고질소 및 저 칼륨 양액처리시 시금치내의 비타민C및 질소 대사의 변화 Changes in the Nitrate Assimilation and Ascorbic Acid Content of Spinach Plants Treatmented with Nutrient Solutions Containing High Nitrogen and Low Potassium원문보기
이 연구의 목적은 건강한 작물과 시들은 식물의 질소대사와 아스코리빈산 함량의 차이를 비교하는것에 있다. 시듬은 인공적으로 유도되었으며, 그방은 질소과다 시비 및 저칼륨 시비에 의한 것으로4개의 처리구를 두었다. 1N-1P-1K (control), 6N-1P-0K (0K), 6N-1P-0.5K (0.5K), and 6N-1P-2K (2K). 시듬 정도는 control, 0%; 2K, 10%; 0.5K, 40%; and 0K, 70%. 식물 생장에는 고질소 저 칼륨 처리구에서는 그리 큰 차이가 없었으며 질산태질소의 함량은 control 구와 비교하여 고 질소 처리구가 높았으며, 아스코리빈 산 함량은 고질소 처리구가 control구에 비하여 낮았음을 확인 할수 있었다.
이 연구의 목적은 건강한 작물과 시들은 식물의 질소대사와 아스코리빈산 함량의 차이를 비교하는것에 있다. 시듬은 인공적으로 유도되었으며, 그방은 질소과다 시비 및 저칼륨 시비에 의한 것으로4개의 처리구를 두었다. 1N-1P-1K (control), 6N-1P-0K (0K), 6N-1P-0.5K (0.5K), and 6N-1P-2K (2K). 시듬 정도는 control, 0%; 2K, 10%; 0.5K, 40%; and 0K, 70%. 식물 생장에는 고질소 저 칼륨 처리구에서는 그리 큰 차이가 없었으며 질산태질소의 함량은 control 구와 비교하여 고 질소 처리구가 높았으며, 아스코리빈 산 함량은 고질소 처리구가 control구에 비하여 낮았음을 확인 할수 있었다.
This study was conducted to determine the physiological differences betweenhealthy and wilted plants with respect to nitrate assimilation and ascorbic acid content. Wilting was artificially induced in spinach plants by treating the seeds with nutrient solution containing high nitrogen and low potass...
This study was conducted to determine the physiological differences betweenhealthy and wilted plants with respect to nitrate assimilation and ascorbic acid content. Wilting was artificially induced in spinach plants by treating the seeds with nutrient solution containing high nitrogen and low potassium. The plants were cultured in different plots 4 types of media: 1N-1P-1K (control), 6N-1P-0K (0K), 6N-1P-0.5K (0.5K), and 6N-1P-2K (2K). The rate of wilting among the plants was as follows: control, 0%; 2K, 10%; 0.5K, 40%; and 0K, 70%. This shows that under high nitrogen conditions, the lower the amount of potassium provided, higher was the rate of wilting. There were no differences in plant growth among the plants treated with different levels of potassium under high nitrogen conditions.The nitrate content in both the leaves and the roots was higher in plants grown under high nitrogen media than those in the control. Furthermore, the nitrate level decreased with increasing potassium concentration. The ascorbic acid content of spinach under high nitrogen conditions was lower than those of the control.
This study was conducted to determine the physiological differences betweenhealthy and wilted plants with respect to nitrate assimilation and ascorbic acid content. Wilting was artificially induced in spinach plants by treating the seeds with nutrient solution containing high nitrogen and low potassium. The plants were cultured in different plots 4 types of media: 1N-1P-1K (control), 6N-1P-0K (0K), 6N-1P-0.5K (0.5K), and 6N-1P-2K (2K). The rate of wilting among the plants was as follows: control, 0%; 2K, 10%; 0.5K, 40%; and 0K, 70%. This shows that under high nitrogen conditions, the lower the amount of potassium provided, higher was the rate of wilting. There were no differences in plant growth among the plants treated with different levels of potassium under high nitrogen conditions.The nitrate content in both the leaves and the roots was higher in plants grown under high nitrogen media than those in the control. Furthermore, the nitrate level decreased with increasing potassium concentration. The ascorbic acid content of spinach under high nitrogen conditions was lower than those of the control.
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제안 방법
This study was conducted to confirm whether or not unbalanced nutrients and high nitrogen, can induce wilting in spinach and to compare nitrogen assimilation between healthy and wilted plants.
이론/모형
Measurement of AsA content The AsA and dehydroascorbic acid (DHA) contents were measured using the hydrazine method (Park et al., 2006b). One gram of plant powder (homogenized in liquid nitrogen) was added to 10 mL of 5% (w/v) metaphosphoric acid, and the mixture placed in a shaker at 140 rpm for 1 h and thenpassed through a No.
Measurement of the mineral content The inorganic components were measured using the Walinga method (Walinga et al., 1989). Plants were digested as follows: 0.
2 filter paper. Nitrate was measured by the CFA method (Auto Analyzer 3: BRAN+LUEBBE) (Park et al., 2006a) (Scholl et al., 1974).
성능/효과
This study has therefore demonstrated that potassium prevents nitrogen absorption, thataddition of nitrogen increases the nitrate content in plants, and that the AsA content in plants can be decreased by increasing the nitrogen content.
참고문헌 (10)
Agro-Environment, R. 2004. Agro-Environment Research. Department of Agro-Environment, National Institute of Agricultural Science and Technology
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Maynard, D.N., A.V. Barker, P.L. Minotti, and N.H. Peck. 1976.Nitrate accumulation in vegetables. Advances in Agronomy 28:71-118
Park, Y.H., S.H. Park, and J.H. Park. 2006a. Continuous-Flow analysis for determination of nitrate in plant by using hydrazinecopper method. Korean Journal of Soil Science and Fertilizer 39(4):204-208
Park, Y.H., S.H. Park, J.H. Park, J.Y. Lee, B.C. Jang, and K.S. Lee.2006b. Changes of ascorbic acid and nitrate content in lettuce by unbalanced nutrient solution. The Korea Society of Crop Science 51 (1):107-111
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Scholl, R.L., J.E. Harper, and R.H. Hageman. 1974. Improvements of the nitrite color development in assays of nitrate reductase by phenazine methasulfate and zinc acetate. Plant Physiology 53:825-828
Walinga, I., W.V. Vark, V.J.G. Houba, and J.J. Vand der lee. 1989. Soil and Plant Analysis. Wageningen Agricultural University,Wagenningen, the Netherlands:264
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