• 제목/요약/키워드: RDA analysis

검색결과 2,391건 처리시간 0.036초

Phylogenetic analysis and association of markers and traits related to starch contents in Korean potato cultivars using SSRs

  • Yi, Jung Yoon;Seo, Hyo Won;Huh, On Sook;Park, Young Eun;Cho, Ji Hong;Cho, Hyun Mook
    • 한국육종학회지
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    • 제42권1호
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    • pp.28-34
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    • 2010
  • Diversity of 30 Korean potato cultivars was evaluated using 14 microsatellite markers. Twelve microsatellite markers representing 12 loci in the potato genome detected 84 polymorphisms among 30 cultivars and revealed alleles with a mean of 7.00 alleles per primer. The polymorphism information content (PIC) value ranged from 0.57 to 0.93 with average of 0.82. Based on polymorphism, cluster analysis was conducted by the unweighted pair-group method with arithmetic average (UPGMA) methods. Thirty potato varieties were distinctly separated into 2 groups and similarity coefficient of cluster ranged from 0.58 to 0.95. Thirty tetraploid cultivars were evaluated for six important agronomic traits. One-way analysis of variance was done to look for the degree of relationships between individual markers and traits. K1 and K2 markers showed a significant association with amylose contents, starch contents, and specific gravity.

Flavonoids analysis about mulberry fruit of Korean mulberry cultivar, 'Daeshim'

  • Ju, Wan-Taek;Kwon, O-Chul;Kim, Yong-Soon;Kim, Hyun-Bok;Sung, Gyoo-Byung;Kim, Jong-gil
    • International Journal of Industrial Entomology and Biomaterials
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    • 제37권2호
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    • pp.43-48
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    • 2018
  • Mulberry fruit is a new income product in Korea sericulture due to the increase of fruit consumption. However, flavonoids of Korean mulberry cultivar for fruit production did not reported yet. In this study, the typical mulberry cultivar, 'Daeshim' was analyzed using ultrahigh performance liquid chromatography coupled with diode array detection and quadrupole time-of-flight mass spectrometry (UPLC-DAD-QTOF/MS) technique for flavonoids analysis. Nine flavonoids were isolated and analyzed from Daeshim using UPLC-DAD-QTOF/MS chromatogram. According to quantitative analysis, rutin (66.1 mg/100g DW) and quercetin 3-O-(6"-O-malonyl) glucoside (26.7 mg/100g DW) were abundant in mulberry fruit. Our results might be used as basic information for mulberry consumption.

Comparison of Analytical Methods for Volatile Flavor Compounds in Leaf of Perilla frutescens

  • Kim, Kwan-Su;Ryu, Su-Noh;Song, Ji-Sook;Bang, Jin-Ki;Lee, Bong-Ho
    • 한국작물학회지
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    • 제44권2호
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    • pp.154-158
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    • 1999
  • Volatile flavor compounds from perilla leaves were extracted and analyzed with different methods, head-space analysis (HS), simultaneous steam distillation and extraction (SDE) , and solvent extraction (SE), and to compare their efficiencies for quick analysis. Over 30 volatile compounds were isolated and 28 compounds were identified by GC/MSD. Major compound was perillaketone showing the compositions of which were 92% in SDE method, 86% in headspace analysis, and 62% in solvent extraction method. For quick evaluation of leaf flavor in perilla, it was desirable because the headspace analysis method had a shorter analyzing time and smaller sample amount than the other methods.

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Prototype Reduction Schemes와 Mahalanobis 거리를 이용한 Relational Discriminant Analysis (Relational Discriminant Analysis Using Prototype Reduction Schemes and Mahalanobis Distances)

  • 김상운
    • 전자공학회논문지CI
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    • 제43권1호
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    • pp.9-16
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    • 2006
  • RDA(Relational Discriminant Analysis)는 패턴의 특징벡터 대신에 학습 패턴을 대표하는 프로토타입들과의 비유사도 벡터에 기반하여 식별기를 설계하는 방법이다. 따라서 RDA 식별기의 성능은 프로토타입을 선택하는 방법과 비유사도를 측정하는 방법에 따라 결정된다. 본 논문에서는 PRS(Prototype Reduction Schemes)를 이용하여 프로토타입을 추출한 다음, 샘플 벡터들간의 마할라노비스 거리에 의한 상관행렬로 RDA의 식별성능을 향상시키는 방법을 제안한다. 인공 데이터 및 실-생활 데이터를 대상으로 실험한 결과, 제안한 방법의 식별성능이 기존의 방법에 비하여 개선되었음을 확인하였다.