Chen Guoqi, Huang Zeyue, An Kai, Chen Yang, Xue Jiahao
Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College/Research Institute of Rice Industrial Engineering Technology of Yangzhou University, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China.
Biology (Basel). 2024 Sep 7;13(9):704. doi: 10.3390/biology13090704.
Native weeds have a long history of adaptation to local environments. Understanding the relationship between the occurrence of native weeds and their life history traits is crucial for effective weed management and risk assessment of plant invasions. In this study, we surveyed native weed species and their dominance across 666 field sites in agricultural areas of Yangzhou City, China, and each site was 13.3 hectares in area. A total of 287 native weed species were recorded, referring to 63 families, among which 45% were 50-100 cm in plant height and 47% were of an erect life type. In terms of the proportions out of the total native weed occurrence dominance, Poaceae, Compositae, and Fabaceae weeds accounted for 30%, 13%, and 11%; liana and perennials both occupied 32%; and aquatic, hygrophyte, sun plant, and shade plant all occupied < 10%. Additionally, the proportions increased with increasing seed production per plant and with increasing weediness reported worldwide. Native weed groups holding moderate vegetative reproduction abilities, moderate seed sizes, or herbicide resistance showed higher proportions. Moreover, most of the native weeds surveyed were not succulent or thorny plants and did not hold thorns, awns, obvious hairs, or mucilage on their fruits.
本土杂草对当地环境具有长期的适应性。了解本土杂草的发生与其生活史特征之间的关系，对于有效的杂草管理和植物入侵风险评估至关重要。在本研究中，我们调查了中国扬州市农业区666个农田样地中的本土杂草物种及其优势度，每个样地面积为13.3公顷。共记录了287种本土杂草，分属63科，其中45%的株高为50-100厘米，47%为直立型生活型。就本土杂草发生优势度的比例而言，禾本科、菊科和豆科杂草分别占30%、13%和11%；藤本植物和多年生植物均占32%；水生植物、湿生植物、阳生植物和阴生植物均占不到10%。此外，这些比例随着单株种子产量的增加以及全球杂草发生率的增加而上升。具有中等营养繁殖能力、中等种子大小或抗除草剂能力的本土杂草类群比例更高。此外，所调查的大多数本土杂草不是肉质植物或多刺植物，其果实上没有刺、芒、明显的毛或黏液。
