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2017 Vol.26, Issue 3 Preview Page
Improvement of Tomato Seedling Quality under Low Temperature by Application of Silicate Fertilizer

저온 저장 시 규산 처리에 의한 토마토 묘소질 향상

Ngoc-Thang Vu1
,
Anh-Tuan Tran1
,
Thi-Tuyet-Cham Le1
,
Jong-Kuk Na2
,
Si-Hong Kim3
,
Jong-Man Park3
,
Dong-Cheol Jang3
,
Il-Seop Kim3*
넉 탕부1
,
안 추안트란1
,
띠 투엣참리1
,
라 종국2
,
김 시홍3
,
박 종만3
,
장 동철3
,
김 일섭3*
1Faculty of Agronomy, Vietnam National University of Agriculture, Hanoi, Vietnam
2Department of Controlled Agriculture, Kangwon National University, Chuncheon 200-701, Korea
3Department of Horticulture, Kangwon National University, Chuncheon 200-701, Korea
1하노이대학교 농업학과
2강원대학교 시설농업학과
3강원대학교 원예학과
*Corresponding author: kimilsop@kangwon.ac.kr
30 July 2017. pp. 158-166
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Abstract

The object of this study was to improve tomato seedling quality in low temperature(below 7, 10°C during night time or daily mean air temperature was 18°C) by application of silicate fertilizer. Six different silicate fertilizer concentrations (8, 16, 32, 64, 128, and 256mM) or water as the control were applied to tomato seedlings twice a week for 20 days. Positive effects were observed in the growth parameters of the seedlings treated with 16 and 32mM silicate fertilizer; the most effective concentration of silicate at which seedlings showed the best performance was 16mM. However, a high concentration of silicate (256mM) caused negative effects on the growth. The transpiration rate decreased alongside with the increase of silicate concentration up to 32mM, possibly due to the increased stomatal diffusive resistance. Silicate stimulated the growth and development of tomato seedlings, resulting in increased growth parameters and root morphology. However, no significant differences were observed among treatment numbers of soil-drenching wuth the silicate (6, 10, or 20 times with 16mM) for 20 days, suggesting that silicate treatment with 6 times may be sufficient to induce the silicate effects. The application of 16mM of silicate fertilizer reduced relative ion leakage and chilling injury during low temperature storage. In addition, the seedlings treated with silicate fertilizer recovered faster than those without silicate treatment after low temperature storage.

Keywords
chilling injury
ion leakage
low temperature storage
plug seedling
stomatal diffusive resistance

규산 시비가 토마토 플러그 묘소질에 미치는 영향과 묘의 저온저장시 규산의 저온장해 경감효과를 검토하였다. ‘Rapito’품종을 공시하여 30일간 32구 규격의 플러그 트레이에서 육묘한 뒤, 여섯 개의 규산 처리 농도구 (8, 16, 32, 64, 128 및 256mM)를 설계하여 20일 동안 주 2회 관주 처리한 뒤, 묘소질을 대조구와 비 교하였다. 처리 농도는 16mM과 32mM 처리가 초장, 엽면적, 생체중, T/R율 및 근권부 발육 등 대부분의 생육 지표에서 타 처리구에 비해 양호했으며, 특히 16mM의 농도에서 가장 좋은 묘소질을 보였으나, 64mM 이상의 고농도에서는 대조구에 비해 전반적으로 생육이 억제되는 경향을 보였다. 토마토 묘의 생리적 반응에서 엽온에 서는 처리구별 차이가 나타나지 않았으나, 증산율은 32mM이상의 농도 처리구에서 기공확산 저항이 증가하면 서 증산율이 감소되는 경향을 보였다. 또한, 처리 횟수에 따른 효과를 검토하기 위해 16mM농도의 규산을 20 일 동안 6, 10, 20회 관주처리 한 결과, 대부분의 생육지표에서 처리 횟수간에는 큰 차이가 없었으나, 무처리 구에 비해 묘소질이 향상되었으며, 특히 뿌리표면적, 근장, root tip수등 근권부의 생육이 현저히 증가하였다. 아울러 규산처리가 저온저장시 토마토 묘의 저온장해를 감소시키는 효과가 있음을 확인하였다.

키워드
저온장해
이온누출. 저온저장
프러그묘
기공확산 저항
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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 : 26
  • No :3
  • Pages :158-166
  • Received Date : 2017-02-07
  • Revised Date : 2017-04-24
  • Accepted Date : 2017-07-18
  • DOI :https://doi.org/10.12791/KSBEC.2017.26.3.158
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