중만생 복합내병 다수성 발아현미용 거대배아미 ‘큰품’

‘Keunpum’: A Mid-Late Maturing, High Yielding, Giant Embryo Rice Cultivar with Resistance to Multiple Diseases and Used as Germinated Brown Rice

‘Keunpum’ is a mid-late maturing, high yielding, giant embryo rice (Oryza sativa L.) cultivar which is adapted to central plainsand was developed to be used as (germinated) brown rice. It is resistant to multiple diseases with a good grain quality. This cultivar wasderived by crossing a giant embryo rice variety ‘Keunnun’ and a mid-late maturing, multi-disease resistant rice cultivar ‘Samkwang’-it hasgood palatability of cooked rice. The growth period of this cultivar is approximately 117 d from seeding to heading, with a culm lengthof 88 ㎝, panicle length of 20 ㎝, 13 panicles per hill, 136 spikelets per panicle, and 1,000-grain weight of 19.1 g brown rice. This varietyhas low tolerance to cold stress and premature germination similar to ‘Keunnun’ but exhibits high resistance to lodging. In addition, ‘Keunpum’is resistant to bacterial blight (race K1, K2, K3), rice stripe virus, and is moderately resistant to leaf and neck blast. Its average milled riceyield for three years reached 5.34 MT/ha, which is 10% higher than that of ‘Keunnun’. In the brown and germinated brown rice of thiscultivar, the total dietary fiber content are 6.45% and 6.71%, and the GABA (γ-amino butyric acid) content are 6.61 and 39.47 mg/100g, respectively. In addition, the total contents of polyphenol, flavonoid, and tannin were higher in ‘Keunpum’ brown rice than in ‘Keunnun’. The DPPH and ABTS radical scavenging activities were 75.23, 116.08 mg TE/100g, respectively. These functional components and antioxidantactivities play an important role in inhibiting diseases and the aging process of the human body. Therefore, it is expected to be used asa basic data in the manufacture of secondary processed products using germinated brown rice (Grant No. 7684).