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2015 Vol.33, Issue 6 Preview Page
Effects of Vernalization, Temperature, and Soil Drying Periods on the Growth and Yield of Chinese Cabbage

춘화, 온도와 토양건조 기간에 따른 배추의 생장 및 수량

Sang Gyu Lee1
,
Hee Ju Lee1*
,
Sung Kyeom Kim1
,
Chang Sun Choi1
,
Sung Tae Park1
,
Yoon Ah Jang2
,
Kyung Ran Do3
이 상규1
,
이 희주1*
,
김 성겸1
,
최 장선1
,
박 성태1
,
장 윤아2
,
도 경란3
1Vegetable Research Division, National Institute of Horticultural & Herbal Science
2Urban Agriculture Research Team, National Institute of Horticultural & Herbal Science
3Fruit Research Division, National Institute of Horticultural & Herbal Science
1국립원예특작과학원 채소과
2국립원예특작과학원 도시농업팀
3국립원예특작과학원 과수과
*교신저자. *Corresponding Author. 
31 December 2015. pp. 820-828
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Abstract

This study was carried out to determine the effects of vernalization, temperature, and soil water deficit (SD) on mesophyll cells, growth, and yield of Chinese cabbage (Brassica campestris L). The palisade parenchyma and spongy tissues of Chinese cabbage were observed under full irrigation and two weeks of SD treatment. These cells were severely collapsed by four weeks SD treatment. The SD treatment had the greatest influence on the growth of Chinese cabbage among the tested treatment factors (vernalization, temperature, and SD), growth significantly decreased by severe drought treatment (four weeks SD treatment). In addition, the relative growth rate, unit leaf rate, leaf area ratio, specific leaf area, and leaf weight ratio were significantly affected by SD treatment; however, other individual factors and their combined treatments did not influence the analyzed growth parameters. The yield under vernalization after high temperature and full irrigation treatments was 3,056 kg/10 a, which was the greatest among all the tested treatments, while four-week SD treatment significantly reduced the yield. Head formation of Chinese cabbage was not altered under SD treatment, and vernalization treatments did not induce bolting. Our results indicated that collapsing mesophyll cells and reduced growth and yield were induced by SD treatment. Thus we suggest that optimal irrigation system should be install to avoid or overcome crippling drought conditions in the open field.

Keywords
anatomical observation
Brassica campestris L. ssp. pekinensis
drought
environmental stress
stomata

본 연구는 여름철 배추재배시 안정적인 생산을 위한 몇가지 조건을 알아보기 위하여 춘화처리, 재배 기간 동안 온도처리, 토양수분 결핍 처리에 따른 배추의 엽육조직, 생장 및 수량에 미치는 영향을 구명하고자 실시하였다. 토양수분 결핍 2주 처리구에서는 울타리조직과 해면조직의 세포구조를 확인할 수 있었으나, 토양수분 결핍 4주 처리구에서는 세포조직이 완전히 붕괴되었다. 토양수분 결핍 처리가 가장 배추의 생장에 통계적으로 유의하게 영향을 크게 미쳤고, 배추의 생장은 토양수분 결핍 4주 처리구들에서 전반적으로 낮은 경향을 보였다. 토양수분 결핍처리는 배추의 상대생장률, 단위 엽건물중 증가율, 엽면적비율 및 비엽중, 및 엽중률에서 통계적으로 유의하게 효과가 인정되었다. 배추의 수량은 춘화처리 후 고온에서 충분히 관수한 처리구에서 가장 많았으며, 토양수분 결핍 4주 처리구들의 수량이 다른 처리구들에 비하여 유의하게 적었다. 배추 수확시 결구력은 토양수분 결핍 처리구에서 중이하로 나타나 심한 가뭄에 의한 식물체내 수분 부족은 결구력을 약화시키는 것으로 나타났다. 배추에서 문제가 되는 추대는 정식 초기에 저온처리후 고온으로 관리하여도 추대가 발생하지 않았다. 여름철 고온기 배추재배시 2주 동안 가뭄이 지속되면 엽육조직이 붕괴가 시작되고 생장이 지연되어 수확량이 줄어들기 때문에 적극적으로 관수해야 할 것으로 판단된다.

키워드
해부학적 관찰
Brassica campestris L. ssp. pekinensis
가뭄
환경스트레스
기공
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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 : 33
  • No :6
  • Pages :820-828
  • Received Date : 2015-05-04
  • Revised Date : 2015-07-07
  • Accepted Date : 2015-07-16
  • DOI :https://doi.org/10.7235/hort.2015.15076
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