河南农业科学2024，Vol.53Issue(8)：79-91,13.DOI:10.15933/j.cnki.1004-3268.2024.08.009
不同磷水平下外接AMF对三叶鬼针草和金盏银盘形态指标及光合生理的影响
Effects of AMF on Morphological Index and Photosynthetic Physiology of Bidens pilosa and B.biternata under Different Phosphorus Levels
摘要
Abstract
A pot experiment was conducted to investigate the effects of arbuscular mycorrhizal fungi control(CK).The results showed that AMF could infect both plants mentioned above,and the infection rate and spore density of AMF on B.pilosa were significantly higher than those on B.biternata.Ata phosphorus level of 50 mg/kg,B.pilosa had the highest infection rate and spore density.Inoculation of AMF at 0 and 50 mg/kg phosphorus concentration could significantly promote the absorption of phosphorus by both plants,while the absorption of nitrogen decreased.It also had a certain promoting effect on the plant height,leaf area,total biomass,number of branches,and root crown ratio of both plants.At a phosphorus level of 50 mg/kg,compared with CK,the total chlorophyll content,chlorophyll a/b,maximum fluorescence,maximum photochemical quantum yield of PS Ⅱ,and photosynthetic performance index of B.pilosa and B.biternata inoculated with AMF increased by 22.1%—22.9%,8.4%—11.5%,15.5%—23.8%,11.4%—14.4%,and 17.9%—25.9%,respectively.The net photosynthetic rate,stomatal conductance,and transpiration rate increased by 8.1%—17.7%,18.4%—18.7%,and 12.6%—14.9%,respectively,while the intercellular CO2 concentration decreased by 9.4%—14.7%.The activities of superoxide dismutase,catalase,and peroxidase treated with AMF were significantly higher than those of CK,with increases of 17.2%—19.3%,37.4%—46.4%,and 24.1%—32.1%,respectively.The contents of soluble sugar and soluble protein in osmotic regulators were increased by 45.6%—59.8%and 33.3%—45.1%,respectively.In summary,AMF can promote the growth of B.pilosa and B.biternata under low phosphorus levels(0,50 mg/kg),and the mycorrhizal effect of B.pilosa is higher than that of B.biternata,while the high phosphorus level(200 mg/kg)has a certain inhibitory effect on the growth of the two plants,which is likely to have a certain effect on the successful invasion of B.pilosa in a low phosphorus environment.关键词
三叶鬼针草/金盏银盘/磷/丛枝菌根真菌/形态指标/光合生理Key words
Bidens pilosa/B.biternata/Phosphorus/Arbuscular mycorrhizal fungi/Morphological index/Photosynthetic physiology分类
农业科技引用本文复制引用
曾鲸津,刘伟,刘江,赵樱,马啸..不同磷水平下外接AMF对三叶鬼针草和金盏银盘形态指标及光合生理的影响[J].河南农业科学,2024,53(8):79-91,13.基金项目
四川省科技扶贫专项(2019ZHFP0151) （2019ZHFP0151）
