应用生态学报2012，Vol.23Issue(6)：1613-1619,7.
FACE条件下大气O3浓度增高对小麦花后剑叶显微结构的影响
Impacts of elevated atmospheric ozone concentration on flag leaf microscopic structure of wheat: A field study with FACE system
摘要
Abstract
By using FACE ( Free-Air Controlled Environment) -ozone system, a field plot experiment was conducted in 2008-2009 to study the effects of elevated ozone ( O3) concentration on the flag leaf microscopic structure, chlorophyll content, and grain weight of wheat. Two treatments were installed, i. e. , ambient O3 and 150% of ambient O3, and four winter varieties, i. e. , Yannong 19, Yangmai 16, Jiaxin002, and Yangfumai 2, were taken as the test materials. At anthesis, elevated O3 concentration had a slight damage to the flag leaf microscopic structure. The mesophyll cell and chloroplast structure began destroying, and the grana lamellae started breaking and loosing. Twenty-one days after anthesis, the differences in the leaf microscopic structure between the two treatments became significant. Under elevated O3, the flag leaf senescence was accelerated, with the endomembrane system disintegrated, grana lamella disappeared, and corpus adiposum inside chloroplast broken down, resulting in a significant decrease of the chlorophyll content, photosynthesis rate, and grain weight at maturing stage. Significant difference was observed among the test varieties in their responses to elevated O3. Jiaxin 002 was tolerant, while Yangfumai 2 was sensitive to the ozone stress.关键词
小麦/FACE/剑叶/显微结构/光合功能/粒重Key words
wheat/ FACE/ flag leaf/ microscopic structure/ photosynthesis/ grain weight分类
农业科技引用本文复制引用
朱新开,高春艳,张如标,李春燕,郭文善,朱建国,Kazuhiko KOBAYASHI..FACE条件下大气O3浓度增高对小麦花后剑叶显微结构的影响[J].应用生态学报,2012,23(6):1613-1619,7.基金项目
国家科技部国际科技合作计划项目(2009DFA31110)、国家自然科学基金项目(30971729)、中国科学院知识创新工程项目(KZCX2-EW-414)和江苏高校优势学科建设工程和江苏省"青蓝工程"基金项目资助. （2009DFA31110）
