高温对美国南部黄狐尾苋和帕尔默苋生长参数和结籽的影响

Agronomy Pub Date : 2024-09-05 DOI:10.3390/agronomy14092025
Amarnadh Oleti, Amna Dar, Sanju Shrestha, Grishma Ojha, Te-Ming Tseng, Swati Shrestha
{"title":"高温对美国南部黄狐尾苋和帕尔默苋生长参数和结籽的影响","authors":"Amarnadh Oleti, Amna Dar, Sanju Shrestha, Grishma Ojha, Te-Ming Tseng, Swati Shrestha","doi":"10.3390/agronomy14092025","DOIUrl":null,"url":null,"abstract":"The steady increase in temperature due to global warming can significantly impact weed growth. This study investigates the response of the yellow foxtail (Setaria pumila (Poir.) Roem. & Schult.) grass weed and the Palmer amaranth (Amaranthus palmeri S. Watson) broadleaf weed to increasing temperature conditions, simulating future climate conditions. Temperature treatments included growing these weeds in three temperature-controlled growth chambers: control or ambient conditions (15.5/12.8 °C day/night), moderately elevated temperatures (17.2/14.4 °C), and elevated temperatures (18.8/16.1 °C). Monthly adjustments in the growth chambers simulated the natural temperature rise observed from April to June in the Southern USA, aligning with the respective treatments. Different plant parameters recorded included days to emergence, number of tillers/leaves, chlorophyll content, days to first inflorescence, biomass, and seed set. One-way ANOVA indicated a significant temperature impact on all the parameters assessed (p < 0.05), except for biomass (for both weeds) and days to first inflorescence and yield (for Palmer amaranth (p > 0.05)). The average days to emergence were the lowest under elevated temperatures (8 days for yellow foxtail and 11 days for Palmer amaranth) when compared to that for the control (10 days for yellow foxtail and 19 days for Palmer amaranth). By week 5, yellow foxtail exhibited notably greater tiller numbers under elevated temperatures compared to that of the control; a similar trend was noticed regarding the number of Palmer amaranth leaves. The average chlorophyll content was the highest under elevated temperature conditions up to week 6 and began decreasing after that for both weeds. The average yield of yellow foxtail under elevated, moderately elevated, and control temperatures was 7.55, 2.69, and 0.88 g, respectively. Even though not significant, the yield of Palmer amaranth was higher under elevated temperature conditions as compared to that under the ambient condition. The biomass of both yellow foxtail and Palmer amaranth were not significantly impacted by temperature (p > 0.05). Our research shows that as temperatures rise, weeds exhibit more vigorous growth and show higher photosynthetic efficiency, which has important implications for how we manage weeds in agriculture. These findings suggest that under warmer conditions, weeds could display more vigorous vegetative growth, thus significantly impacting crop yields. As we face ongoing global warming, it is crucial to consider how temperatures influences weed growth when designing strategies to manage weeds effectively.","PeriodicalId":7601,"journal":{"name":"Agronomy","volume":"19 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Elevated Temperature on Growth Parameters and Seed Set of Setaria pumila (Yellow Foxtail) and Amaranthus palmeri (Palmer amaranth) in Southern USA\",\"authors\":\"Amarnadh Oleti, Amna Dar, Sanju Shrestha, Grishma Ojha, Te-Ming Tseng, Swati Shrestha\",\"doi\":\"10.3390/agronomy14092025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The steady increase in temperature due to global warming can significantly impact weed growth. This study investigates the response of the yellow foxtail (Setaria pumila (Poir.) Roem. & Schult.) grass weed and the Palmer amaranth (Amaranthus palmeri S. Watson) broadleaf weed to increasing temperature conditions, simulating future climate conditions. Temperature treatments included growing these weeds in three temperature-controlled growth chambers: control or ambient conditions (15.5/12.8 °C day/night), moderately elevated temperatures (17.2/14.4 °C), and elevated temperatures (18.8/16.1 °C). Monthly adjustments in the growth chambers simulated the natural temperature rise observed from April to June in the Southern USA, aligning with the respective treatments. Different plant parameters recorded included days to emergence, number of tillers/leaves, chlorophyll content, days to first inflorescence, biomass, and seed set. One-way ANOVA indicated a significant temperature impact on all the parameters assessed (p < 0.05), except for biomass (for both weeds) and days to first inflorescence and yield (for Palmer amaranth (p > 0.05)). The average days to emergence were the lowest under elevated temperatures (8 days for yellow foxtail and 11 days for Palmer amaranth) when compared to that for the control (10 days for yellow foxtail and 19 days for Palmer amaranth). By week 5, yellow foxtail exhibited notably greater tiller numbers under elevated temperatures compared to that of the control; a similar trend was noticed regarding the number of Palmer amaranth leaves. The average chlorophyll content was the highest under elevated temperature conditions up to week 6 and began decreasing after that for both weeds. The average yield of yellow foxtail under elevated, moderately elevated, and control temperatures was 7.55, 2.69, and 0.88 g, respectively. Even though not significant, the yield of Palmer amaranth was higher under elevated temperature conditions as compared to that under the ambient condition. The biomass of both yellow foxtail and Palmer amaranth were not significantly impacted by temperature (p > 0.05). Our research shows that as temperatures rise, weeds exhibit more vigorous growth and show higher photosynthetic efficiency, which has important implications for how we manage weeds in agriculture. These findings suggest that under warmer conditions, weeds could display more vigorous vegetative growth, thus significantly impacting crop yields. As we face ongoing global warming, it is crucial to consider how temperatures influences weed growth when designing strategies to manage weeds effectively.\",\"PeriodicalId\":7601,\"journal\":{\"name\":\"Agronomy\",\"volume\":\"19 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Agronomy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3390/agronomy14092025\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agronomy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3390/agronomy14092025","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

全球变暖导致的气温持续上升会对杂草的生长产生重大影响。本研究调查了黄狐尾(Setaria pumila (Poir.) Roem. & Schult.)禾本科杂草和帕尔默苋(Amaranthus palmeri S. Watson)阔叶杂草对温度升高条件的反应,模拟了未来的气候条件。温度处理包括在三个温度可控的生长室中种植这些杂草:对照或环境条件(白天/晚上 15.5/12.8 °C)、中度升温(17.2/14.4 °C)和高温(18.8/16.1 °C)。生长室的月度调整模拟了美国南部 4 月至 6 月的自然升温,与相应的处理保持一致。记录的不同植物参数包括出苗天数、分蘖/叶片数、叶绿素含量、第一花序形成天数、生物量和结实率。单因子方差分析表明,温度对所有评估参数都有显著影响(p < 0.05),但生物量(两种杂草)和第一花序形成天数及产量(帕尔默苋(p > 0.05))除外。与对照组(黄狐尾 10 天,帕尔默苋 19 天)相比,温度升高时的平均出苗天数最少(黄狐尾 8 天,帕尔默苋 11 天)。到第 5 周时,与对照组相比,黄狐尾在高温下的分蘖数量明显增加;帕尔默苋的叶片数量也呈现类似趋势。在温度升高的条件下,两种杂草的平均叶绿素含量在第 6 周之前最高,之后开始下降。在高温、中温和对照温度下,黄狐尾的平均产量分别为 7.55 克、2.69 克和 0.88 克。尽管不显著,但在高温条件下,帕尔默苋的产量比常温条件下高。温度对黄狐尾苋和帕尔默苋的生物量影响不大(p > 0.05)。我们的研究表明,随着温度升高,杂草的生长更加旺盛,光合效率更高,这对我们如何管理农业杂草具有重要意义。这些发现表明,在气温升高的条件下,杂草会表现出更旺盛的无性生长,从而对作物产量产生重大影响。由于我们面临着持续的全球变暖,因此在设计有效管理杂草的策略时,考虑温度如何影响杂草的生长至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Elevated Temperature on Growth Parameters and Seed Set of Setaria pumila (Yellow Foxtail) and Amaranthus palmeri (Palmer amaranth) in Southern USA
The steady increase in temperature due to global warming can significantly impact weed growth. This study investigates the response of the yellow foxtail (Setaria pumila (Poir.) Roem. & Schult.) grass weed and the Palmer amaranth (Amaranthus palmeri S. Watson) broadleaf weed to increasing temperature conditions, simulating future climate conditions. Temperature treatments included growing these weeds in three temperature-controlled growth chambers: control or ambient conditions (15.5/12.8 °C day/night), moderately elevated temperatures (17.2/14.4 °C), and elevated temperatures (18.8/16.1 °C). Monthly adjustments in the growth chambers simulated the natural temperature rise observed from April to June in the Southern USA, aligning with the respective treatments. Different plant parameters recorded included days to emergence, number of tillers/leaves, chlorophyll content, days to first inflorescence, biomass, and seed set. One-way ANOVA indicated a significant temperature impact on all the parameters assessed (p < 0.05), except for biomass (for both weeds) and days to first inflorescence and yield (for Palmer amaranth (p > 0.05)). The average days to emergence were the lowest under elevated temperatures (8 days for yellow foxtail and 11 days for Palmer amaranth) when compared to that for the control (10 days for yellow foxtail and 19 days for Palmer amaranth). By week 5, yellow foxtail exhibited notably greater tiller numbers under elevated temperatures compared to that of the control; a similar trend was noticed regarding the number of Palmer amaranth leaves. The average chlorophyll content was the highest under elevated temperature conditions up to week 6 and began decreasing after that for both weeds. The average yield of yellow foxtail under elevated, moderately elevated, and control temperatures was 7.55, 2.69, and 0.88 g, respectively. Even though not significant, the yield of Palmer amaranth was higher under elevated temperature conditions as compared to that under the ambient condition. The biomass of both yellow foxtail and Palmer amaranth were not significantly impacted by temperature (p > 0.05). Our research shows that as temperatures rise, weeds exhibit more vigorous growth and show higher photosynthetic efficiency, which has important implications for how we manage weeds in agriculture. These findings suggest that under warmer conditions, weeds could display more vigorous vegetative growth, thus significantly impacting crop yields. As we face ongoing global warming, it is crucial to consider how temperatures influences weed growth when designing strategies to manage weeds effectively.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信