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A new strategy for controlling invasive weeds: selecting valuable native plants to defeat them

文献类型： 外文期刊

作者： Li, Weihua 1 ; Luo, Jianning 2 ; Tian, Xingshan 3 ; Chow, Wah Soon 4 ; Sun, Zhongyu 1 ; Zhang, Taijie 1 ; Peng, Shaoli 1 ;

作者机构： 1.S China Normal Univ, Guangdong Prov Key Lab Biotechnol Plant Dev, Key Lab Ecol & Environm Sci Guangdong Higher Educ, Sch Life Sci, Guangzhou 510631, Guangdong, Peoples R China

2.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou 510640, Guangdong, Peoples R China

3.Guangdong Acad Agr Sci, Guangdong Prov Key Lab High Technol Plant Protect, Plant Protect Inst, Guangzhou 510640, Guangdong, Peoples R China

4.Australian Natl Univ, Div Plant Sci, Res Sch Biol, Coll Med Biol & Environm, Acton, A

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2015 年 5 卷

页码：

收录情况： SCI

摘要： To explore replacement control of the invasive weed Ipomoea cairica, we studied the competitive effects of two valuable natives, Pueraria lobata and Paederia scandens, on growth and photosynthetic characteristics of Ipomoea cairica, in pot and field experiments. When Ipomoea cairica was planted in pots with Pueraria lobata or Paederia scandens, its total biomass decreased by 68.7% and 45.8%, and its stem length by 33.3% and 34.1%, respectively. The two natives depressed growth of the weed by their strong effects on its photosynthetic characteristics, including suppression of leaf biomass and the abundance of the CO2-fixing enzyme RUBISCO. The field experiment demonstrated that sowing seeds of Pueraria lobata or Paederia scandens in plots where the weed had been largely cleared produced 11.8-fold or 2.5-fold as much leaf biomass of the two natives, respectively, as the weed. Replacement control by valuable native species is potentially a feasible and sustainable means of suppressing Ipomoea cairica.

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