중생 내냉성 벼 중간모본 품종 ‘화원3호’
A New Cold Tolerant Rice Variety Developed from an Interspecific Cross, ‘Hwaweon3’
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‘Hwaweon3’ was developed from an interspecific cross between Hwayeongbyeo and a wild species, Oryza rufipogonL. (W1944) based on marker-aided selection and backcrossing. The recurrent parent ‘Hwayeongbyeo’ is a high grain qualitycultivar with medium-maturity. ‘Hwaweon3’ is nearly isogenic to Hwayeongbyeo except a small O. rufipogon introgression onchromosomes 1, 8 and 12 harboring the QTL gene for cold tolerance. The preliminary and replicated yield trial was conductedat Chungnam National University in 2006 and 2007. The local adaptability test was carried out by the National Seed ManagementOffice (NSMO) in 2008 and 2009. This cultivar was registered to NSMO with a cultivar designated as ‘Hwaweon3’. This cultivaraveraged 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 grainquality traits are comparable to those of the recurrent parent. it has low protein content. The yield potential of ‘Hwaweon3’ ingrain is about 7.23 MT/ha at the ordinary fertilizer level comparable to that of Hwayeongbyeo. ‘Hwaweon3’ performed betterthan Hwayeongbyeo in cold tolerance-related trait in the cold water-irrigated plot in the Chuncheon sub-station. This is mainlydue to the introgressed segment from O. rufipogon on chromosome 1 harboring pe1.2 for panicle exsertion. ‘Hwaweon3’ couldbe used as a bridging line to enhance cold tolerance of japonica breeding lines.
Abstract
‘Hwaweon3’ was developed from an interspecific cross between Hwayeongbyeo and a wild species, Oryza rufipogonL. (W1944) based on marker-aided selection and backcrossing. The recurrent parent ‘Hwayeongbyeo’ is a high grain qualitycultivar with medium-maturity. ‘Hwaweon3’ is nearly isogenic to Hwayeongbyeo except a small O. rufipogon introgression onchromosomes 1, 8 and 12 harboring the QTL gene for cold tolerance. The preliminary and replicated yield trial was conductedat Chungnam National University in 2006 and 2007. The local adaptability test was carried out by the National Seed ManagementOffice (NSMO) in 2008 and 2009. This cultivar was registered to NSMO with a cultivar designated as ‘Hwaweon3’. This cultivaraveraged 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 grainquality traits are comparable to those of the recurrent parent. it has low protein content. The yield potential of ‘Hwaweon3’ ingrain is about 7.23 MT/ha at the ordinary fertilizer level comparable to that of Hwayeongbyeo. ‘Hwaweon3’ performed betterthan Hwayeongbyeo in cold tolerance-related trait in the cold water-irrigated plot in the Chuncheon sub-station. This is mainlydue to the introgressed segment from O. rufipogon on chromosome 1 harboring pe1.2 for panicle exsertion. ‘Hwaweon3’ couldbe used as a bridging line to enhance cold tolerance of japonica breeding lines.
참고문헌 (6)
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