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Change of Germination Rate for Chili Pepper and Chinese Cabbage Seed in Relation to Packaging Materials and Storage Conditions over 10 Years

보관용기 및 저장조건에 따른 고추 및 배추종자의 10년간 발아율 추이

  • Soh, Eun Hee (Seed Testing Research Center, Korea Seed & Variety Service) ;
  • Lee, Woo Moon (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Park, Kee Woong (Department of Crop Science, Chungnam National University) ;
  • Choi, Keun Jin (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Yoon, Moo Kyoung (Plant Variety Protection Division, Korea Seed & Variety Service)
  • 소은희 (국립종자원 종자검정연구센터) ;
  • 이우문 (국립원예특작과학원 채소과) ;
  • 박기웅 (충남대학교 식물자원학과) ;
  • 최근진 (국립원예특작과학원 채소과) ;
  • 윤무경 (국립종자원 품종보호과)
  • Received : 2014.05.22
  • Accepted : 2014.07.14
  • Published : 2014.12.31

Abstract

Seed viability is affected by storage conditions and rapid loss of viability in storage is the major cause for low germination. This study was carried out to examine the effect of packaging materials and storage temperature on seed germination rate over 10 years in two species (Capsicum annuum L. and Brassica rapa L. ssp. pekinensis) and determine effective storage conditions for maintaining seed viability. Seeds were packaged in aluminum poly pouches under vacuum, polyethylene bottles, and paper bags containing silica gel and stored under one of two controlled conditions ($15^{\circ}C$, RH 40% or $5^{\circ}C$, RH 30%) or at ambient condition. Seed germination was recorded at 6-month intervals for 10 years. The seeds of both species showed no decline in viability until 6.5 years at 15 or $5^{\circ}C$, irrespective of packaging materials. However, under ambient conditions, the seeds of chili pepper and Chinese cabbage in paper bags lost viability after 4 and 5 years, respectively. By contrast, seeds of both species in vacuum-aluminum poly pouches exhibited a 99% germination rate after 6 years under ambient conditions. Pepper seeds in the vacuum-aluminum poly pouches maintained a 93% germination rate after 10 years in ambient conditions. These results indicated that a special seed storage facility for maintaining viability of chili pepper and Chinese cabbage seed might not be essential and seed testing would not be necessary for 10 years, if chili pepper and Chinese cabbage seeds were packed in ambient/vacuum-aluminum poly pouches or $5^{\circ}C$/vacuum-aluminum poly pouches.

종자 저장 시 보관조건은 종자의 활력유지에 중요한 영향을 미치며, 급격한 종자활력의 저하는 발아율저하의 중요 요인이 된다. 본 연구의 목적은 주요 채소작물 중 고추(Capsicum annuum L.) 및 배추(Brassica rapa L. ssp. pekinensis) 종자의 저장조건(저장온도 및 보관용기)에 따른 10년 동안의 발아율추이를 조사 분석함으로써 저장기간에 따른 두 종자의 활력유지를 위한 효율적 저장조건을 규명하고자 하였다. 고추 및 배추종자를 각각 진공 알루미늄 호일 봉투, 폴리에틸렌(PET)병 및 종이봉투에 실리카겔과 함께 밀봉하여 상온, $15^{\circ}C$$5^{\circ}C$ 등 세 가지 온도조건 하에서 10년간 보관하면서 6개월마다 발아율검정을 수행하였다. 고추 및 배추종자는 $15^{\circ}C$$5^{\circ}C$에서는 보관용기에 상관없이 6.5년까지 저장하기 전의 활력을 그대로 유지하였으나 상온/종이봉투 조건하에서는 각각 4년째 및 5년째에 활력을 잃었다. 상온조건일지라도 진공 알루미늄 봉투에 보관 시 저장 6년까지 보관전의 활력을 유지하였고 특히 고추종자의 경우 저장기간 10년이 경과하여도 90% 이상의 발아율을 나타냈다. 본 연구결과에 의하면 종자저장시설(장기 및 중기)이 없더라도 고추종자의 경우 상온/진공 알루미늄 봉투, 배추종자의 경우 $5^{\circ}C$/진공 알루미늄 호일 봉투에 보관한다면 10년 이상 90% 이상의 발아율을 유지할 수 있을 것으로 사료되며 특히 활력유지 점검을 위한 모니터링 기간을 늦춰 발아검정을 위한 시료낭비를 줄일 수 있을 것으로 판단된다.

Keywords

References

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  1. 현삼 및 섬현삼 종자의 저장조건에 따른 발아특성 연구 vol.24, pp.5, 2016, https://doi.org/10.7783/kjmcs.2016.24.5.393