Plant Production Science
Online ISSN : 1349-1008
Print ISSN : 1343-943X
Crop Morphology
Endosperm Structure of White-Belly and White-Core Rice Grains Shown by Scanning Electron Microscopy
Min XiZhaomiao LinXincheng ZhangZhenghui LiuGanghua LiQiangsheng WangShaohua WangYanfeng Ding
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2014 Volume 17 Issue 4 Pages 285-290


White-belly and white-core are the major two types of grain chalkiness in japonica rice. This study aims to compare the morphological features of white-belly and white-core using a scanning electron microcope (SEM). A japonica rice cultivar Wuyujing3 and its mutants were used as materials. Nearly 1000 SEM images were observed, and 12 representative photos were selected. SEM images showed contrasting differences between white-belly and white-core in endosperm microstructure including the shape of endosperm cell, the size distribution of starch granules, and the amount of protein bodies. White-belly and white-core also varied markedly in morphological features of the cracked compound starch granules. Our findings should help to advance our understanding of the multi-faceted nature of grain chalkiness from the perspective of starch and protein accumulation, and should be of value for future work on rice grain chalkiness.

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© 2014 by The Crop Science Society of Japan
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