Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 59, Issue 8, Pages 4198-4207Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf1048904
Keywords
Brassica rapa; Brassica juncea; nitrate; ammonium; photosynthetic active radiation; glucosinolates; flavonoids; carotenoids; chlorophylls
Ask authors/readers for more resources
The effect of three different nitrogen (N) supply forms differing in their ammonium-to-nitrate (NH4:NO3) ratio (100% NH4, 50% NH4 + 50% NO3, 100% NO3) under three different levels of daily photosynthetic active radiation (PAR) (low, 5.0; medium, 6.8; high, 9.0 mol m(-2) day(-1)) on a range of desirable health-promoting phytochemicals in Brassica rapa subsp. nipposinica var. chinoleifera and Brassica juncea was determined. The 100% NH4 supply under medium PAR levels led to the highest concentration of glucosinolates based on a low nitrogen/sulfur ratio as well as high levels of carotenoids in the leaves of both Brassica species. However, the 100% NH4 supply under low and medium PAR levels resulted in low concentrations of flavonoids based on high N concentration in the leaves. Thus, the data provided here have strong implications for crop management strategies aimed at optimizing both the concentration and composition of a range of phytochemicals.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available