Arbuscular mycorrhizal and dark septate fungal associations in shallot (Allium cepa L. var. aggregatum) under conventional agriculture

作者：Priyadharsini Perumalsamy; Pandey Radha Raman; Muthukumar Thangavelu^*

来源：Acta Botanica Croatica, 2012, 71(1): 159-175.

DOI：10.2478/v10184-011-0058-1

• Allium
• arbuscular
• endophyte
• mycorrhiza
• Glomus
• Scutellospora

We examined roots of the shallot (Allium cepa L. var. aggregatum), one of the most popular cultivated crops of the family Aliaceae, cultivated under conventional agriculture for arbuscular mycorrhizal fungal (AMF) and dark septate fungal endophyte (DSE) associations. All the plants had dual colonization of both AMF and DSE associations. The intermediate-type AMF morphology in the shallot is the first report of this AMF type for the family Aliaceae. The extents of total AMF and DSE colonization ranged from 20.7 to 67.3% and 3.6 to 35.3% respectively and varied significantly among fields. Though no significant relationship existed between total AMF and DSE variables, they were correlated to the soil variables. Significant correlations existed between soil P and microscelerotia and also between soils N and K and AMF spore numbers. A total of six AMF spore morphotype belonging to Glomus and Scutellospora were identified. Scutellospora calospora was the most dominant morphotype in the studied fields.

• 出版日期2012-4