농가재배 주요 벼 품종들의 출수에 영향을 미치는 온도 반응과 한계일장 구명 연구

• 영문명: Studies on the Temperature Response and Critical Day-length Affecting the Heading Date of Major Cultivating Rice Varieties in Recent Korean Paddy Field
• 발행기관: 한국작물학회
• 저자명: 이현석(HyeonSeok Lee) 황운하(WoonHa Hwang) 정재혁(JaeHyeok Jeong) 양서영(SeoYeong Yang) 임연화(YeonHwa Lim) 최명구(MyoungGoo Choi) 정남진(NamJin Jeong) 이충근(ChungGen Lee) 최경진(KyungJin Choi)
• 간행물 정보: 『한국작물학회지』제64권 제4호, 323~335쪽, 전체 13쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2019.12.30

영문 초록

Rice is sensitive to day-length and short-day plants. It has a characteristic that the photosensitivity response required for flower bud differentiation decreases under long-day conditions. To identify critical photoperiod required for flower bud differentiation of major cultivation rice varieties, the average temperature was fixed at 28 ℃, and the day length was set at 12 hours and 10 minutes intervals from 13 hours to 14 hours 30 minutes. The critical photoperiod for each cultivar was set to day-length, where the daily cumulative response [(X(Critical Photoperiod)-Y(Set day-length))/(X(Critical Photoperiod)-12:00(Optimal Day-length)) × (28.0(Set Temperature)-10(Minimum Temperature))/(29.2(Maximum Temperature)-10(Minimum Temperature))] was the same for each day-length conditions. The flower bud differentiation time of all varieties was 32 days before heading at the average temperature of 28 ℃ conditions. The critical photoperiod of the early maturing type, such as Woonkwang, Odae, Koshihikari, Jopyeong, were 19:20, 18:14, 18:58, 17:30, respectively. Medium maturing type, such as Daebo, Haiami, Samdeok, were 16:08, 16:15, 16:55, respectively. Mid-late maturing type, such as Saenuri, Sindongjin, Chucheong, Samkwang, Ilpum, Saeilmi, Hwangkeumnuri, Dongjinchal, Ilmi, Hopum, Yeonghojinmi, were 15:58, 15:56, 16:36, 16:44, 15:35, 16:26, 15:33, 16:20, 16:29, 16:13, 15:41.

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day length heading response major rice varieties rice temperature