Paper Title:
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.

  Info
Periodical
Chapter
Chapter 1: Material Engineering and its Application
Edited by
Helen Zhang and David Jin
Pages
132-135
DOI
10.4028/www.scientific.net/AMR.366.132
Citation
G. W. Sun, C. Y. Jiang, H. C. Liu, S. W. Song, R. Y. Chen, "Effect of NH4+-N and NO3--N Ratio on the Growth and Quality of Bunching Onion under High Temperature Stress", Advanced Materials Research, Vol. 366, pp. 132-135, 2012
Online since
October 2011
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