College of Water Sciences, Beijing Normal University, Beijing, 100875, China.
Research Center for Biodiversity, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
Sci Rep. 2017 Mar 13;7(1):157. doi: 10.1038/s41598-017-00153-4.
Herbicides have long-term effects on the vegetative parts and reproduction of plants; however, the carry-over effects of herbicides on the F1 generation of invasive plants remain unclear. The objectives of this work were to investigate the germination and growth of the F1 generation of A. retroflexus, an invasion plant, treated by sublethal herbicides. The results demonstrated that atrazine or tribenuron-methyl had carry-over effects on the F1 generation of A. retroflexus. Atrazine or tribenuron-methyl exposure during the vegetative and reproductive periods significantly inhibited the germination and growth of the F1 generation; a lower sublethal dose of atrazine or tribenuron-methyl did not weaken the inhibition of germination or growth of the F1 generation. Our results suggest that although herbicides have a carry-over inhibition effect on the F1 generation of invasive plants, they may have a more serious carry-over effect on native plants and cause changes in weed species composition and weed diversity.
除草剂对植物的营养器官和繁殖器官具有长期影响；然而，除草剂对入侵植物 F1 代的残留效应尚不清楚。本研究的目的是调查莠去津或苯磺隆处理的入侵植物空心莲子草 F1 代的萌发和生长情况。结果表明，莠去津或苯磺隆对空心莲子草 F1 代具有残留效应。在营养生长期和生殖生长期暴露于莠去津或苯磺隆会显著抑制 F1 代的萌发和生长；较低的莠去津或苯磺隆亚致死剂量不会削弱对 F1 代萌发或生长的抑制作用。我们的结果表明，尽管除草剂对入侵植物的 F1 代具有残留抑制作用，但它们可能对本地植物具有更严重的残留效应，并导致杂草物种组成和杂草多样性发生变化。
