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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국육종학회 한국육종학회지 한국육종학회지 제38권 제5호
발행연도
2006.1
수록면
358 - 365 (8page)

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This study was carried out to investigate the cultural conditions for optimizing kernel greenness in order to obtain basicinformation for breeding and cultivation of green-kerneled rice varieties. Thirty-days-old seedlings of two green-kerneled varieties,Hexi41 (China) and Saengdongchalbyeo (Korea) and one regular variety, Ilpumbyeo, were transplanted on 24 May (early), 9 June2O5-K2O=6-8-8 kg/10a(), 12-8-8kg/10a, and 18-8-8kg/10a. Panicles were sampled from 20 days after heading (DAH) to 50 DAH with a five-day interval. The greenness of hulledrice was measured by colorimeter (MINOLTA CR-200). Kernel greenness of Saengdongchalbyeo was the highest with a greennessscore of -10.09 in medium planting time with medium N-fertilization, which 3.54 times darker than that of Hexi41 which showedthe greenness score of -2.85. Kernel greenness was significantly affected by planting time and N-fertilizer level in Hexi41. On theother hand, kernel greenness of Saengdongchalbyeo was not affected by cropping season and N-fertilizer level, indicating thatSaengdongchalbyeo might be a better germplasm source in breeding program for green-kerneled rices. Two green-kerneled variet-ripening stage, indicating that the kernel greenness maintained under low air temperature less than 21oC. Fourty days after headingseemed to be the optimal harvesting time which assure the highest yield and proper kernel-greenness. However, kernel greennesswas significantly affected by heading dates, and thus late heading followed by low temperature during ripening was likely to be abasic requirement to ensure the kernel greenness.

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