품종과 이앙시기별 엽 생장속도에 의한 벼의 유수분화시기 변화

• 영문명: Variation of Panicle Differentiation Stage by Leaf Growth According to Rice Cultivars and Transplanting Time
• 발행기관: 한국작물학회
• 저자명: 구본일(Bon-Il Ku) 강신구(Shin-Ku Kang) 상완규(Wan-Gyu Sang) 최민규(Min-Kyu Choi) 이규종(Kyu-Jone Lee) 박홍규(Hong-Kyu Park) 김영두(Young-Doo Kim) 김보경(Bo-Kyong Kim) 이점호(Jeom-Ho Lee)
• 간행물 정보: 『한국작물학회지』제58권 제4호, 353~361쪽, 전체 9쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2013.12.30

영문 초록

The time of panicle initiation change by transplanting date, and this change is affected by heading ecotype and seedling age. So we assessed the variations of panicle initiation, spikelet differentiation and heading date affected by transplanting dates, rice cultivars and seedling ages. And we compared the growth durations and meterological factors between chief growth stages. The differences of growth duration from transplanting date to spikelet differentiation by seedling age were 1~3 days in all transplanting of Unkwang, but it increased to 4 days in Hwayeong transplanting on May 1 and June 30, and Nampyeong transplanting on June 30. The growth durations from panicle initiation to heading of Unkwang and Hwayeong increased until transplanting time by May 31, and decreased thereafter. The growth durations of Nampyeong increased in transplanting on May 16 and May 31. In each transplanting, mean temperature of 30 days after heading was highest in early transplanting, but sunshine hours in the period were highest in transplanting on June 30 in Unkwang, in transplanting on June 15 in Hwayeong, and higher in transplanting on May 31 and June 15 in Nampyeong. The growth duration between spikelet differentiation and heading showed variation according to rice cultivars and transplanting date, Those were 22~26 days in Unkwang, 21~27 days in Hwayeong and 21~28 days in Nampyeong.

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키워드

rice panicle initiation stage spikelet differentiation stage heading date temperature