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Title:: Effects of Salt Stress on Seedling Growth and Photosynthetic Characteristics of Glycine gracilis

Author(s):: LIU Yu-lan; CHEN Dian-yuan; YUAN Ming-hao; DUAN Kai-huai; LI Wan; ZHANG Guo-yin; SUN Tang-yu; (School of Plant Science, Jilin Agricultural Science and Technology University, Jilin 132101, China)

Keywords:: Glycine gracilis; Salt stress; Growth; Photosynthetic characteristics

PACS:: -

DOI:: 10.11861/j.issn.1000-9841.2017.06.0913

Abstract:: This study examined the effects of various salt stresses (NaCl∶Na₂SO₄=1∶1和NaHCO₃∶Na₂CO₃=1∶1) on the plant growth and photosynthetic characteristics of small soybean variety Dongnong 690.The result showed that the low concentration of neutral salt accelerated the growth of Glycine gracilis to a certain extent, while alkaline salt didn′t induce obvious resistance, the high concentration of salt stress restrained the growth of Glycine gracilis.Under the condition of two kinds salt concentration higher than 60 mmol·L^-1stress, compared with the control, the growth and photosynthetic characteristic of plant changed significantly. Each value of root length, root nodule bacteria number, leaf area, fresh and dry ratio, net photosynthetic rate(Pn), stomatal conductance(Gs), transpiration rate(Tr), and stomatal limitation value(Ls) of small soybean were significantly negatively correlated with two kinds of salt stress. Chlorophyll content was negatively correlated with neutral salt stress and negatively correlated with alkaline salt stress. Leaf extracts relative conductivity and intercellular CO₂ concentration (Ci) were significantly and positively correlated with two kinds of salt stress.

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Effects of Salt Stress on Seedling Growth and Photosynthetic Characteristics of Glycine gracilis(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

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