파종시기별 생육일수 및 적산온도 변화가 콩의 개화, 등숙 및 수량에 미치는 영향

• 영문명: Effects of Growth Period and Cumulative Temperature on Flowering, Ripening and Yield of Soybean by Sowing Times
• 발행기관: 한국작물학회
• 저자명: 이재은(Jae Eun Lee) 정건호(Gun Ho Jung) 김성국(Sung Kook Kim) 김민태(Min Tae Kim) 신수현(Su Hyeon Shin) 전원태(Weon Tai Jeon)
• 간행물 정보: 『한국작물학회지』제64권 제4호, 406~413쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2019.12.30

영문 초록

The purpose of this research was to analyze the effect of different sowing times on the flowering and maturing of major soybean cultivars by varying day length and temperature in the central plain region. The average of growth period and cumulative temperature in five test cultivars by sowing times were 121 days and 2,972°C on June 1, respectively and gradually decreased to 85 days, 2,042°C, respectively on July 20. Analysis of the flowering response according to the sowing times showed that flowering was greatly influenced by the decrease of photoperiod until the sowing on July 10, and the minimum number of days for flowering were 27 days, 36 days, respectively in early and mid-rate maturing type in the central plain region. Daepung 2 is classified to the same ecotype with Daewonkong, the total number of growing days was not different between two cultivars, but ripening period (R2-R6) was longer by 5 days and yield was higher by 11% in Daepung 2. The maturity rate was also high and safe enough to maintain more than 90% through the entire sowing times. This ecological characteristic can be usefully applied as a section index for breeding environmental stress resistant and high yielding soybean varieties. The yield of 4 domestic cultivars (except TI196944) sowing on July 20 were 85~92% levels compared to sowing on June 20.

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키워드

cumulative temperature growth period seed quality sowing tine yield