1000-2421 2020 39 6 44 49 article 云南省綠春縣胡椒病害及叢枝菌根真菌的調查 Investigation of pepper disease and arbuscular mycorrhizal fungi in Lüchun County,Yunnan Province  采集云南省紅河州綠春縣騎馬壩鄉的胡椒種植地的胡椒根系及土壤樣品,進行胡椒瘟病的調查,計算胡椒瘟病的發病率與病情指數,并利用濕篩沉淀法 、植株根部染色等方法對所選樣地的胡椒根際及根部周圍的叢枝菌根真菌的孢子密度、豐富度、多樣性指數及菌根侵染率進行調查和計算。結果顯示,當菌根侵染率最高(62.5%)時,孢子密度也最高,達到11.725個/g,胡椒瘟病的發病率和病情指數最低,分別為20%和9;當菌根侵染率和孢子密度最低為11%和2.475個/g時,胡椒瘟病的發病率和病情指數最高,分別為80%和53.5;相關性分析結果表明叢枝菌根真菌的孢子密度、豐富度和菌根侵染率與胡椒瘟病發病率和病情指數呈顯著負相關關系(P<0.05),即叢枝菌根真菌孢子的豐富度及孢子密度越大,菌根侵染率越高,胡椒瘟病的發病率就越低,病情指數也就越小。由此可看出,胡椒根系土壤中叢枝菌根真菌的存在能增強胡椒的抗病性,減少病害的發生。 The pepper root system and soil samples were collected from the pepper planting area in Qimaba Township,Lüchun County,Honghe Prefecture,Yunnan Province.To investigate pepper phytophthora root rot and calculate its incidence and disease index,the spore density,richness,diversity index and mycorrhizal infection rate of arbuscular mycorrhizal fungi(AMF) in the rhizosphere and around roots of pepper were investigated by wet-screen precipitation method and plant root staining. Then the final data were analyzed by using SPSS software. The results showed that when the mycorrhizal infection rate was the highest(62.5%),the spore density was also the highest,reaching 11.725 spores/g,the incidence and disease index of pepper phytophthora root rot were the lowest(20% and 9,respectively). When the mycorrhizal infection rate and spore density were the lowest(11% and 2.475 spores/g),the incidence and disease index of pepper phytophthora root rot were the highest at 80% and 53.5,respectively. The results of the correlation analysis showed that the spore density,richness and mycorrhizal infection rate of the AMF were negatively correlated with the incidence and the disease index of pepper phytophthora root rot. That is,the higher the abundance and density of AMF spore,the higher the mycorrhiza infection rate,the lower the incidence of pepper phytophthora root rot and the smaller the disease index. It can be seen that the existence of AMF in pepper root soil can enhance the disease resistance of pepper and reduce the occurrence of diseases. 叢枝菌根真菌(AMF); 胡椒瘟??; 真菌多樣性; 胡椒; 生物防治 arbuscular mycorrhizal fungi(AMF); pepper phytophthora root rot; diversity of AMF; Piper nigrum L.; biological control 尼瑪此姆,韓雨庭,唐婕,黃若霞,馬煥成,伍建榕 /hznydxzr/article/abstract/20200607
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