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고희종(Hee Jong Koh),원용재(Yong Jae Won),차건완(Kean Wan Cha),이종철(Jong Cheol Lee),박순직(Sun Zik Park),허문회(Mun Hue Heu) 한국육종학회 1997 한국육종학회지 Vol.29 No.4
This study was carried out to investigate the inheritance mode of tillering angle using wx126-based near isogenic lines of different tillering angle, Broom, Open and Spread type, and the tillering angle of 73 rice varieties from Korea and IRRI was also estimated. The average tillering angle of rice varieties from Korea and IRRI were 10.5˚ (wide side) and 6.7˚ (narrow side) in japonicas, 12.3˚ (wide side) and 8.3˚ (narrow side) in Tongil type, and 8.7˚ (wide side) and 5.9˚ (narrow side) in Indicas. Average tillering angle at wide side of wx126 (original variety), Broom, Open, and Spread type at heading stage were 8.1˚, 5.5˚, 14.8˚, and 33.9˚, respectively, and the difference of tillering angle among the lines was maintained throughout the whole growth stage. In six F₂ populations of all-possible crosses among three near-isogenic lines, tillering angle showed continuous variation skewed to narrower parent, implying that it should be a quantitative character and the genes conferring the narrower tillering angle might be dominant over those conferring the wider tillering angle. Broad sense heritabilities for tillering angle varied 48.8% to 76.2%.