应用生态学报2012，Vol.23Issue(8)：2178-2184,7.
FACE条件下大气O3浓度增高对小麦剑叶光合色素含量的影响
Effects of elevated atmospheric ozone concentration on flag leaf photosynthetic pigment contents of wheat
摘要
Abstract
By using a free-air controlled enrichment (FACE) system, this paper studied the effects of elevated atmospheric ozone ( O3) concentration (150% of ambient O3) on the flag leaf photosynthetic pigment contents of wheat varieties Yannong 19, Yangmai 16, Jiaxin 002, Yangmai 15, and Yangfumai 2. For the test varieties, no significant differences were observed in the flag leaf chlorophyll a, chlorophyll b, chlorophyll (a+b) , and carotenoid contents between treatments elevated O3 concentration and ambient O3 at booting and anthesis stages, but the photosynthetic pigment contents in treatment elevated O3 concentration all decreased after anthesis, with a significant decrease of chlorophyll a, chlorophyll b, and chlorophyll (a+b) contents, which indicated that elevated O3 had minor effects on the synthesis of photosynthetic pigments but accelerated their decline process. Different wheat varieties had genetic difference in the responses of flag leaf photosynthetic pigment contents to elevated O3, among which, Yangmai 15 and Jiaxin 002 had better tolerance to ozone stress. The flag leaf chlorophyll a, chlorophyll b, and chlorophyll (a+b) contents at grain-filling stage (about 21 days after anthesis) had a significant positive correlation with the 1000-grain mass.关键词
小麦/FACE/剑叶/光合色素/粒重Key words
wheat/ FACE/ flag leaf/ photosynthetic pigment/ grain mass分类
农业科技引用本文复制引用
朱新开,高春艳,张如标,刘婷婷,李春燕,郭文善,朱建国,Kazuhiko Kobayashi..FACE条件下大气O3浓度增高对小麦剑叶光合色素含量的影响[J].应用生态学报,2012,23(8):2178-2184,7.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)、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）
