Abstract The success of invasive plants can be better understood by comparing their traits with closely related native species. This study compared germination ecology and seedling growth of invasive Ageratum houstonianum and Adenostemma conyzoides with co‐occurring and allied native Adenostemma lavenia . Seeds were germinated under a different light (12 h photoperiod/complete dark), temperatures (low: 25°C/15°C day/night, and high: 30°C/20°C), and different levels of water stress (−0.1, −0.25, −0.5, −0.75, and −1 MPa). Seedlings were grown to determine biomass allocation, relative growth rate (RGR), plant height, and number of leaves. The seed mass and size of native A. lavenia were higher than those of invasive species. Seeds of all species were positively photoblastic. At low temperature and in all levels of water stress, all measured parameters except mean germination time were the highest in A. houstonianum . However, at high temperature, there was no significant difference in germination percentage between A. houstonianum and A. lavenia . No germination of A. conyzoides and A. lavenia was recorded beyond −0.5 MPa water potential, but seeds of A. houstonianum germinated up to −0.75 MPa. A. houstonianum had higher root mass fraction, root‐to‐shoot ratio, and number of leaves than the other two species. Stem mass fraction and the height of seedling were highest in A. conyzoides . The RGR was 1.6 times higher in invasive Ageratum species than the native species; it was slightly higher in A. houstonianum than in A. conyzoides . Overall, the results suggest that germination traits and seedling growth performance can be used as predictors of a species' invasiveness.
{"title":"Germination ecology and seedling growth of invasive <i>Ageratum</i> species and allied native <i>Adenostemma lavenia</i>","authors":"Hemanti Airi, Anuj Dangol, Ashmita Shrestha, Nisha Kharel, Anjana Devkota, Lal Bahadur Thapa, Bharat Babu Shrestha","doi":"10.1111/wbm.12276","DOIUrl":"https://doi.org/10.1111/wbm.12276","url":null,"abstract":"Abstract The success of invasive plants can be better understood by comparing their traits with closely related native species. This study compared germination ecology and seedling growth of invasive Ageratum houstonianum and Adenostemma conyzoides with co‐occurring and allied native Adenostemma lavenia . Seeds were germinated under a different light (12 h photoperiod/complete dark), temperatures (low: 25°C/15°C day/night, and high: 30°C/20°C), and different levels of water stress (−0.1, −0.25, −0.5, −0.75, and −1 MPa). Seedlings were grown to determine biomass allocation, relative growth rate (RGR), plant height, and number of leaves. The seed mass and size of native A. lavenia were higher than those of invasive species. Seeds of all species were positively photoblastic. At low temperature and in all levels of water stress, all measured parameters except mean germination time were the highest in A. houstonianum . However, at high temperature, there was no significant difference in germination percentage between A. houstonianum and A. lavenia . No germination of A. conyzoides and A. lavenia was recorded beyond −0.5 MPa water potential, but seeds of A. houstonianum germinated up to −0.75 MPa. A. houstonianum had higher root mass fraction, root‐to‐shoot ratio, and number of leaves than the other two species. Stem mass fraction and the height of seedling were highest in A. conyzoides . The RGR was 1.6 times higher in invasive Ageratum species than the native species; it was slightly higher in A. houstonianum than in A. conyzoides . Overall, the results suggest that germination traits and seedling growth performance can be used as predictors of a species' invasiveness.","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":"27 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Néstor Daniel Sotelo‐Cerón, Ignacio Eduardo Maldonado‐Mendoza, Karla Yeriana Leyva‐Madrigal, Juan Carlos Martínez‐Álvarez
Abstract Field bindweed ( Convolvulus arvensis L.) has been described as one of the most noxious weeds in agricultural soils worldwide. Furthermore, its control by conventional herbicides can promote the emergence of resistant biotypes as well as negatively affect human health and the environment. An ecological alternative for weed management is the use of phytopathogenic fungi. In this study, 68 fungal strains were isolated from C. arvensis leaves exhibiting symptoms of fungal disease. Seven isolates were confirmed as pathogenic to C. arvensis in a detached leaf assay. Filtered cell‐free cultures (FCFC) of these seven isolates were then evaluated. FCFC of TV1 and ET4 showed the best results, inhibiting seedling dry weight by up to 48% in vivo and shoot dry weight up to 35% in growth chamber assays. Phytopathogenic evaluation of both isolates showed disease severity >67%, and an ability to inhibit root dry weight by up to 80%. Inhibitory effects were not observed on chickpea, bean, sorghum, maize, or tomato plants, suggesting pathogenic specificity of TV1 and ET4 to field bindweed. Molecular identification revealed a high similarity of TV1 (100% identity) with Macrophomina phaseolina , and a high similarity of ET4 with Alternaria alternata (99.8% identity). To the best of our knowledge, this is the first report of M. phaseolina showing pathogenicity against field bindweed worldwide, and the first report for A. alternata in Mexico. The results reveal that these fungi and/or their FCFC have the potential to be used as bioherbicidal agents against C. arvensis .
{"title":"Isolation, selection, and identification of phytopathogenic fungi with bioherbicide potential for the control of field bindweed (<i>Convolvulus arvensis</i> L.)","authors":"Néstor Daniel Sotelo‐Cerón, Ignacio Eduardo Maldonado‐Mendoza, Karla Yeriana Leyva‐Madrigal, Juan Carlos Martínez‐Álvarez","doi":"10.1111/wbm.12275","DOIUrl":"https://doi.org/10.1111/wbm.12275","url":null,"abstract":"Abstract Field bindweed ( Convolvulus arvensis L.) has been described as one of the most noxious weeds in agricultural soils worldwide. Furthermore, its control by conventional herbicides can promote the emergence of resistant biotypes as well as negatively affect human health and the environment. An ecological alternative for weed management is the use of phytopathogenic fungi. In this study, 68 fungal strains were isolated from C. arvensis leaves exhibiting symptoms of fungal disease. Seven isolates were confirmed as pathogenic to C. arvensis in a detached leaf assay. Filtered cell‐free cultures (FCFC) of these seven isolates were then evaluated. FCFC of TV1 and ET4 showed the best results, inhibiting seedling dry weight by up to 48% in vivo and shoot dry weight up to 35% in growth chamber assays. Phytopathogenic evaluation of both isolates showed disease severity >67%, and an ability to inhibit root dry weight by up to 80%. Inhibitory effects were not observed on chickpea, bean, sorghum, maize, or tomato plants, suggesting pathogenic specificity of TV1 and ET4 to field bindweed. Molecular identification revealed a high similarity of TV1 (100% identity) with Macrophomina phaseolina , and a high similarity of ET4 with Alternaria alternata (99.8% identity). To the best of our knowledge, this is the first report of M. phaseolina showing pathogenicity against field bindweed worldwide, and the first report for A. alternata in Mexico. The results reveal that these fungi and/or their FCFC have the potential to be used as bioherbicidal agents against C. arvensis .","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":"26 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135405678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract There was few research on the utilization and development of weedy rice. Some weedy rice has remarkable good characteristics as forage in some soil which is difficult to plant crops and pastures. In this study, two weedy rice lines of japonica and indica subspecies with high ratooning ability (Xijing, japonica ; Gaoxian, indica ) were used to study the possibility of their forage utilization and related suitable cultivation methods. Three different stubble heights of first season were set in 2018 and 2019, and three cutting times of first season (heading stage, milk stage, and waxy ripening stage) were set in 2019. The ratoon grass was harvested 40 days after the first season harvest. For japonica weedy rice line Xijing, its grass yield was significantly lower than that of indica weedy rice line Gaoxian. The dry matter yield of first season grass plus ratoon grass of Gaoxian with the first season harvested at milk stage was the highest of all. The total digestible dry matter yield (first season grass plus ratoon grass) of Gaoxian with 15 cm cutting stubble of first season was higher than those of stubble 30 and 45 cm treatments ( p < .05). In conclusions, indica weedy rice line Gaoxian, with high biomass of first season and good ratooning ability, had the good potential for forage development by harvesting first season at milk stage with 15 cm stubble height.
{"title":"Investigation on the forage utilization of <i>indica</i> and <i>japonica</i> weedy rice with strong ratooning ability","authors":"Chenfei Dong, Nengxiang Xu","doi":"10.1111/wbm.12274","DOIUrl":"https://doi.org/10.1111/wbm.12274","url":null,"abstract":"Abstract There was few research on the utilization and development of weedy rice. Some weedy rice has remarkable good characteristics as forage in some soil which is difficult to plant crops and pastures. In this study, two weedy rice lines of japonica and indica subspecies with high ratooning ability (Xijing, japonica ; Gaoxian, indica ) were used to study the possibility of their forage utilization and related suitable cultivation methods. Three different stubble heights of first season were set in 2018 and 2019, and three cutting times of first season (heading stage, milk stage, and waxy ripening stage) were set in 2019. The ratoon grass was harvested 40 days after the first season harvest. For japonica weedy rice line Xijing, its grass yield was significantly lower than that of indica weedy rice line Gaoxian. The dry matter yield of first season grass plus ratoon grass of Gaoxian with the first season harvested at milk stage was the highest of all. The total digestible dry matter yield (first season grass plus ratoon grass) of Gaoxian with 15 cm cutting stubble of first season was higher than those of stubble 30 and 45 cm treatments ( p < .05). In conclusions, indica weedy rice line Gaoxian, with high biomass of first season and good ratooning ability, had the good potential for forage development by harvesting first season at milk stage with 15 cm stubble height.","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136358979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Weed control in wheat with pyroxasulfone and its combinations with other herbicides","authors":"R. S. Chhokar, Ramesh K. Sharma","doi":"10.1111/wbm.12268","DOIUrl":"https://doi.org/10.1111/wbm.12268","url":null,"abstract":"","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47107562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Screening, identification, and observation of infection process of a herbicidal fungal strain\u0000 HY\u0000 ‐02","authors":"Xiang Li, Haixia Zhu","doi":"10.1111/wbm.12266","DOIUrl":"https://doi.org/10.1111/wbm.12266","url":null,"abstract":"","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48411630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficacy and rates of diquat for reducing invasive knotweeds and potential for sequential use with imazapyr","authors":"L. Kuehne, David Heimer","doi":"10.1111/wbm.12265","DOIUrl":"https://doi.org/10.1111/wbm.12265","url":null,"abstract":"","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41961313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hidenori Asami, G. Ishioka, M. Tachibana, K. Homma
{"title":"Differences in flowering phenology and seed production of four morning glory (\u0000 Ipomoea\u0000 ) species in Japan","authors":"Hidenori Asami, G. Ishioka, M. Tachibana, K. Homma","doi":"10.1111/wbm.12264","DOIUrl":"https://doi.org/10.1111/wbm.12264","url":null,"abstract":"","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41561368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Herbicide‐resistant barnyardgrass (\u0000 \u0000 Echinochloa crus‐galli\u0000 \u0000 ) in global rice production","authors":"C. Damalas, S. Koutroubas","doi":"10.1111/wbm.12262","DOIUrl":"https://doi.org/10.1111/wbm.12262","url":null,"abstract":"","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46146927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Weed seed bank as affected by tillage, residue, and fertilization management under sweet corn‐wheat cropping sequence in Iran","authors":"K. Alijani, S. Kazemeini, M. Bahrani, H. Ghadiri","doi":"10.1111/wbm.12263","DOIUrl":"https://doi.org/10.1111/wbm.12263","url":null,"abstract":"","PeriodicalId":23536,"journal":{"name":"Weed Biology and Management","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43593765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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