摘要
旨在评估农作物红薯与香茅草对入侵植物空心莲子草茎节克隆繁殖及生长的影响,以期为生态管理提供科学依据。实验采用红薯和香茅草的地上部分粉碎物,对空心莲子草茎节实施了3种不同处理:表层覆盖、混土栽培和水提液浇灌。通过测定茎节的存活率、生物量及酶活性等指标,评估不同处理对空心莲子草影响的效果。实验结果表明,在100 g/kg的处理浓度下,经过红薯混土栽培和香茅草水提液浇灌处理后,空心莲子草茎节的存活率分别降至55.56%和43.75%。相比之下,高浓度(100 g/kg)的水提液浇灌处理显著抑制了空心莲子草的茎长(红薯:3.37 cm,香茅草:2.25 cm)、根长(红薯:3.34 cm,香茅草:2.62 cm)、叶面积(红薯:0.46 cm^(2),香茅草:0.37 cm^(2))及生物量(红薯:0.19 g,香茅草:0.13 g)。此外,随着处理浓度的增加,超氧化物歧化酶(SOD)和过氧化氢酶(CAT)的活性以及丙二醛(MDA)含量上升,而过氧化物酶(POD)活性降低,这些变化反映了植物应对氧化应激的生理反应。综上所述,本研究发现100 g/kg的高浓度红薯与香茅草处理能显著抑制空心莲子草的茎节克隆繁殖与幼苗生长,尤其是通过水提液浇灌的方式效果更为显著。这一发现对于开发新的植物生长调控策略具有重要的实践意义。
This investigation seeks to explore the effects of diverse intervention strategies employing Ipomoea batatas and Cymbopogon citratus on the Alternanthera philoxeroides growth,aiming to furnish a robust scientific foundation for its ecological management.Ground sweet potato and lemongrass parts were applied via mulching,soil mixing,and extracts to A.philoxeroides,and the effects of different treatments were evaluated by measuring its survival rate,biomass,and enzyme activity.Under 100 g/kg treatment,survival rates decreased to 55.56%(sweet potato,soil mixing)and 43.75%(lemongrass extract).High-concentration extract irrigation significantly reduced stem length(Ipomoea batatas:3.37 cm,Cymbopogon citratus:2.25 cm),root length(Ipomoea batatas:3.34 cm,Cymbopogon citratus:2.62 cm),leaf area(Ipomoea batatas:0.46 cm^(2),Cymbopogon citratus:0.37 cm^(2)),and biomass(Ipomoea batatas:0.19 g,Cymbopogon citratus:0.13 g).Additionally,the increase of concentration led to the elevation of superoxide dismutase(SOD)and catalase(CAT)activities,as well as the content of malondialdehyde(MDA),while the activity of peroxidase(POD)decreased,reflecting the changes in plant response to oxidative stress.This study unequivocally illustrates that treatments with a 100 g/kg concentration of Ipomoea batatas and Cymbopogon citratus substantially curtail the clonal expansion and seedling development of A.philoxeroides,particularly when applied through aqueous extract irrigation.These findings are of great significance for the development of new plant growth regulation strategies.
作者
吴冉迪
葛丽清
张付斗
申时才
杨云海
杨韶松
郑凤萍
范泽文
高家乐
徐高峰
WU Randi;GE Liqing;ZHANG Fudou;SHEN Shicai;YANG Yunhai;YANG Shaosong;ZHENG Fengping;FAN Zewen;GAO Jiale;XU Gaofeng(College of Agricultural and Life Sciences,Kunming University,Kunming 650214;Institute of Agricultural Environment and Resources Research,Yunnan Academy of Agricultural Sciences,Kunming 650205;Luoping County Ginger Technology Extension Station,Luoping,Kunming 655800;Schoool of Agriculture,Yunnan University,Kunming 650504)
出处
《中国农学通报》
2024年第14期104-111,共8页
Chinese Agricultural Science Bulletin
基金
云南省人才与平台计划“技术创新人才”项目(202105AD160021)
国家重点研发计划“生物安全关键技术研究”项目(2021YFC2600400)
云南省重点研发计划-国际合作重大专项“共建澜湄农业生物安全联合研究中心”(202103AF14007)
云南省重大专项“云南农业跨境病虫草害绿色防控技术集成与应用”项目(202102AE090003)
国家自然科学基金项目“稻田土壤微生物对长雄野生稻化感抑草作用的影响及机制”(31960544)。
关键词
空心莲子草
红薯
香茅草
克隆繁殖
Alternanthera philoxeroides
ipomoea batatas
cymbopogon citratus
clonal proliferation
