Journal of Pure and Applied MicrobiologyVol. 2 No. 1

Effect of Temperature on Incidence of Storage Fungi of Some Oil Seeds

A.M. Deshmukh1 and D.U. Gawai

1Department of Botany, Sevadas College, Vasant Nagar, India P.G. Department of Botany- N.E.S. Sciences College, Nanded - 431 605, India

Received on 25 Novemeber 2007 and accepted on 16 January 2008

 

ABSTRACT

The seed mycoflora associated naturally with oil seeds causes seed deterioration making them unfit for consumption and oil extract. The seed borne fungi inhibits seed germination, seedling emergence and causing diseases to crop plants. The major factor affecting the spoilage of stored oil seeds by moulds, moisture content and temperature. The seed mycoflora of oil seeds like soybean (JS-335, Prasad and Puja), Safflower (Tara, Bhima and Sharda) and Niger (Local, N-8 and Ootcamand) was detected by standard blotter method and agar method. The most dominant fungi detected on three varieties of soybean were Rhizopus stolonifer, Curvularia lunata, Aspergillus niger, Alternaria alternata, from Safflower Alternaria tenuis, Aspergillus niger, Rhizopus stolonifer and from Niger Alternaria tenuis, Aspergillus niger, Rhizopus nigricans. It was found that temperature invariably affect the quality of the seeds in the storage. The percentage incidence of fungi found varies at different temperatures. The temperature 30C was found to be more favorable for the incidence of fungi on oil seeds. A very less percentage incidence of fungi was found at 10C and 40C temperature tested for all the varieties of Soybean, Safflower and Niger.

Keywords : Soybean, safflower, Niger, Temperature, seed mycoflora.