Effect of NH₄⁺-N and NO₃^--N Ratio on the Growth and Quality of Bunching Onion under High Temperature Stress

Abstract:

The effects of different NH₄⁺-N to NO₃^--N ratio (NH₄⁺ /NO₃^-) (0, 1/8, 1/4 and 1/2) on growth and quality of bunching onion (Allium fistulosum L. var. caespitosum Makino) under high temperature stress (34°C/26°C, day/night) were studied in growth chamber by hydroponics. The results showed that the growth and quality of bunching onion were affected by NH4+ /NO3-. Plant weight and height, leaf number per plant were the highest in the treatment which NH4+ /NO3- was 1/8, and those in treatment without NH4+-N were higher than in other 2 treatments. With the NH4+ /NO3- increasing, nitrate concentration in bunching onion decreased. The concentration of vitamin C was the highest in the treatment which NH4+ /NO3- was 1/8, while concentration of soluble sugar, soluble protein and allicin were the highest in the treatment which NH4+ /NO3-was 1/2. Thus the growth and quality of bunching onion were better in the NH4+ /NO3- range of 1/8 to 1/4.

• Periodical: Advanced Materials Research (Volume 366)
• Pages: 132-135
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.366.132
• Online since: October 2011
• Authors: Guang Wen Sun, Cai Yong Jiang, Hou Cheng Liu, Shi Wei Song, Ri Yuan Chen
• Keywords: Bunching Onion, Growth, High-Temperature, Nitrogen Form, Quality

References

[1] J. Van der Boon, J.W. Steenhuizen, E.G. Steingrover. Growth and nitrate concentration of lettuce as affected by total nitrogen and chloride concentration NH4/NO3 ratio and temperature of the re-circulating nutrient solution. J. Hortic. Sci, Vol. 65(1990).

DOI: 10.1080/00221589.1990.11516060

[2] P. Santamaria, A. Elia. Producing nitrate-free endive heads: effects of nitrogen form on growth, yield, and ion composition of endive. J. Am. Hortic. Sci, Vol. 122(1997), pp.140-145.

DOI: 10.21273/jashs.122.1.140

[3] F. Montemurro, G. Capotorti, G. Lacertosa, D. Palazzo. Effects of urease and nitrification inhibitors application on urea fate in soil and nitrate accumulation in lettuce. J Plant Nutr, Vol. 21(1998), pp.245-252.

DOI: 10.1080/01904169809365399

[4] Z. Wang, S Li. Effects of N forms and rates on vegetable growth and nitrate accumulation. Pedosphere, Vol. 13(2003), pp.309-316.

[5] B. Chen, Z. Wang, S. Li, G. Wang, H. Song, X. Wang. Effects of nitrate supply on plant growth, nitrate accumulation, metabolic nitrate concentration and nitrate reductase activity in three leafy vegetables. Plant Sci. Vol. 167 (2004), pp.635-643.

DOI: 10.1016/j.plantsci.2004.05.015

[6] J. Li. Study on molybdenum blue method of L-VC test by spectrometry. Food Science, (2000) , pp.42-45. (in Chinese).

[7] X. Luo, X. Chai. Determination of nitrate content in vegetables by UV-spectrophotometric method. Journal of South China University of Tropical Agriculture Vol. 10 (2004), pp.13-16 (in Chinese).

[8] H. Li, Q. Sun, S. Zhao, W. Zhang. Principles and techniques of plant physiological biochemical experiment. Beijing : Higher Education Press. (2000) (in Chinese).

[9] H. Marschner. Mineral Nutrition of Higher Plants. London: Academic Press. (1995).

[10] K. Mengel, P. Robin, L. Salsnc. Nitrate reductase activity in shoot sand roots of maize seedlings as affected by the form of nitrogen nutrition and pH of the nutrition solution. Plant Physiol, Vol. 71(1983), pp.618-622.

DOI: 10.1104/pp.71.3.618

[11] C. Zhang, M. Gao, Y. Zhang, W. Tang. The effects of different nitrogen forms and their concentration combinations on the growth and quality of spinach. Journal of Nanjing Agricultural University Vol. 13(1990), pp.70-74. (in Chinese).

[12] Y. Zhang, X. Xu, X. Lin. Influence of different nitrogen levels on biomass, nitrate and oxalate accumulation in spinach. Pant Nutrition and Fertilizer Science, Vol. 10(2004), pp.494-498. (in Chinese).