FACE条件下冬小麦的光合适应

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 气候变化研究室

	FACE条件下冬小麦的光合适应
	韩雪; 林而达; 郝兴宇; 马占云; 王贺然
刊名	中国农业气象
	2009
卷号	30 期号:4 页码:481-485
关键词	FACE(Free Air Carbon dioxide Enrichment) 光合适应冬小麦旗叶气体交换测量 SPAD 叶绿素
ISSN号	1000-6362
其他题名	Photosynthetic Acclimation of Winter Wheat under Free Air CO_2 Enrichment (FACE)
英文摘要	利用开放式CO_2浓度升高(Free Air Carbon dioxide Enrichment)系统平台,于冬小麦开花期、乳熟期对旗叶进行气体交换测量,根据光合模型计算光合参数,研究550μL·L~(-1)CO_2对冬小麦旗叶光合能力的影响.结果表明,无论是在冬小麦开花期还是乳熟期,FACE圈内的小麦叶片在短时间高CO_2浓度下初始出现的光合速率增强逐渐减弱或消失,即FACE圈内的小麦叶片表现出对高CO_2浓度的光合适应现象.低氮、常规施氮水平下均发现了小麦旗叶的光合适应现象,但是光合适应现象与施氮量没有显著的线性关系.另外,研究发现,FACE系统中,冬小麦旗叶的SPAD值和叶绿素含量降低,这可能是导致FACE系统中小麦叶片出现光合适应现象的原因.; Gas exchange was measured for flag leaf of winter wheat in the flowering and dough stage under the free air CO_2 enrichment (FACE) system. Photosynthetic parameters were also calculated by using a biochemical model. Research was conducted on the effect of the response curves and photosynthetic parameters with elevated CO_2(550 μL·L~(-1)). The results showed that the net photosynthesis rate, which increased with CO_2 concentration in short term, decreased even disappeared in FACE rings both at flowering stage and dough stage. That means photosynthetic acclimation occurred in the flag leaf of winter wheat in FACE rings. There was not liner relationship between photosynthetic acclimation and N supply. SPAD and chlorophyll content in the flag leaf decreased with elevated CO_2, which probably was main reason for photosynthetic acclimation.
学科主题	农业基础科学
语种	中文
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/17298]
专题	农业环境与可持续发展研究所_气候变化研究室
作者单位	中国农业科学院农业环境与可持续发展研究所, 农业部农业环境与气候变化重点实验室, 北京, 100081
推荐引用方式 GB/T 7714	韩雪,林而达,郝兴宇,等. FACE条件下冬小麦的光合适应[J]. 中国农业气象,2009,30(4):481-485.
APA	韩雪,林而达,郝兴宇,马占云,&王贺然.(2009).FACE条件下冬小麦的光合适应.中国农业气象,30(4),481-485.
MLA	韩雪,et al."FACE条件下冬小麦的光合适应".中国农业气象 30.4(2009):481-485.