西南林业大学学报2017，Vol.37Issue(2)：30-34,5.DOI:10.11929/j.issn.2095-1914.2017.02.005
盐胁迫对4种园林植物光合特性的影响
Effects of NaC1 Stress on Photosynthetic Characteristic of Garden Seedlings of 4 Species
摘要
Abstract
The effects of NaC1 stress on photosynthesis of seedlings of 4 species were studied to provide a reference for garden plant selection of salt tolerant.Seedlings of Hibiscus rosa-sinensis,Ixora chinensis,Schefflera arboricola,Cordylinefruticosa were placed in simulating salt environment,and then their photosynthetic indexes were determined.Results showed that at 0.3％ salt concentration,with increasing salt stress time,Pn of the 4 species continuously decreased.Gs of H.rosa-sinensis continuously decreased,whereas the other species decreased followed by an increase.Ci of H.rosa-sinensis and S.arboricola continuously decreased,and Ⅰ.chineusis decreased followed by an increase,C.fruticosa continuously increased.Tr of H.rosa-sinensi continuously decreased,and the other species decreased followed by an increase.At 0.6％ salt concentration,Pn of seedlings of the 4 species continuously decreased.Gs of H.rosa-sinensis,Ⅰ.chinensis and S.arboricola decreased followed by an increase,C.fruticosa continuously decreased.Ci of H.rosa-sinensis,Ⅰ.chinensis and S.arboricola decreased followed by an increase,whereas C.fruticosa increased and then decreased.Tr of seedlings of the 4 species decreased followed by an increase.The overall judgment from Pn,Gs,Ci and Tr of the 4 plant species,H.rosa-sinensis and S.arboricola had stronger salt tolerance among 4 species and was more suitable for cultivation in salt land,and salt tolerance of Ⅰ.chinensis was medium,whereas that of C.fruticosa was weaker.关键词
大红花/龙船花/鹅掌藤/朱蕉/光合指标/盐胁迫/幼苗Key words
Hibiscus rosa-sinensis/Ixora chinensis/Schefflera arboricola/Cordyline fruticosa/photosynthetic index/salt stress/seedling分类
农业科技引用本文复制引用
蔡金桓,都成林,薛立,叶自慧,佘汉基,李子华..盐胁迫对4种园林植物光合特性的影响[J].西南林业大学学报,2017,37(2):30-34,5.基金项目
广州市科研条件建设项目(2014SY000010)资助. （2014SY000010）
