Journal of Practical Agriculture & Fisheries Research (현장농수산연구지)

Korea National University of Agriculture and Fisheries (국립한국농수산대학교 교육개발센터)
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Statistical Analysis of Quantitative Traits of Saccharina japonica cultured in Goheung, Jellanam-do

전남 고흥 양식 다시마의 양적형질에 대한 통계적 분석

  • Yun, Y.S. (Statistics Korea) ;
  • Kim, C.W. (Department of Aquaculture, Korea National College of Agriculture and Fisheries) ;
  • Choi, S.J. (Department of Aquaculture, Korea National College of Agriculture and Fisheries)
  • 윤영성 (통계청) ;
  • 김철원 (국립한국농수산대학 수산양식학과) ;
  • 최성제 (국립한국농수산대학 수산양식학과)
  • Received : 2020.10.31
  • Accepted : 2020.12.10
  • Published : 2020.12.28
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Abstract

Growth tests on the Wando and Baengnyeongdo cultivars of Saccharina japonica were performed at the Myeongcheon and Gyedo aquafarms, Goheung in Jeollanamdo, from February to July in 2003. Five environmental conditions and 2 traits were measured monthly. The data were used to analyze the growth patterns, relationships between traits and principal component. Box plots were used to display the growth patterns. Scatter plots and regression and correlation coefficients were used to determine the strength of relationships between the traits. A principal component analysis revealed that the first principal component explained more than 91.4% and 90.5% of the total sample variance in the Myeongcheon and Gyedo aquafarms. From the viewpoint of the economic traits (blade length, blade weight), the growth of populations from the Gyedo aquafarm was stronger than that of those from the Myeongcheon aquafarm, and the growth of the Baengnyeongdo cultivar was superior to that of the Wando one.

본 연구는 전남 고흥 명천·계도 양식어장에서 2003년 2월부터 7월까지 완도와 백령도산 다시마 종묘를 이식, 시험양식을 실시하였다. 다섯 가지 환경 조건(수온, 염분, 총질소, 총인, 부유물질)과 두 가지 형질(엽장, 엽중량)을 매월 측정하였다. 이 데이터를 이용하여 성장 패턴, 형질간의 상관관계 및 PCA를 분석하는데 이용하였다. Box plot은 성장 패턴을 확인하기 위해 사용하였고, 형질들 간의 상호관계를 파악하기 위해 산점도, 회귀 계수 및 상관 계수를 이용하였다. 주성분 분석 결과 명천·계도 양식어장의 총 분산의 91.4%, 90.5% 이상을 제2주성분으로 설명할 수 있었다. 주성분분석(PCA)으로 두 어장에서 엽장과 엽중량의 성장에 가장 크게 영향을 주는 환경변수는 수온과 부유물질로 나타났다. 두 품종 모두 명천 어장보다 계도 어장에서 성장이 빨랐고, '백령도' 품종이 '완도' 품종보다 성장이나 중량에서 더 우수하였다.

Keywords

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