연구보문 : 벼 재조합자식계통의 초기급속등숙속도 년차간 변이에 따른 아밀로그램 특성변이 = Research Papers : Characteristics Variation of Amylogram Properties by the Year Variation of the Rapidity of Grain Filling in the Recombinant Inbred Lines of Rice

국문 초록 (Abstract)

밀양 23호와 기호벼의 재조합자식 164계통에 대하여 2002년 부터 2005년까지 4년간 초기급속등숙속도의 년차간 표준오차를 기준으로 품종군을 분류하여 품종군별 아밀로그램 특성과 상관관계를 분석한 결과 년차간 변이가 작을수록 급속등숙형이 며 년차간 변이가 클수록 완만등숙형 이었다. 년차간 변이가 작을수록 호화온도가 낮았으며 년차간 변이가 클수록 취반점도를 제외한 다른 아밀로그램특성 RVA가 낮았고 반면에 년차간 변이가 작을수록 높았다. 초기급속등숙속도 년차간 변이 기 준 모든 품종군에서 강하점도와 취반점도는 고도의 부 상관을 보였고 년차간 변이가 큰 제4품종군을 제외한 모든 품종군에서는 호화온도와 취반점도는 유의한 정상관을 보였다.

다국어 초록 (Multilingual Abstract)

Amylogram properties such as peak viscosity, hot viscosity, cool viscosity, breakdown, pasting consistency and setback were investigated by the Rapid Visco Analyzer and interpreted by the varietal groups classified by the year variation of standard error of the rapidity of grain filling(RGF) which was calculated by the percentage of grain weight at 15 days after heading to 40 days after heading during four years from 2002 to 2005. The 164 rice recombinant inbred lines from the cross of Milyang23 and Gihobyeo were used to get the informations regarding amylogram properties and correlations among amlogram properties by the varietal groups based on year variation of RGF. The varietal group which has small year variation of the RGF showed fast grain filling, low gelatinization temperature and high RVA(rapid visco analyzer unit) of amylogram properties, otherwise varietal group which has big year variation of the RGF showed slow grain filling, low RVA of amylogram properties. Negative significant correlations were found between breakdown and setback in all varietal groups based on the year variation of RGF, however positive significant correlations were found between gelatinization temperature and setback in all varietal groups except varietal group 4 whcih has big year variation of RGF.