%0 Journal Article
%T Characterization of photosynthesis, photoinhibition and the activities of C4 pathway enzymes in a superhigh-yield rice,Liangyoupeijiu<br>Characterization of photosynthesis,photoinhibition and the activities of C_4 pathway enzymes in a superhigh-yield rice,Liangyoupeijiu
%A WANG Qiang
%A LU Congming
%A ZHANG Qide
%A HAO Naibin
%A GE Qiaoying
%A DONG Fengqin
%A BAI Kezhi
%A KUANG Tingyun
%A <br>王强
%A 卢从明
%A 张其德
%A 郝迺斌
%A 戈巧英
%A 董凤琴
%A 白克智
%A 匡廷云
%J 中国科学C辑(英文版)
%D 2002
%I Springer
%X Characteristics of photosynthetic gas exchange, photoinhibition and C(4) pathway enzyme activities in both flag leaves and lemma were compared between a superhigh-yield rice (Oryza sativa L.) hybrid, Liangyoupeijiu and a traditional rice hybrid, Shanyou63. Liangyoupeijiu had a similar light saturated assimilation rate (Asat) to Shanyou63, but a much higher apparent quantum yield (AQY), carboxylation efficiency (CE) and quantum yield of CO(2) fixation (PhiCO(2)). Liangyoupeijiu also showed a higher resistance to photoinhibition and higher non-radiative energy dissipation associated with the xanthophyll cycle than Shanyou63 when subjected to strong light. In addition, Liangyoupeijiu had higher activities of the C(4) pathway enzymes in both flag leaves and lemmas than Shanyou63. These results indicate that higher light and CO(2) use efficiency, higher resistance to photoinhibition and C(4) pathway in both flag leaf and lemma may contribute to the higher yield of the superhigh-yield rice hybrid, Liangyoupeijiu.
%K superhigh-yield hybrid rice
%K photosynthesis
%K photoinhibition
%K C4 pathway<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=180CF3A72E750F3261A8A60EDC957784&aid=671D3CED6E1259071C2017D6C7EBF15F&yid=C3ACC247184A22C1&vid=94E7F66E6C42FA23&iid=94C357A881DFC066&sid=3FC4D669D19FF0C6&eid=DA4893B5F9885621&journal_id=1674-7305&journal_name=ScienceChina.Lifesciences&referenced_num=4&reference_num=0