Effect of SO2 and NH3 on growth behavior of some phylloplane fungi of wheat in in vitro |
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| Authors: | A K Singh Bharat Rai |
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| Institution: | 1. Department of Botany, Banaras Hindu University, 221005, Varanasi, India
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| Abstract: | The colony growth of some phylloplane fungi of wheat viz. Alternaria alternata, Aspergillus favus, Amiger, Cladosportium cladosporioides, Curvularia lunata, Drechslera australiensis, Epicoccum purpurascens, Fusarium oxysporum, Penicillium chrysogenum and P. citrinum were studied in chamber fumigation experiments exposed to 2669 ± 105 μg SO2 m?3 and 708.33 ± 55 μg NH3 m?3 air, separately, for 10, 30 and 60 min. The colony growth of all the test fungi was significantly (P=0.01/0.005) inhibited on prolonged period of SO2/NH3 exposure. However, some of the test fungi namely A. favus, A. niger, E. purpurascens and F. oxysporum showed growth stimulation after 10 min exposure of SO2. Similarly, the growth of C. lunata and F. oxysporum increased only after 10 min exposure of NH3. The inhibitory effect of SO2/NH3 was directly correlated with the exposure times. |
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