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2016 Vol.25, Issue 4 Preview Page
Physiological Responses for Soil Water Stresses in ‘Mihong’ Peach Tree

복숭아 ‘미홍’의 토양 수분 스트레스에 따른 생리반응

Yong Hee Kwon1*
,
Jae Man Lee23
,
Hyun Hee Han1
,
Suhyun Ryu1
,
Jae Hoon Jeong1
,
Gyung-Ran Do1
,
Jeom Hwa Han1
,
Han-Chan Lee1
,
Hee-Seung Park3
권 용희1*
,
이 재만23
,
한 현희1
,
류 수현1
,
정 재훈1
,
도 경란1
,
한 점화1
,
이 한찬1
,
박 희승3
1Fruit Research Division, National Institute of Horticultural & Herbal Science, Wanju 55365, Korea
2Icheon-si Agricultural Technology Center, Korea
3Department of Integrative Plant Science, School of Bioresource and Bioscience, Chung-Ang University, Anseong 17546, Korea
1농촌진흥청 국립원예특작과학원
2이천시 농업기술센터
3중앙대학교 생명자원공학부
*Corresponding author: kwon7946@korea.kr
30 November 2016. pp. 255-261
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Abstract

The present study was conducted to characterize physiological responses of aerial part according to soil water stresses in ‘Mihong’ peach trees. Discolorations, wilting and falling of leaves were observed in chronological order as response for waterlogging and no irrigation and the phenomena started from basal to end of shoots. Shoot growth in elongation and thickness decreased and fallen leaves were severe in waterlogged trees. Function of water uptake by roots and photosynthesis and leaf respiration decreased by waterlogging. Leaf chlorophyll contents decreased in both treatments. In waterlogging treatment, decrease of chlorophyll was observed in normal leaves with waterlogging using light microscopy. Starch content was lower in both treatment and carbohydrate content was lower in root with waterlogging. These results demonstrated that waterlogging weakened the function of soil water uptake and movement and decreased photosynthesis and fallen leaves. Finally the peach trees would wither or suffer low temperature damage through the shortage of reserve accumulations. We suggested that waterlogging damage in peach trees could be reduced to take notice of irrigation and install drainage facility to improve soil condition.

Keywords
chlorophyll
falling leaves
no irrigation
photosynthesis
reserve accumulation
waterlogging

복숭아 ‘미홍’ 품종의 토양 수분 스트레스에 의해 나 타나는 지상부의 생리적 반응을 구명하기 위해 본 연구 를 수행하였다. 잎의 변색, 위조, 낙엽의 순서로 침수와 무관수에 의해 반응이 나타났으며 가지의 기부에서 시작 되어 선단부로 확대되었다. 가지의 길이 및 직경 생장이 두 처리구에서 모두 감소되었고 침수에 의한 낙엽이 심 하게 발생되었다. 침수에 의해 뿌리의 수분 흡수와 잎의 광합성과 호흡이 감소되었다. 잎의 엽록소가 두 처리구 에서 모두 감소되었다. 침수처리구에서는 육안으로 변화 가 없던 잎에서도 엽록소가 감소한 것이 해부학적으로 관찰되었다. 전분은 침수와 무관수에서 모두 감소되었고 탄수화물은 침수처리구의 뿌리에서 감소되었다. 침수는 수분의 흡수나 이동이 불량해지고, 광합성능력의 감소와 낙엽이 발생되었다. 결국 저장양분이 부족해져 고사되거 나 내한성 약화로 저온피해의 가능성이 높은 것으로 판 단되었다. 복숭아 재배에서 수분 스트레스에 의한 피해 를 방지하기 위해 관수에 유의하고 배수시설을 설치하여 토양조건을 개선하는 것이 요구된다.

키워드
광합성
낙엽
무관수
엽록소
저장양분
침수
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 25
  • No :4
  • Pages :255-261
  • Received Date : 2016-09-12
  • Revised Date : 2016-10-26
  • Accepted Date : 2016-10-31
  • DOI :https://doi.org/10.12791/KSBEC.2016.25.4.255
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