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2014 Vol.59, Issue 3 Preview Page

Original Research Article

Dry-heat Treatment Effect for Seed Longevity Prediction in Rice Germplasm

벼 유전자원의 저장수명 예측을 위한 건열처리 효과

Young-Wang Na1
,
Hyung-Jin Baek2
,
Yu-Mi Choi2
,
Sok-Young Lee2
,
Jung-Ro Lee2
,
Jong-Wook Chung2
,
Yong-Jin Park3
,
Seok-Hyeon Kim4*
나 영왕1
,
백 형진2
,
최 유미2
,
이 석영2
,
이 정로2
,
정 종욱2
,
박 용진3
,
김 석현4*
1Research Policy Bureau, Rural Development Administration, Jeonju 560-500, Korea
2National Academy of Agricultural Science, Rural Development Administration, Wanju 565-851, Korea
3College of Industrial Science, Kongju National University, Yesan 314-701, Korea
4College of Agriculture and Life Sciences, Gyeongsang National University, Chinju 660-701, Korea
1농촌진흥청 연구정책국
2농촌진흥청 국립농업과학원
3공주대학교 산업과학대학
4경상대학교 농업생명과학대학
*Corresponding Author
30 September 2014. pp. 230-238
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Abstract

The purpose of this study was to develop the cost-effective and efficiency seed longevity prediction method of rice (Oryza sativa L.) germplasm for viability monitoring. To find an optimum predicting method for rice seed longevity at genebank, an accelerated ageing (AA) test, a controlled deterioration (CD) test and a dry-heat treatment (DHT) were conducted to the four groups of rice germplasm based on ecotype, such as Indica, Japonica, Javanica and Tongil type. Among the three artificial aging treatments, the dry-heat treatment of 36 hours at 90°C is suggested as a routine predictive test method of rice germplasm longevity at a genebank. The distribution of germination rate on 3,066 accessions which conserved 26.5 years at 4°C showed similar trend with the result of distribution by dry-heat treatment at 90°C on 36 hours using 106 accessions of rice selected samples which composed four ecotype groups. The results show that the dry-heat treatment affect not only predicting the rice seed longevity but also determining effective interval for monitoring germination of rice germplasm in genebanks.

Keywords
seed longevity
dry-heat treatment
rice ecotypes
genebank
germplasm
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 59
  • No :3
  • Pages :230-238
  • Received Date : 2014-05-28
  • Revised Date : 2014-06-10
  • Accepted Date : 2014-06-19
  • DOI :https://doi.org/10.7740/kjcs.2014.59.3.230
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