• Korean Journal Plant Pathology
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• v.12 no.2
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• pp.202-208
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• 1996

1986년부터 1992년까지 전라북도와 경상남도에서 수집된 벼 흰잎마름병균 66균주를 국내의 4 판별품종에 대한 병원성을 조사한 결과, K1 균형이 18(27.3%) 균주, K2 균형이 2(3.0%)균주, K3 균형이 18(27.3%) 균주가 분리되었다. 그러나 K4는 발견되지 않았으며 2균주는 균형을 분류할 수 없었다. 이들 2균형은 5종류의 일반계 품종에 대한 병원성에 따라 19종류의 group으로 세분되었다. 국내 벼 흰잎마름병 균주는 일본이나 IRRI 판별품종과 동일한 유전자를 갖는 NIL로 균형이 분류되지 않는 균주가 각각 63.6%, 57.6%나 되어, 국내 벼 흰잎마름병균은 일본 및 IRRI 균형과 비교하기가 곤란하였다.

• Journal of the Korean Society of International Agriculture
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• v.31 no.3
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• pp.249-254
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• 2019

'Japonica 6' is a japonica rice variety developed from a cross between 'MS11', the beginning variety adaptable to tropical region, and 'IR86743-28-1-4', an elite line of high yield and good plant type by a Korea(RDA)-IRRI cooperative breeding program at IRRI in 2017. The growth duration of 'Japonica 6' is 121 days from sowing to harvest. It is 10 days later than that of the check variety 'MS11'. The culm length of 'Japonica 6' is 70 cm, and 1,000-brown rice grain weight is 26.7 g. It has a shorter culm and a larger grain. size than that of MS11. 'Japonica 6' is moderately resistant to blast disease but susceptible to bacterial blight, tungro virus and plant hoppers. The milled rice recovery rate of 'Japonica 6' is improved than that of 'MS11'. The head rice rate of 'Japonica 6' is significantly higher than that of 'MS11'. Yield of 'Japonica 6' is averagely 3.59 MT/ha of milled rice in 5 areas of the Philippines. The 'Japonica 6' was registered in Philippines and would be adaptable to the diverse regions of tropical Asia (Registration No in Philippines. BPI-NSIC-2017-Rc 484SR).