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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jul 2018, 39 (4)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Physiological responses and effective selection criteria

of drought tolerant plants

 

D.J. Park1,2, H.J. Im3, H.G. Kim2, W.H. Yang2, S.H. Yong2 and M. S. Choi1,2*

1Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, The Republic of Korea

2Division of Environmental Forest Science, Gyeongsang National University, Jinju 52828, The Republic of Korea

3Plant Propagation and Reproduction Division, Baekdudaegan National Arboretum, Bonghwa 36209, The Republic of Korea

*Corresponding Author E-mail: mschoi@gnu.ac.kr

 

 

 

Key words

Drought tolerant plants

Metabolites monitoring

Physiological assessment

Screening method

Withering rates

 

 

Publication Data

Paper received : 08.12.2016

Revised received : 10.07.2017

Re-revised received : 28.12.2017

Accepted : 30.12.2017       

 

Abstract

Aim: The present study was carried out to establish the method for screening drought tolerant Korean native plants and to analyze the appearances of drought tolerant Korean native plants on drought stress.    

 

Methodology: Twelve Korean native plant species (Scilla scilloides, Commelina communis, Hemerocallis fulva, Bupleurum latissimum, Hosta plantaginea, Iris dichotoma, Lysimachia barystachys, Viola mandshurica, Amphicarpaea bracteata, Aeschynomene indica, Dianthus chinensis and Urtica thunbergiana), which were 16-week-old seedlings, were exposed to drought stress by stopping irrigation to observe phenotypic, physiological and biochemical responses.        

 

Results: Based on the withering rates under drought condition, the plants were classified into three groups; drought tolerant (S. scilloides, C. communis, H. fulva, B. latissimum, H. plantaginea and I. dichotoma), normal (L. barystachys, V. mandshurica and A. bracteata) and sensitive (A. indica, D. chinensis and U. thunbergiana) group. While chlorophyll contents of the plants were generally decreased in the drought condition, the extents of decrement in the sensitive group were larger than in the tolerant group. RWCs in the tolerant group were higher than in the other groups on the same periods of drought condition. Proline and soluble reducing sugars accumulated in the sensitive group much earlier than in the tolerant group.           

 

Interpretation: The results revealed that S. scilloides, C. communis, H. fulva, B. latissimum, H. plantaginea and I. dichotoma were screened as drought tolerant plants and the established method in the study can be applied to screen drought tolerant plants for Korean natives.

 

 

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