Comparison of Amylogram Properties among Several Subspecies of Rice

여러 아종 벼 품종들간 아밀로그램 특성 비교

  • Kwak Tae-Soon (Life Science and Natural Resources College, Sangji University)
  • 곽태순 (상지대학교 생명자원과학대학)
  • Published : 2005.06.01

Abstract

This experiment was conducted to collect the basic information on the varietal diversity in amylogram properties of 3 different rice sub-species under tropical conditions in IRRI 2001 wet season based upon correlation and principal component analysis. The peak viscosity and breakdown property of Tongil type, i.e.; temperate Indica species showed higher similarity with Japonica type species rather than typical Indica and tropical japonica types. The amylogram properties such as final viscosity, pasting consistency and setback of Tongil type varieties were lower than those of typical Indica and tropical japonica types. The peak viscosity showed positive correlation with trough, while the breakdown showed negative correlation with setback in all tested 3 rice subspecies. The first principal component was applicable to increase the gelatinization temperature, final viscosity, pasting consistency and setback, and applicable to decrease the peak viscosity and breakdown. Varietal classification by the principal component score of each pedigree could be applied to the interpretation of the community by the scatter diagram for the amylogram properties to the different sub-species of rice at IRRI conditions.

서로 다른 벼 3아종의 품종군에 대한 아밀로그램 특성을 상관 및 주성분 분석으로 품종의 다양성을 파악한바 결과를 요약하면 아래와 같다. 1. 최고점도와 강하점도에서 나타난 성적으로 보아 통일형의 temperate indica품종군이 전형적인 인디카 품종군과 신초형의 tropical japonica품종군보다 자포니카 혈연에 가까웠다. 2. temperate indica 품종군이 전형적인 인디카 품종군과 tropical japonica 품종군보다 최종점도, 응집점도 및 취반점도는 낮게 나타났다. 3. 최고점도와 최저점도는 3아종의 품종군에서 다같이 고도의 정상관을 보였고 강하점도와 취반점도는 3아종에서 다같이 고도의 부상관을 보였다. 4. 제1주성분은 호화온도, 최종점도, 응집점도 및 취반점도를 증가시키는 방향으로 그리고 최고점도 및 강하점도는 감소시키는 방향으로 작용했다. 5. 주성분치로서 평면상 도표를 그린 품종군 분류로 품질관련 아밀로그램 특성의 공통된 품종의 특성을 파악할 수 있었다.

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