韧皮组织 meaning in English

phloem tissue

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。