벼 도열병 저항성 신품종 ‘화원5호’
A New Rice Variety ‘Hwaweon 5’ with Durable Resistance to Rice Blast
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‘Hwaweon 5’ was developed from a cross between the African upland cultivar, ‘Moroberekan’ and ‘Ilpumbyeo’ based on marker-aided backcross selection. The recurrent parent ‘Ilpumbyeo’ is a high grain quality cultivar with medium to late maturity. ‘Hwaweon 5’ is nearly isogenic to ‘Ilpumbyeo’ except Moroberekan introgressed segments on chromosomes 1, 4 and 6. The Moroberekan segment on Chromosome 4 has the resistance gene for blast. 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) from 2008 to 2009. This cultivar was registered to NSMO designated as ‘Hwaweon 5’. This cultivar averaged 78 cm in culm length and has medium growth duration. Milled rice of ‘Hwaweon 5’ is translucent and the grain quality traits are comparable to those of the recurrent parent. It has low protein content. The yield potential of ‘Hwaweon 5’ in grain was about 6.53 MT/ha at the ordinary fertilizer level for two years. This variety showed highly resistance reaction at the blast nursery test at four locations and also at the sequential planting method. This resistance is due to the gene designated as Pi45(t)on chromosome 4 from Moroberekan. The Pi45(t) gene would be useful in enhancing resistance to blast in rice breeding program.
Abstract
‘Hwaweon 5’ was developed from a cross between the African upland cultivar, ‘Moroberekan’ and ‘Ilpumbyeo’ based on marker-aided backcross selection. The recurrent parent ‘Ilpumbyeo’ is a high grain quality cultivar with medium to late maturity. ‘Hwaweon 5’ is nearly isogenic to ‘Ilpumbyeo’ except Moroberekan introgressed segments on chromosomes 1, 4 and 6. The Moroberekan segment on Chromosome 4 has the resistance gene for blast. 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) from 2008 to 2009. This cultivar was registered to NSMO designated as ‘Hwaweon 5’. This cultivar averaged 78 cm in culm length and has medium growth duration. Milled rice of ‘Hwaweon 5’ is translucent and the grain quality traits are comparable to those of the recurrent parent. It has low protein content. The yield potential of ‘Hwaweon 5’ in grain was about 6.53 MT/ha at the ordinary fertilizer level for two years. This variety showed highly resistance reaction at the blast nursery test at four locations and also at the sequential planting method. This resistance is due to the gene designated as Pi45(t)on chromosome 4 from Moroberekan. The Pi45(t) gene would be useful in enhancing resistance to blast in rice breeding program.
참고문헌 (17)
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