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Potential Use of Sweet Potato (Ipomoea batatas (L.) Lam.) to Suppress Three Invasive Plant Species in Agroecosystems (Ageratum conyzoides L., Bidens pilosa L., and Galinsoga parviflora Cav.)

文献类型： 外文期刊

作者： Shen, Shicai 1 ; Xu, Gaofeng 1 ; Li, Diyu 1 ; Jin, Guimei 1 ; Liu, Shufang 1 ; Clements, David Roy 2 ; Yang, Yanxian 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Agr Environm & Resource Res Inst, Kunming 650205, Yunnan, Peoples R China

2.Trinity Western Univ, Biol Dept, 7600 Glover Rd, Langley, BC V2Y 1Y1, Canada

3.Charles Sturt Univ, Graham Ctr Agr Innovat, Wagga Wagga, NSW 2678, Australia

关键词： competitive crops; weed-crop competition; sweet potato; Ipomoea batatas (L.) Lam; Ageratum conyzoides L; Bidens pilosa L; Galinsoga parviflora Cav; antioxidant enzymes; de Wit replacement series

期刊名称：AGRONOMY-BASEL （ 影响因子：3.417； 五年影响因子：3.64 ）

ISSN： 2073-4395

年卷期： 2019 年 9 卷 6 期

页码：

收录情况： SCI

摘要： Sweet potato (Ipomoea batatas (L.) Lam.) is a logical candidate crop to suppress invasive plants, but additional information is needed to support its potential application as a suppressive ground cover. The current study utilized a de Wit replacement series incorporating five ratios of sweet potato grown in the field in combination with one of three invasive plants (Ageratum conyzoides L., Bidens pilosa L., and Galinsoga parviflora Cav.) in replicated 9 m(2) plots. Stem length, total biomass, and leaf area were higher for monoculture-grown sweet potato than these parameters for any of the invasive plants grown in monoculture. In mixed culture, the plant height, branch, leaf, inflorescence, seed, and biomass of all invasive plants were suppressed by sweet potato. The relative yield parameter indicated that intraspecific competition was greater than interspecific competition for sweet potato, while the reverse was true for invasive species. The net photosynthetic rate was higher for sweet potato than for B. pilosa and G. parviflora but not A. conyzoides. Superoxide dismutase and peroxidase activities of each of the three invasive plants were reduced in mixture with sweet potato. Our results demonstrated that these three invasive plants were significantly suppressed by sweet potato competition due to the rapid growth and phenotypic plasticity of sweet potato.

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