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2018 Vol.36, Issue 5 Preview Page

Research Article

Nondestructive Measurement of Paprika (Capsicum annuum L.) Internal Electrical Conductivity and Its Relation to Environmental Factors
Hyun Jun Park1
,
Jin Hee Park2
,
Kyoung Sub Park3
,
Tae In Ahn1
,
Jung Eek Son1*
1Department of Plant Science and Research Institute of Agriculture and Life Sciences, Seoul National University
2School of Crop Science and Agricultural Chemistry, Chungbuk National University
3Protected Horticulture Research Institute, National Institute of Horticultural and Herbal Science
*교신저자. *Corresponding Author. 
31 October 2018. pp. 691-701
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Abstract

The electrical properties of plants represent physiological activities including water and ion transport in their stems. Therefore, monitoring electrical conductivity in plants (ECp) can be used to detect plant responses to changes in environmental conditions. Stable measurement of internal ECp was developed to evaluate the relationship between the ECp and environmental factors. Two electrodes with three needles were inserted into each side of paprika stems to monitor paprika ECp in response to the environmental factors of temperature, irradiation, and relative humidity. The ECp was positively correlated with irradiation and temperature (R2 = 0.642 and 0.815, respectively), but negatively correlated with relative humidity (R2 = -0.416). The ECp was higher in May than in February due to size differences in the vascular bundle sheaths as well as changes in irradiation and temperature. The ECp was predicted using a regression equation that described environmental data, and the predicted results corresponded well to plant measurements. The ECp was higher during the day than at night, which was attributed to higher daytime water content in the stems.

Keywords
electrical conductivity
ion concentration
moisture content
paprika
resistance

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Information
  • Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
  • Publisher(Ko) :한국원예학회
  • Journal Title :Horticultural Science and Technology
  • Journal Title(Ko) :원예과학기술지
  • Volume : 36
  • No :5
  • Pages :691-701
  • Received Date : 2018-02-22
  • Revised Date : 2018-04-18
  • Accepted Date : 2018-04-14
  • DOI :https://doi.org/10.12972/kjhst.20180069
Journal Informaiton Horticultural Science and Technology Horticultural Science and Technology
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