作物学报Issue(11)：2046-2051,6.DOI:10.3724/SP.J.1006.2014.02046
不同水氮处理对豫麦49-198籽粒抗氧化物含量的影响
Effects of Irrigation and Nitrogen on Antioxidant Contents in Yumai 49-198 Grains
摘要
Abstract
Two field experiments were carried out in Wenxian and Zhengzhou of Henan Province in 2012–2013 wheat season to study the effects of nitrogen (N) application rate and irrigation on total phenol, flavonoids, and carotenoid contents and antioxi-dant activity in winter wheat cultivar Yumai 49-198. In the N application range of 0–300 kg ha–1, all indices tested increased with increasing N rate and reached peak values under 300 kg ha–1. With the increase of irrigation frequency (0–2 irrigations), total phe-nol and flavonoids contents and antioxidant activity had the maximum values under one irrigation condition at jointing, whereas the carotenoid content varied across locations. The interaction between N application rate and irrigation had a significant effect on antioxidants in wheat grain. Treatments of irrigation at jointing stage plus N application of 240–300 kg ha–1 resulted in the high antioxidant content and antioxidant activity, whereas twice irrigation at jointing and anthesis stages plus N application of 240–300 kg ha–1 resulted in antioxidant accumulation. Total phenol and flavonoids contents were positively correlated with antioxidant activity, indicating that high contents of total phenol and flavonoids were favorable for high antioxidation. The correlations of grain antioxidant content with soil moisture and NO3–-N content varied in different soil layers. Generally, N fertilizer had the ef-fect on increasing total phenol and carotenoid contents and soil water had the effect on accumulating flavonoids.关键词
灌水/氮肥/冬小麦/抗氧化物质/籽粒Key words
Irrigation/Nitrogen fertilization/Winter wheat/Antioxidant/Grain引用本文复制引用
孙德祥,马冬云,王晨阳,李耀光,刘卫星,李秋霞,冯伟,郭天财..不同水氮处理对豫麦49-198籽粒抗氧化物含量的影响[J].作物学报,2014,(11):2046-2051,6.基金项目
本研究由国家“十二五”科技支撑计划项目(2012BAD04B07),国家现代农业产业体系建设专项(CARS-03)和国家公益性行业(农业)科研专项(201203031)资助。 （2012BAD04B07）
