‘화원 3호’는 종간교잡을 통해 화영벼의 근동질계통을 육성하고자 ‘97년 화영벼와 O. rufipogon을 교배하고, 계속적인 여교배와 MAS를 병행 실시하여 CR1112-5-2-1 계통을 선발하였다. 생산력검정 시험 결과 조사 형질 중 이삭추출도, 적고를 제외한 기타 형질에서는 화영벼와 유사한 근동질계통이었으며, 품종보호원 출원 조건에 부합하여 ‘화원 3호’로 명명하고 품종보호원을 출원하였다. 출수기는 보통기재배에서 8월 14일로 화영벼와 동일한 중생종 품종이다. 천립중은 22.1 gr으로 화영벼보다 1 gr 정도 무겁다. 흰잎마름병과 줄무늬잎 마름병에는 저항성이나 충해에는 약하다. 도정 특성, 아밀로스 함량은 화영벼와 비슷한 수준이었다. ‘화원 3호의 정조수량은 ’06~’07년 2개년간 실시한 생산력검정 시험에서 평균 7.23 MT/ha로 화영벼와 유사하였다. ‘화원 3호’는 화영벼와 근동질계통으로 자포니카 계통의 내냉성을 증진시키는 중간 모본 그리고 내냉성 유전자의 특성 분석을 위한 육종재료로 이용될 수 있을 것이다.
‘Hwaweon3’ was developed from an interspecific cross between Hwayeongbyeo and a wild species, Oryza rufipogon L. (W1944) based on marker-aided selection and backcrossing. The recurrent parent ‘Hwayeongbyeo’ is a high grain quality cultivar with medium-maturity. ‘Hwaweon3’ is nearly isogenic to Hwayeongbyeo except a small O. rufipogon introgression on chromosomes 1, 8 and 12 harboring the QTL gene for cold tolerance. The preliminary and replicated yield trial was conducted at Chungnam National University in 2006 and 2007. The local adaptability test was carried out by the National Seed Management Office (NSMO) in 2008 and 2009. This cultivar was registered to NSMO with a cultivar designated as ‘Hwaweon3’. This cultivar averaged 78 cm in culm length and has a medium growth duration. This variety is resistant to stripe virus as the recurrent parent, and moderately resistant to leaf blast disease with durable resistance. Milled rice of ‘Hwaweon3’ is translucent and the grain quality traits are comparable to those of the recurrent parent. it has low protein content. The yield potential of ‘Hwaweon3’ in grain is about 7.23 MT/ha at the ordinary fertilizer level comparable to that of Hwayeongbyeo. ‘Hwaweon3’ performed better than Hwayeongbyeo in cold tolerance-related trait in the cold water-irrigated plot in the Chuncheon sub-station. This is mainly due to the introgressed segment from O. rufipogon on chromosome 1 harboring pe1.2 for panicle exsertion. ‘Hwaweon3’ could be used as a bridging line to enhance cold tolerance of japonica breeding lines.