Round , smooth nuclear surface , and uniform nuclear pore changed into bumping surface and expanding nuclear pore , then the nuclei broken and disappeared ; 2 ) the degenerate and disappear of cell organelle and senescence of the flag leaf were obviously faster during the ripe of grain ; 3 ) the degenerate and senescence of chloroplast was faster than that of mitochondria ; 4 ) the nuclear of leaf cells broken and disappeared faster than that of the leaf bumdles 即核呈球形，表面光滑，核孔匀称核表面凸凹，部分核孔变大核膜破裂，核解体，消失； ( 2 )在籽粒成熟期小麦旗叶衰老及其细胞器退化消失明显加快； ( 3 )细胞中叶绿体的退化、消失比线粒体稍快； ( 4 )叶肉细胞的细胞核比维管束韧皮组织细胞核解体消失稍快。
Meanwhile , morphological characteristics of d . glomerata have significant relationships : those with upright and constrictive inflorescences have longer and narrower leaves , stronger stems , longer flag leaves , well - developed stamens and stronger seed reproductive capacity , whereas those with pendulous inflorescence have the opposite characteristics 2 )鸭茅植物形态学特征间存在明显相关性，花序直立、紧缩的鸭茅，叶片窄长，茎秆粗壮，旗叶较长，雄性生殖器官发育良好，结种性能强；而花序下垂、开展的鸭茅则与之相反。
The average values of the stomatal index in the non - leaf organs in ca cereals were smaller than those of leaves . blanke put forward a new physiological process in fruit , ' fruit photosynthesis ' , and featured with lower stomatal frequency ( blanke , 1989 ) . the results here also showed that the significant lower stomatal frequency on non - leaf organs , indicating that the new physiological process might exist in these organs of cereals as well 其中小麦芒和颖片有发育较好的叶绿体结构，其基粒数可达普通叶的水平，但比旗叶少；外稃和穗轴都有完整的基粒跺叠，只是跺叠的数量较少；而内稃基粒少，基粒内囊体跺叠不整齐。
Changes in chloroplast composition non - leaf organs have fewer and smaller chloroplasts than leaves . glumes and awns are organs directly exposed to light but they contain more grana per chloroplast , bigger granal stacks and more thylakoids per granal stacks and therefore their chloroplasts are more simi 4明显高于旗叶；若以放氧为标准，比较功能叶和非叶器官的光合活性，发现以叶绿素为单位，非叶器官的放氧速率与旗叶相当，或甚至高于旗叶；以单穗为单位，最高可相当于旗叶的28 。
