STUDIES ON SEED BORNE MYCOFLORA OF SOYBEAN WITH SPECIAL REFERENCE TO POD BLIGHT DISEASE

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Date
2018
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mpkv, rahuri
Abstract
Soybean (Glycine max L.) is an important oilseed and protein crop. There are several factors responsible for low yield of soybean. Among those, seed borne diseases are important one. The seed borne diseases cause losses in terms of seed quality and quantity of soybean. The mycoflora associated with seeds of soybean are responsible for causing number of diseases, which overall affect total production as well as productivity. In view of this the present investigation entitled on the “Studies on seed borne mycoflora of soybean with special reference to pod blight disease” was carried out to see the seed borne fungal pathogens associated with seeds of soybean, effect of seed borne fungal pathogens on seed germination and seedling vigour, in vitro and in vivo effects of fungicides, bioagents and botanicals on seed borne fungi, seed germination and seedling vigour. The external seed borne pathogens of soybean were detected by standard blotter test. Seven seed borne fungi were found associated with seeds of soybean externally. These fungi were Colletotrichum truncatum, Fusarium oxysporum, Fusarium moniliforme, Macrophomina phaseolina, Alternaria alternata, Aspergillus flavus and Aspergillus niger. The internal seed borne fungi were detected by agar plate method. Five internal seed borne fungi viz., Colletotrichum truncatum, Fusarium oxysporum, Fusarium moniliforme, Macrophomina phaseolina and Alternaria alternata were found associated with seeds of soybean. Different isolated pathogen were evaluated to find out the cause of pod blight disease of soybean by growing in pots under greenhouse conditions, the studies revealed that Colletotrichum truncatum was the cause of pod blight disease of soybean.
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M.sc
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