摘要
采用盆栽试验法,对花叶唐竹(Sinobambusa tootsik f.luteolo-albo-striata)、小琴丝竹(Bambusa multiplex‘Alphonse-karr’)和刺黑竹(Chimonobambusa neopurpurea)进行不同浓度盐(NaCl)胁迫(CK、0.1%、0.3%、0.5%、0.7%、1.0%)处理,用美国LI-COR公司生产的LI-6400便携式光合作用分析系统测定其各项光合作用相关指标,分析研究其中重要的4项指标:净光合速率(Pn)、气孔导度(Gs)、胞间二氧化碳浓度(Ci)和蒸腾速率(E),以探究NaCl胁迫对3种竹子叶片光合作用的影响。结果表明:低盐胁迫(0.1%NaCl处理)提高了小琴丝竹和刺黑竹叶片净光合速率、气孔导度和蒸腾速率,而对花叶唐竹影响不大,但随着盐胁迫浓度的增加,3种竹类植物叶片的净光合速率、气孔导度和蒸腾速率呈逐渐下降的趋势;3种竹类植物胞间二氧化碳浓度随盐胁迫浓度的提高变化规律不明显。
Four important indices of photosynthesis, including net photosynthetic rate （Pn）, stomatal conductance （Gs）, transpiration rate （E） and intercellular CO2 （Ci） of the three bamboos of Sinobambusa tootsik f. luteolo-albostriata, Bambusa multiplex ＇Alphonse-karr＇ and Chimonobambusa neopurpurea were studied by LI-6400 Portable Photosynthesis System and treatments by different concentrations of NaCI （CK-0.0%, S1-0.1%, S2-0.3%, S3-0.5%, S4-0.7% and S5-1.0%） in order to discuss the effects of NaCl stress on the photosynthesis of bamboos. The results showed that： low concentrations of NaCl stress （0.1%） promoted the Pn, Gs and E of Bambusa multiplex ＇Alphonse-karr＇ and Chimonobambusa neopurpurea, but little effect on Sinobambusa tootsik f. luteolo-albo-striata; from 0.3% NaCl stress to 1.0% NaCl stress, with the increasing of salinity, Pn, Gs and E of all three bamboos were decreased; Ci of all three bamboos was not in good relationship with the increasing of salinity.
出处
《热带作物学报》
CSCD
北大核心
2013年第5期910-914,共5页
Chinese Journal of Tropical Crops
基金
厦门市科学技术局科研项目(No.3502Z20102003)
厦门市市政园林局科研项目(No.YK-2000-02)
关键词
花叶唐竹
小琴丝竹
刺黑竹
NACL胁迫
光合作用
Sinobambusa tootsik f. luteolo-albo-striata
Bambusa nndziplex ＇Alphonse-karr＇
Chimonobambusa neopurpurea
NaC1 stress
Photosynthesis
