Optimized nitrogen fertilizer application mode increased culms lignin accumulation and lodging resistance in culms of winter wheat

被引：62
作者：
Chen, Xiaoguang [1 ]
Wang, Jing [1 ]
Wang, Zhenlin [2 ]
Li, Wenyang [3 ]
Wang, Chengyu [4 ]
Yan, Suhui [3 ]
Li, Hongmin [1 ]
Zhang, Aijun [1 ]
Tang, Zhonghou [1 ]
Wei, Meng [1 ]
机构：
[1] Xuzhou Inst Agr Sci Xuhuai Dist Jiangsu Prov, Xuzhou 221121, Jiangsu, Peoples R China
[2] Shandong Agr Univ, State Key Lab Crop Biol, Tai An 271018, Shandong, Peoples R China
[3] Anhui Sci & Technol Univ, Agron Coll, Fengyang 233100, Anhui, Peoples R China
[4] Anhui Agr Univ, Hefei 230000, Anhui, Peoples R China
来源：
FIELD CROPS RESEARCH | 2018年 / 228卷
基金：
中国国家自然科学基金;
关键词：
Lignin; Lodging resistance; Enzyme activity; Nitrogen fertilizer application mode; Winter wheat; GROWTH; YIELD; BIOSYNTHESIS; GENOTYPES; CULTIVAR; GRAIN; STEM;
D O I：
10.1016/j.fcr.2018.08.019
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The present study used both winter wheat cultivars Jimai 22 (lodging-resistant cultivar) and Yannong 19 (lodging-susceptible cultivar) to investigate the effect of optimized nitrogen fertilizer application on lignin accumulation, its related enzyme activities in the basal second intemode, and the breaking strength and culm lodging resistance index (CLRI) in winter wheat. Results showed that optimized nitrogen fertilizer application rates significantly increased the phenylalanine ammonia-Iyase (PAL), tyrosine ammonia-lyase (TAL) and peroxidase (POD) activities as well as lignin accumulation, the breaking strength and CLRI. Lignin accumulation and CLRI could be significantly increased by shifting nitrogen from base to topdressing under identical nitrogen application rates. Lignin accumulation, PAL, TAL and POD activities, the breaking strength and CLRI were significantly increased by an appropriate increase of the booting fertilizer proportion (DC 4.1) when identical base and topdressing ratios. These results suggested that the nitrogen fertilizer application rate of 202.5 kg hm(-2) with the ratio of 4:4:2 for base (DC 0.0), elongation (DC 3.0) and booting stage (DC 4.1) significantly increased the lodging resistance of winter wheat in Xuhuai district.
引用
收藏
页码：31 / 38
页数：8
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