【摘要】 通过采集昆明黑龙潭公园不同梅花品种的根围土壤样品,研究其共生的丛枝菌根(AM)真菌多样性。结果表明:梅根围土壤丛枝菌根真菌(AMF)平均孢子密度为(183.4±116.5)个100 g,其中‘美人’梅的根围土壤孢子密度最大;AMF种丰度平均为6.7±2.1,其中‘蒿明小’梅的根围土壤AMF有11种,最多;从20个梅花品种的土样中分离得到AMF 3属24种,其中Glomus属为优势属,Glomus trimurales、G.geosporum为优势种。结果证明,梅根围土壤AMF种类或孢子密度与梅花生长状况密切相关:根围AMF种类多、孢子密度大的植株生长较好;而根围AMF种类少、孢子密度小的植株生长较差。更多还原

【Abstract】 A total of 20 rhizosphere soil samples from 20 Mei( Prunus mume Sieb. et Zucc.) cultivars were collected from Heilongtan( Black Dragon Pool) Park of Kunming,Yunnan to determine the diversity of arbuscular mycorrhizal fungus( AMF) community associated with Mei flowers. The results showed that the average spore density of AMF was 183. 4 ± 116. 5 per 100 g dry soil,and the spore density of AMF associated with the cultivar ‘Meiren’was the largest. The average species richness of AMF was 6. 7 ±2. 1,and the largest species richness was 11 which was associated with the cultivar ‘Songming Xiao’.There were 24 species belonging to 3 genera of AMF,with Glomus as dominant genus,Glomus trimurales and G. geosporum as dominant species. The results indicate that the arbuscular mycorrhizal fungal diversity is closely related to the growth condition of P. mume. Rich rhizosphere AMF species will lead to better growth of Mei with higher spore density; on the other hand,less AMF species and spore density result in poor plant growth.更多还原