中文摘要：

为了查明小麦胚乳淀粉粒是单粒淀粉还是复粒淀粉，利用电子显微镜技术系统观察了小麦胚乳发育过程中淀粉粒的发育过程。结果表明，大淀粉粒在胚乳发育早期发生与发育，包含大淀粉粒的淀粉体通过缢缩进行增殖，每个淀粉体只包含一个大淀粉粒；小淀粉粒在胚乳发育的中、后期发生与发育，包含大淀粉粒的淀粉体被膜向细胞基质突起，出芽产生许多淀粉体，小淀粉粒在这些淀粉体内发生与发育；包含小淀粉粒的淀粉体也可以通过缢缩或被膜外突出芽产生新淀粉体，用来形成小淀粉粒；多个小淀粉粒可以同时在一个淀粉体内发生与发育；当淀粉体被淀粉粒所充满，淀粉体被膜降解消失，释放淀粉粒到细胞基质中。上述结果表明，小麦胚乳大淀粉粒为单粒淀粉，而小淀粉粒为复粒淀粉。

英文摘要：

In order to investigate whether starch granules of wheat endosperm were single starch granules or compound starch granules,which would be helpful to cultivate new wheat variety,the development of starch granule was observed using electron microscopy during wheat endosperm development.The results showed that large starch granules formed and developed at the young stage of endosperm development.Amyloplast with large starch granules could produce new amyloplast by the way of constricting.One amyloplast had only one large starch granule.Small starch granules could form and develop at the middle and late stage of endosperm development.Many amyloplasts which would produce small starch granules came from the envelope protrusion of amyloplast with large starch granules.Amyloplasts with small starch granules could also form new amyloplasts to produce small starch granules by the way of constricting and protruding of their envelopes.Many small starch granules could form and develop in one amyloplast.The amyloplast envelope began to degrade and released starch granules into cell matrix when amyloplast was full of starch granules.The above results showed that large starch granules were single starch granules and small starch granules were compound starch granules in wheat endosperm.