林业科技开发2011，Vol.25Issue(2)：48-52,5.DOI:10.3969/j.issn.1000-8101.2011.02.012
四个杨树品系夏季光合作用日变化
A study on diurnal variation of photosynthesis in four Populus strains
摘要
Abstract
The selection of species (strain) and the development of cultivation measures is an important part for establishing farmland shelterbelt. In this study, we selected four Populus strains ( ‘Ⅰ-69’、‘Ⅰ -72’、‘Ⅰ-63’ and ‘ Nanlin 895’ ),which have been widely planted in the Huaihe River, to analysis their photosynthetic characteristics. The results showed that: Whether maximum net photosynthetic rate in a day or daily average net photosynthetic rate, The photosynthetic capacity in four strains could be arranged from high to low as: ‘ Nanlin 895’＞‘Ⅰ-69’＞‘Ⅰ-63’ ＞ ‘Ⅰ-72’. This indicated that ‘ Nanlin 895’ had strong photosynthetic capacity compared with other strains; Concerning the impact of physiological and ecological factors on photosynthesis, the net photosynthetic rate of four strains had a certain correlation with the transpiration rate, intercellular CO2 concentration, leaf surface temperature and stomatal conductance. Among them, the most significant factor was transpiration rate, the next was leaf surface temperature. The influence of intercellular CO2 concentration and stomatal conductance was relatively small. Through the analysis of photosynthetic and physiological characteristics, a theoretical basis for the construction of farmland shelterbelt along the Huaihe River was provided.关键词
杨树品系/光合作用/日变化Key words
Populus/ photosynthesis/ diurnal variation引用本文复制引用
闫年,吴文友,刘桂华,张栋,项艳..四个杨树品系夏季光合作用日变化[J].林业科技开发,2011,25(2):48-52,5.基金项目
国家科技支撑计划子课题(编号:2009BADA6B06-1)和安徽省科技攻关重大专项(编号:08010302073)资助. （编号:2009BADA6B06-1）
