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JOURNAL OF DESERT RESEARCH  2012, Vol. 32 Issue (6): 1674-1680    DOI:
Biology and Soil     
Responses of Reaumuria soongorica Seed Germination to Salt Stress and Moderate Drought
SONG Xue-mei, YANG Jiu-yan, LV Mei-ting, YANG Ming, ZHANG Zuo-ru
College of Life Science, Inner Mongolia University, Hohhot 010021, China
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Abstract  

Experiment on response of Reaumuria soongorica seed germination to drought stress and moderate drought was conducted in laboratory. Using the two-factor orthogonal method, we set 10 NaCl treatments ranging from 0 to 250 mmol·L-1, and 2 PEG grads, 0 g·L-1 and 75 g·L-1. 12 germination indexes were measured. Results showed that germination rate of R. soongorica decreased, seed vitality reduced, and radical length as well as hypocotyl length was inhibited by NaCl stress. However, moderate drought could raise germination rate, increase seed vitality, and promote dry weight to accumulate. Salt-proof membership function analysis revealed that R. soongorica had evolved cross-adaptation strategy to resist salt stress and drought stress.

Key words:  Reaumuria soongorica      seed germination      NaCl      PEG      cross-adaptation     
Received:  23 May 2012      Published:  04 July 2012
ZTFLH:  Q945  

Cite this article: 

SONG Xue-mei, YANG Jiu-yan, LV Mei-ting, YANG Ming, ZHANG Zuo-ru. Responses of Reaumuria soongorica Seed Germination to Salt Stress and Moderate Drought. JOURNAL OF DESERT RESEARCH, 2012, 32(6): 1674-1680.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2012/V32/I6/1674

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