. The distribution
of starch granule volume formed a triple humped curve in
which granules with a diameter of less than 2 μm were
abundant, while greater than 15 μm were most prevalent.
Starch granule arrangement was different in four maize
varieties. Starch granule development is from the inside out.
Grain weight and starch content were significantly correlated
(0.649*
, 0.764*
) with volume percentage in granules from 2-15
μm predominating.We could infer grain weight and starch
content of maize through the arrangement and size of starch
granules. After pollination 15-20d is a critical period of corn
starch granule formation, we should strengthen the
management of fertilizer and water to get high yield.