小麦幼苗从低光到强光适应过程中光合与抗氧化酶变化.pdf

作物学报 ACTA AGRONOMICA SINICA 2010, 36(3): 449456 /zwxb/ ISSN 0496-3490; CODEN TSHPA9 E-mail: xbzw@ DOI: 10.3724/SP.J.1006.2010.00449 小麦幼苗从低光到强光适应过程中光合和抗氧化酶变化 李宏伟 李 滨 郑 琪 李振声* , 100101 : , 54 , 013824 48 h , , (P )(G )(T ), 8 h , 48 h n s r ; b , a/b ; PSII , ; SODCATAPX GR , 48 h 8 h LHCII , 48 h , 3 h , 8 h , VDE ZEP 48 h : ; ; ; Variation in Photosynthetic Traits and Antioxidant Enzyme Activities of Wheat Seedlings Transferred from Low to High Light Growth Condition * LI Hong-Wei, LI Bin, ZHENG Qi, and LI Zhen-Sheng State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China Abstract: When plants absorb excessive light energy, a large number of reactive oxygen species is generally produced resulting in the degradation of DNA, proteins, and pigments in plants. For wheat (Triticum aestivum L.) grown in North China, the photooxidation induced by high light (HL) during grain-filling period usually causes great losses in grain yield. It is important to understand the mecha