缺硼对向日葵叶组织及花粉结构的影响  

EFFECT OF BORON DEFICIENCY ON LEAF AND POLLEN STRUCTURE OF SUNFLOWER

作　　者：魏文学[1] 王运华[1] 孙香枝 

机构地区：[1]华中农业大学土化系,武汉430070

出　　处：《华中农业大学学报》1993年第5期464-467,共4页Journal of Huazhong Agricultural University

摘　　要：生长在缺硼环境中向日葵的组织结构发生了很大的变化,叶表细胞排列紊乱,气孔组织严重变形,腺毛塌陷萎缩,难以行使对叶的保护功能。缺硼使叶片增厚,叶肉细胞变大,同时叶肉细胞中的颗粒状叶绿体呈分散状态。缺硼导致叶柄和叶脉的维管束受到很大破坏,维管束内的细胞变形,排列混乱,韧皮部细胞组织变形严重且无规律排列,木质部导管小,导管周围的细胞或是变形或是有大量的淀积物存在,由于输导组织的破坏和变形必然引起物质转运不正常。缺硼还导致花粉粒发育异常,从而影响结实。Specific Symptoms of boron dcficiency in sunflower appear as some deformations of leaves and pollen. The results showed that when boron was deficient, sunflower leaf stomaes abnomally changed and the glands on the leaf cracked and wrinkled. The chloroplasts detached from the cell wall. Boron deficiency also led to the cells of vascala bundle arranging in disorder and its vessels and phloem deforming. Pollens were significantly affected by B deficiency.

关 键 词：硼缺乏 向日葵 花粉 维管束 

分 类 号：S436.655[农业科学—农业昆虫与害虫防治]