中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > CO_2浓度倍增下毛竹光合作用对光照强度的季节响应 江西农业大学学报 2007,29 (2) 215-219
Position: Home > Articles > Seasonal Photosynthetic Responses of Phyllostachys edulis to Light under Doubled CO_2 Concentration Acta Agriculturae Universitatis Jiangxiensis 2007,29 (2) 215-219

CO_2浓度倍增下毛竹光合作用对光照强度的季节响应

作  者：
施建敏;郭起荣;杨光耀
单  位：
江西农业大学江西省竹子种质资源与利用重点实验室
关键词：
毛竹;光合作用;季节响应;CO2浓度倍增
摘  要：
采用Li-6400测定了在短期CO2浓度倍增下毛竹光合作用对光照强度的季节响应,并对比同一测定毛竹在相同时期大气CO2浓度下的光响应曲线特征,结果表明:CO2浓度的增加促使毛竹最大净光合速率和光饱和点升高,光补偿点下降,而对光合量子效率的影响因季节而异,在夏、秋两季光合量子效率升高,冬季持平,春季降低,但全年来看还是具有促进作用;在相同的光照强度下,CO2浓度的倍增会使毛竹的净光合速率和水分利用率升高,而蒸腾速率和暗呼吸速率下降。CO2浓度倍增后,各光合生理特征参数的季节变化基本和大气CO2浓度下的季节变化相同,均与毛竹叶片的生理活性密切相关;而在不同季节,毛竹对CO2浓度升高的响应差异性是造成季节变化规律稍有不同的主要原因之一,证实了植物对短期CO2浓度升高的光合生理响应行为。
译  名：
Seasonal Photosynthetic Responses of Phyllostachys edulis to Light under Doubled CO_2 Concentration
作  者：
SHI Jian-min,GUO Qi-rong,YANG Guang-yao (Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization,JAU,Nanchang 330045,China)
关键词：
Phyllostachys edulis;photosynthesis;seasonal response;CO_2 concentration doubled
摘  要：
By using Li-6400,the seasonal photosynthetic responses of Phyllostachys edulis to light under the short-term doubled CO_2 concentration were determined,and the features of the response were compared with those of the corresponding photosynthetic responses to light under atmospheric CO_2 concentration.The main study results are as follows:At high CO_2 concentration level,the maximal net photosynthetic rate(P_max) and light saturate point(LSP) will be raised while the light compensate point(LCP) will be lowered.Although the apparent quantum yield(AQY) was enhanced at the annual average value of 6.25%,its response to the elevated CO_2 concentration changed with seasons: it increased in summer and autumn,decreased in spring,and had no change in winter.Under the same light intensity(1 000 μmol/m2·s),the elevated CO_2 concentration increased net photosynthetic rate(Pn) and water use efficiency(WUE),and decreased transpiration rate(Tr) and dark respiration rate(Rd).After CO_2 concentration was doubled,theseasonal variation tendency of photosynthetic characters were similar to those under atmospheric CO_2 concentration,it was closely related with seasonal changes of the leave's physiological activity.The different responses of Phyllostachys edulis to the elevated CO_2 concentration in four seasons were the main reason,which led to slight changes in seasonal variation tendency.Moreover,the photosynthetic response behavior of plants to the short-term elevated CO_2 concentration is proved in this study.

相似文章

导出引用
计量
文章访问数: 13
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46