Studies on the leaf color and absorbance in visible range of rice plant
1986
Park, K.B. (Kyongnam Provincial Rural Development Administration, Chinju (Korea R.)) | Park, R.K. (Rural Development Administration, Suwon (Korea R.). Crop Experiment Station)
The rice leaf color, which was one of main factors to determine application time of fertilizers, was analyzed in visible region, while the distinction of photosynthetic pigments controlling the rice leaf color was separated by T.L.C. The light absorption peaks of ethyl ether extracts of rice leaf blades were occurred in 413, 432, 453 and 662nm. Especially, the maximal light absorption was 432nm in blue and 662nm in red region. The both light absorption ratios (blue to red region) was not greatly different among rice eco-types, whereas decreasing tendency in increased fertilization was observed. There was a significant negative correlation between the both light absorption ratios and the values of color chart, and the content of chlorophyll in rice leaf blades
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