论文部分内容阅读
用改良刮制法观测了典型粳稻品种秋光剑叶、叶鞘、穗颈及颖壳的气孔分布情况，结果表明：剑叶背面气孔分布有一定规律性，但此规律性常因气孔行的突然中断被削弱。剑叶背面气孔密度纵向变化呈偏态分布，叶中部气孔密度大于叶基又大于叶尖部；叶中部气孔长度最小，气孔宽度最大。剑叶背面横向气孔密度呈中部最大的正态分布，气孔大小变化不大。叶片边缘气孔行不分组。本研究还发现，中脉和叶鞘上亦有气孔分布，而且中脉上的气孔密度在所测各器官中最大，叶鞘上的气孔密度约为剑叶背面气孔密度的1／3左右。穗颈上有少量气孔分布。
The stomatal distribution of leaves, leaf sheaths, panicles and glume of typical japonica rice varieties was observed by the modified scraping method. The results showed that the stomatal distribution on the back of the flag leaves was regular, but this regularity was often caused by sudden interruption of stomatal lines Weakened. The longitudinal changes of the stomatal density on the back of the flag leaves were skewed. The stomatal density in the middle part of the leaf was larger than the leaf base and larger than the tip part. The stomatal length in the middle part of the leaf was the smallest and the stomatal width was the largest. The transverse stomatal density at the back of the flag leaves showed the largest normal distribution in the middle, and the stomatal size did not change much. Blade edge stoma rows are not grouped. The study also found that there are stomatal distribution in the midrib and leaf sheath, and stomatal density in the midrib is the largest in the measured organs stomatal density on the leaf sheath about the back of the flag leaf stoma density about 1/3. Neck a small amount of stomatal distribution.