文献类型： 外文期刊

作者： Liu, X. ⁴ ; Zong, T. ¹ ; Li, Y. ¹ ; Zhou, X. ¹ ; Bai, L. ¹ ;

作者机构： 1.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Hunan, Peoples R China

2.Hunan Acad Agr Sci, Biotechnol Res Ctr, Changsha 410125, Hunan, Peoples R China

3.Univ Kentucky, Dept Entomol, Lexington, KY 40546 USA

4.Collaborat Innovat Ctr Farmland Weeds Control, Loudi 417000, Hunan, Peoples R China

关键词： temperature; photoperiod; salinity stress; soil water content; burial depth

期刊名称：PLANTA DANINHA （ 影响因子：0.705； 五年影响因子：0.938 ）

ISSN： 0100-8358

年卷期： 2018 年 36 卷

页码：

收录情况： SCI

摘要： Carolina geranium (Geranium carolinianum) is an emerging invasive weed in rape and wheat fields in China. A better understanding of its germination and emergence ecology will enable the development of integrated weed control strategies. In this study, we investigated the effects of temperature, photoperiod, soil water content, salinity, and burial depth, on germination and emergence of Carolina geranium. Germination percentages were over 74% under 15/20 and 20/25 degrees C night/day temperature regimes. Germination rate was independent of light/dark regime. Increasing salinity reduced germination of Carolina geranium from 81.1% at 0 mM to 0% at 160 mM NaCl. Seeds germination was peaked at 50% soil moisture, but was completely inhibited at < 20% and > 90%. The seedling emergence above 82.2% was observed when seeds were placed at a depth from 0 to 1 cm, and no seedlings emerged from seeds placed at a depth of 7 cm. Current work provide the basic information to effectively prevent and control this invasive weed in Chinese rape and wheat fields.