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作 者 ：金银根 葛才林

期 刊 ：西北植物学报 1999年 2期

关键词：水稻；小穗轴；维管网络结构；维管束走向；

Keywords:rice, rachilla, vascular network, trendency of VB,

摘 要 ：对籼型、粳型或其不育系与保持系代表品种小穗解剖观察表明：水稻小穗轴维管系统网络由中央维管束和各分枝维管束复合而成。来自小穗柄的１条大的中央主束和几条边围维管束经数次分枝、联结，不断产生新的分枝维管束进入相应的结构。一般颖片中维管束１－２条，第一稃片中１－３条，第二稃片中１－４条，第二朵退化小花残余结构中０－３条，顶生可孕小花的外稃中５条，内稃中３条，浆片中各２条，雄蕊中各１条，雌蕊中３条，主束与支

Abstract:Varcular networks in the rachilla of indica and japonica subsipecies were observed respectively.The results were as follows:the network consisted of a large VB (vascular bundle) in centre and a few small VBs (twigged VB) in a rachilla.Both they could deve

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