华南农业大学学报2017，Vol.38Issue(2)：43-47,5.DOI:10.7671/j.issn.1001-411X.2017.02.009
3个荔枝品种盛花期光合特性的比较
Comparison of photosynthetic characteristics of three litchi cultivars at full-bloom stage
摘要
Abstract
Objective] To investigate the diurnal patterns and photosynthetic characteristics of the leaves of litchi (Litchi chinensis) at full-bloom stage, and provide references for cultivation and management of litchi at flowering stage .[Method]Under natural conditions , the photosynthetic parameters of three litchi cultivars including ‘Feizixiao ’ , ‘Guiwei ’ and ‘Nuomici ’ at full-bloom stage were measured using a LI-6400 portable photosynthesis system .[Result]The curves of diurnal changes in net photosynthetic rate ( Pn) had two peaks and clear midday depression for all three cultivars , the first peak was measured at 10:30, and the second peak was at 13:30.The average daily Pn of ‘Nuomici’ (3.76μmol· m-2 · s-1 ) was significantly higher than those of ‘Feizixiao ’ ( 2.38 μmol · m-2 · s-1 ) and ‘Guiwei ’ ( 2.41μmol· m-2 · s-1 ).Pn of three cultivars were significantly positively correlated with photosynthetic available radiation (PAR).In addition, Pn of ‘Guiwei’ was significantly positively correlated with air temperature (θa), and Pn of‘Nuomici’ was significantly positively correlated with stomatal conductance ( Gs) .[Conclusion]PAR is the primary ecological factor influencing Pn of the three litchi cultivars , and the effects of other factors on photosynthesis of litchi leaves vary among different cultivars .关键词
荔枝/光合特性/生理生态指标/净光合速率Key words
Litchi chinensis/photosynthetic characteristic/physiological and ecological index/net photo-synthetic rate ( Pn)分类
农业科技引用本文复制引用
张红娜,苏钻贤,陈厚彬..3个荔枝品种盛花期光合特性的比较[J].华南农业大学学报,2017,38(2):43-47,5.基金项目
国家现代农业产业技术体系 （）
