Invasive Species Compendium

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Abstract

Influence of farmers' seed processing activities on seed borne fungi of T.Aman rice.

Abstract

The influence of different seed processing activities on seed borne fungi of rice was studied using blotter method. Seed samples were collected from 21 selected farms in Mymensingh, Bangladesh after different activities starting from harvest to soaking before subsequent sowing. Altogether, 19 fungal species representing 15 genera and one unidentified fungus (only mycelium) were associated from the seed samples. The population of storage fungi, Aspergillus spp. and Penicillium spp., remained unchanged from harvest to drying but increased significantly in storage. On the other hand, the population of Bipolaris oryzae [Cochliobolus miyabeanus], Curvularia lunata [Cochliobolus lunatus], Fusarium moniliforme [Gibberella fujikuroi], F. solani, F. semitectum [F. pallidoroseum], Cladosporium cladosporioides and Nigrospora oryzae [Khuskia oryzae] was significantly decreased during storage. The incidence of Tilletia barclayana significantly increased after soaking but was similar from harvest to storage. There was no change in the population of Microdochium oryzae [Monographella albescens] and Sarocladium oryzae.