Effects of elevated atmospheric ozone concentration on flag leaf photosynthetic pigment contents of wheat

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 t...

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Published inYing yong sheng tai xue bao Vol. 23; no. 8; p. 2178
Main Authors Zhu, Xin-Kai, Gao, Chun-Yan, Zhang, Ru-Biao, Liu, Ting-Ting, Li, Chun-Yan, Guo, Wen-Shan, Zhu, Jian-Guo, Kobayashi, Kazuhiko
Format Journal Article
LanguageChinese
Published China 01.08.2012
Subjects
Atmosphere
Chlorophyll - metabolism
Ozone - analysis
Photosynthesis - physiology
Plant Leaves - metabolism
Plant Leaves - physiology
Triticum - metabolism
Triticum - physiology
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Summary: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
ISSN:1001-9332