과습에 따른 콩 광합성 관련 형질 반응

• 영문명: Responses of Photosynthetic Characters to Waterlogging in Soybean [Glycine max (L.) Merrill]
• 발행기관: 한국작물학회
• 저자명: 이재은(Jae-Eun Lee) 김홍식(Hong-Sig Kim) 권영업(Young-Up Kwon) 정건호(Gun-Ho Jung) 이춘기(Chun-Ki Lee) 윤홍태(Hong-Tai Yun) 김정곤(Chung-Kon Kim)
• 간행물 정보: 『한국작물학회지』제55권 제2호, 111~118쪽, 전체 8쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2010.06.30

영문 초록

Stress due to excess water is one of the most limiting factor for soybeans to high yield under wet climates. This study aimed to identify the photosynthetic responses of soybeans to waterlogged growing condition with 5 soybean varieties by waterlogging for 10 days at V5 and R2 stage, respectively. Chlorophyll fluorescence decreased more rapidly at R2 stage waterlogging than at V5 stage waterlogging in all soybean tested varieties. The degree of recovery was much more in Pungsannamulkong and Muhan-kong(95~97% of control) than in Jangyeobkong and Myung-junamulkong at 5 days after waterlogging. Photosynthetic rate, transpiration and stomatal conductance were also in-creased more rapidly in Pungsannamulkong and Muhan-kong than in Jangyeobkong and Myungjunamulkong after waterlogging irrespective of waterlogging stages. As the result of multiple regression analysis in order to identify the effects of stomatal conductance and transpiration to the photosynthetic rate, the R2 value of stomatal conductance in control and waterlogging treatment was 0.7293 and 0.7582, respectively. If the transpiration, another dependent variable, was added to the regression formula, there was not so big difference in the variation of photosynthetic rate. This result means that if just one factor of them(the stomatal conductance and transpiration) be measured in the case of waterlogged condition, the changes of photosynthetic rate can be estimated.

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키워드

soybean waterlogging fluorescence photosynthetic rate stomatal conductance transpiration