西北林学院学报2012，Vol.27Issue(4)：43-49,7.DOI:10.3969/j.issn.1001-7461.2012.04.08
阿克苏5个枣品种光合荧光特征及水分利用效率研究
Photosynthesis, Fluorescence Characteristics and Water Use Efficiency of Five Ziziphus jujuba Cultivars in Aksu,Xinjiang
摘要
Abstract
Photosynthesis, fluorescence characteristics and water use efficiency of five Ziziphus jujuba cul-tivars-'Dongzao', 'Huizao', 'Junzao', 'Linyilizao' and ' Zanhuangdazao' in Aksu, Xinjiang, China were studied by utilizing TPS-2 portable gas exchange fluorescence system, OS-30P photosynthesis yield analyzer. The relationship of net photosynthetic rate with the environmental factors was also examined. The results showed that: 1) the peak value of the diurnal courses of net photosynthetic rate of five culti-vars generally appeared around 12:00, the total mean net photosynthetic rate was in the order of Zanhuangdazao > Dongzao > Linyilizao > Junzao > Huizao; 2) the diurnal courses of transpiration of 5 cul-tivars generally appeared a single-peak pattern, the mean transpiration rate was in the order of 'Zanhuangdazao' > 'Dongzao' > 'Linyilizao' > 'Junzao' > 'Huizao'; 3) higher long-term water use efficiency (WUEsl) was observed in the cultivars of Junzao and Huizao, followed by 'Zanhuangdazao' and 'Linyilizao', lowest in 'Dongzao'; 4) the stomatal conductance appeared a pattern of "high in the morning and in the evening, low at noon", and mean values of the intercellular CO2 concentration were different in dif ferent cultivars; 5) the relationship of net photosynthetic rate of 5 cultivars with the environmental factors was different, and the main factors effecting the net photosynthetic rate were PAR and intercellular CO2 concentration among 5 cultivars;6)based on the chlorophyll fluorescence parameters of experimented cultivars showed that ' Dongzao' had poor ability to resist light inhibition. All those revealed that 'Dongzao'. 'Linyilizao' and 'Zanhuangdazao' had higher net photosynthetic rate and transpiration rate, with lower water use efficiency. On the contrary, 'Huizao' and 'Junzao' were more appropriate plant around oasis in Tanm Basin for their lower net photosynthetic rate, transpiration rate, and higher water use efficiency, strong ability to resist light inhibition.关键词
枣/光合特征/叶绿素荧光/水分利用效率Key words
Ziziphus jujuba Mill. / photosynthetic characteristic/ chlorophyll fluorescence/ water use efficiency分类
农业科技引用本文复制引用
吴正保,史彦江,宋锋惠..阿克苏5个枣品种光合荧光特征及水分利用效率研究[J].西北林学院学报,2012,27(4):43-49,7.基金项目
林业公益性行业项目(201004085) （201004085）
国家科技部“十一五”支撑计划课题项目(2007BAD36B07). （2007BAD36B07）
