• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Indian Journal of Weed Science >Crop-weed interactions under climate change
【24h】

Crop-weed interactions under climate change

机译：气候变化下的作物-杂草相互作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Weeds are major threat to agriculture and biodiversity as they out-compete crops and native species and contribute to land degradation. Changes in geographic distributions, abundances and life-cycles of weeds are the likely outcome of the effect of climate change. Natural evolution and certain specific characteristics such as short life cycles, dispersal mechanisms, may give the weeds a competitive advantage over less aggressive species under changing climate. Climate change may favour certain nativeplants to such an extent that they then become weeds. The dynamics of competition between weed and crop plants are affected by environmental conditions, and have been shown to change with atmospheric CO_2 concentration, temperature, precipitation and adaphic factors. Invasive weeds like Lantana and Parthenium may become more aggressive under climate change especially due to increases in atmospheric CO2. Growth at elevated CO_2 would result in anatomical, morphological and physiological changes that could influence herbicidal uptake rates, besides translocation and overall effectiveness. The physiological plasticity of weeds and their greater intraspecific genetic variation compared with most crops could provide weeds with a competitive advantage in achanging environment. There is a possibility that agricultural weed populations will evolve new traits in response to emerging climate and non-climate selection pressures.
机译：杂草对农业和生物多样性的主要威胁，因为它们与农作物和本地物种竞争激烈，并加剧了土地退化。杂草的地理分布，丰度和生命周期的变化是气候变化影响的可能结果。自然变化和某些特定特征（例如生命周期短，扩散机制）可能会给杂草提供竞争优势，使其在气候变化的情况下具有竞争优势。气候变化可能对某些本土植物有利，以至于它们随后成为杂草。杂草与农作物之间的竞争动态受环境条件的影响，并且已显示出随大气中CO_2浓度，温度，降水和适应因子的变化而变化。尤其是由于大气中二氧化碳的增加，在气候变化下，马tana丹和爬山虎等入侵杂草可能会变得更具侵略性。在高CO_2浓度下的生长会导致解剖，形态和生理变化，进而影响除草剂的吸收率，进而影响转位和总体有效性。与大多数农作物相比，杂草的生理可塑性及其种内遗传变异更大，可以在不断变化的环境中为杂草提供竞争优势。农业杂草种群有可能响应新出现的气候和非气候选择压力而发展出新的性状。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号