Possibility of Drought stress Indexing by Chlorophyll Fluorescence Imaging Technique in Red Pepper (Capsicum annuum L.)

Abstract

The objectives of this study focused on measuring chlorophyll fluorescence related to drought stress comparing some parameters. Almost parameters were declined although they were not significant on the basis of mean values of fluorescence of total leaf area. While the ratio of fluorescence intensity variable chlorophyll (F V ) to fluorescence intensity maximal chlorophyll (F M ) was not changed, the effective quantum yield of photochemical energy conversion in photosystemII (ΦPSII) and chlorophyll fluorescence decrease ratio (R fd ) were slightly reduced, indicating inhibition of the electron transport from quinone bind protein A (Q A ) to quinone bind protein B (Q B ). Some parameters such as non-photochemical quenching rate (NPQ_ LSS ) and coefficients of non-photochemical quenching of variable fluorescence (qN) in mid-zone of leaf and near petiole zone leaf were significantly enhanced within 4 days after drought stress, which can be used as physiological stress parameters. Decrease in ΦPSII could was significantly measured in all leaf zones. In conclusion, three parametric evidences for chlorophyll fluorescence responses such as ΦPSII, NPQ, and qN insinuated the possibility of photophysiological indices under drought stress.

Photochemical Response Analysis on Drought Stress for Red Pepper (Capsiumannuum L.)

“…고추는 국내에 17세기초 전래되어 재배하고 있으며 전국 에서 연간 1조 1,096억원 가량 생산되는 작물로 채소작물 중 1위를 차지하고 있는 주요 작물이다 (Yoo et al, 2012). (Duysens and Sweers, 1963).…”

“…(Duysens and Sweers, 1963). 지금까지 국내에 영상화 장치 를 이용한 엽록소 형광반응 분석을 통해 식물의 광화학적 특성 해석 관련 연구가 시도되어 왔다 (Yoo, 2007;Park et al, 2010;Yoo et al, 2012) (Genty et al, 1989), OJIP 방식을 이용한 Drought factor index (DFI)라는 한발스트레스 지표가 최근 도입되 어 사용되고 있다 (Oukarroum et al, 2007). …”

Effect of Rooting Promoter Treatments on Cutting and Growth of Sedum takesimense

“…이를 보충하기 위해 엽록소 형광값을 조사하여 함량과 활성을 같이 알아보는 연구들이 진행되고 있다(Son et al, 2012). 식물은 생육하는 동안 주변 환경의 변화로 스트레스를 받으면 광합성을 하는 기관에 직•간접적으로 영향을 미치게 되며, 이를 알아보기 위해 엽록소 형광 최대 광화학적 효율(F v /F m , maximum quantum yield)이 식물 스트레스의 유용한 지표 로 사용되고 있다(Yoo et al, 2012).…”

Application of Chlorophyll a Fluorescence Imaging Analysis for Selection of Rapid Frozen Sweet Persimmon Fruits

“…, 식재위치 및 착과방향 (Kang et al, 2014), 엽록소 형광 반응 (Yoo et al, 2012(Yoo et al, , 2013 (Govindjee, 1995;Strasser et al, 2000Strasser et al, , 2004Maxwell and Johnson, 2000;Mosenqvist and Kooten, 2003;Papageorgiou et al, 2007;Baker, 2008;Lazár and Schansker, 2009;Lee et al, 2014). (Govindjee, 1995(Govindjee, , 2004.…”