华北农学报Issue(3)：95-100,6.
NaCl胁迫对棉花叶片及根系超微结构的影响
Effect of NaCl Stress on Ultrastructure of Mesophyll Cells and Root Cells in Cotton
摘要
Abstract
The ultrastructures of leaf and root in six cotton varieties under NaCl stress were studied using trans-mission electron microscope. The results showed that various organelles of mesophyll and root maintained morpholog-ical integrity under normal condition, while their ultrastructure changed under 0. 3% NaCl stress. In mesophyll cells,the chloroplasts of Zhong 50,N52,N203 and K-1 began deformed,with ambiguity in membrane and disorgani-zation in grana lamell. One part of chloroplasts was seriously destroyed. The arrangement of thylakoid was disorder-ed,loosened and twisted. Some of the thylakoid membrane disintegrated and cavitated gradually,even disappeared. The hungry particles increased significantly. In root cells,the numbers of mitochondrion increased and the membrane systems destroyed. The cristaes of mitochondrion were reduced and even vague. The cytoplasm segregated from the cell wall,and the lamellae of nucleolus and mitochondrion suffered disruption. Meanwhile,the chromatin was poly-merized and the cell nuclear was degraded. But the mid-maturing varieties N177 and N181 have been undamaged. The mitochondrion and the cell walls had been maintained morphological structure integrity completely. Comparative analysis indicated that the mid-maturing varieties N177 and N181 had anatomic adaptation to the salt stress. The a-bove results showed that the salt resistance of N177 and N181 was stronger than the other four varieties.关键词
棉花/NaCl胁迫/叶肉细胞/根系细胞/超微结构Key words
Cotton/NaCl stress/Mesophyll cells/Root cells/Ultrastructure分类
农业科技引用本文复制引用
姜艳丽,史华平,杨艳兵,尹晓斐,王计平..NaCl胁迫对棉花叶片及根系超微结构的影响[J].华北农学报,2014,(3):95-100,6.基金项目
国家转基因黄淮棉区转基因早熟棉新品种培育项目(2011ZX08005-002) （2011ZX08005-002）
