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Effect of Japanese foxtail (Alopecurus japonicus) at varying densities on the physiological characteristics of wheat

文献类型： 外文期刊

作者： Wang, Xiaolin 1 ; Xu, Xiaoming 3 ; Zhang, Zhuoya 2 ; Li, Gui 2 ;

作者机构： 1.Zhenjiang Inst Agr Sci Hilly Area Jiangsu Prov, Ecol Agr Res Off, Jurong, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China

3.Nanjing Agr Univ, Coll Life Sci, Nanjing, Peoples R China

关键词： Seeding rate; Alopecurus japonicus; photosynthetic characteristics; wheat

期刊名称：INTERNATIONAL JOURNAL OF PEST MANAGEMENT （ 影响因子：1.766； 五年影响因子：1.513 ）

ISSN： 0967-0874

年卷期：

页码：

收录情况： SCI

摘要： To evaluate the effect of Japanese foxtail (Alopecurus japonicus Steud.) at different densities on the photosynthetic physiology of wheat, "Yangmai 16" wheat was cultivated in a field using two sowing rates (150 kg ha(-1), conventional seeding rate; 225 kg ha(-1), high seeding rate) and with different densities of A. japonicus for two years. A. japonicus affected the physiological characteristics of wheat, such as its leaf photosynthetic rate, fluorescence parameters, Hill reaction activity, Rubisco activity, yield and yield components, to varying degrees. However, the physiological responses of wheat at different seeding rates varied; the effect of A. japonicus on wheat was more severe at the conventional seeding rate than at the high seeding rate. A. japonicus affected wheat leaf morphology and inhibited photosynthetic processes, leading to decreased PSII electron transport, energy metabolism and photosynthate accumulation, ultimately reducing wheat yield. An appropriate increase in the wheat seeding rate could improve specific leaf weight, maintain Rubisco activity, reduce photoinhibition, and alleviate the stress caused by A. japonicus.

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