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Effects of La and Acid Rain on Chlorophyll Content and Photosynthetic Rate of Soybean Seedling(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年05期
Page:
941-944
Research Field:
Publishing date:

Info

Title:
Effects of La and Acid Rain on Chlorophyll Content and Photosynthetic Rate of Soybean Seedling
Author(s):
ZHOU Qian-qian1; 2; YANG Wei2; LIANG Chan-juan2; ZHOU Qing1; 2
1.The Key Laboratory of Industrial Biotechnology，Ministry of Education，Jiangnan University，Wuxi 214122；
2.College of Environment and Civil Engineering，Jiangnan University，Wuxi 214122，Jiangsu，China
Keywords:
Lanthanum (La); Acid rain; Photosynthesis; Soybean seedling
PACS:
X517;Q945
DOI:
10.11861/j.issn.1000-9841.2009.05.0941
Abstract:
To explore the combined effects of acid rain and rare earth on photosynthesis，with soybeans cultivated under laboratory conditions as test materials，the effects of simulated acid rain and lanthanum on chlorophyll content (Chl) and photosynthetic rate (Pn) in soybean seedlings were studied.The results showed that under acid rain (AR1/pH3.0，AR2/pH3.5，AR3/pH4.0，AR4/pH4.5 and AR5/pH5.0) stress alone，Chl content and Pn were both inhibited.Under single La(RE1/20 mg.L-1，RE2/60 mg.L-1，RE3/100 mg.L-1，RE4/300 mg.L-1and RE5500 mg.L-1)treatment，the two indexes were both promoted under low concentration and inhibited under high concentration.With RE and AR combined treatments，Chl content and Pn had declined compared with the CK group.The inhibition degree was larger under lower pH value of AR and higher concentration of RE solution.Moreover，inhibition degree of the two indexes under RE1and AR combined treatment was lighter than that under AR or RE1 treatment alone，so they showed antagonistic action，while RE2-RE5and AR combined treatment showed synergetic effect.

References:

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Last Update: 2014-09-19