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Current IssueEditorial BoardOnline First ArticlesArchive

volume 21 issue 2 (june 2001) : 75 - 78

EFFECT OF TEMPERATURE AND pH ON SPORE GERMINATION AND GERM TUBE GROWTH OF CORYNESPORA CASS//COLA (BERK. AND CURT.) WEI. CAUSING LEAF SPOT DISEASE ON BLACKGRAM

G
G. Bindu Madhavi·
K
K.V.M. Krishna Murthy··
1Department of Plant Pathology, Agricultural College, Bapatla Acharya NG Ranga Agricultural University, Hyderabad - 500 030, India

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  • First Online |

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Cite article:- Madhavi· Bindu G., Murthy·· Krishna K.V.M. (2025). EFFECT OF TEMPERATURE AND pH ON SPORE GERMINATION AND GERM TUBE GROWTH OF CORYNESPORA CASS//COLA (BERK. AND CURT.) WEI. CAUSING LEAF SPOT DISEASE ON BLACKGRAM. Agricultural Science Digest. 21(2): 75 - 78. doi: .

ABSTRACT

To study the effect of temperature and pH on spore germination and germ tube growth of Corynespora cassiicola, a leaf spot causing fungus, the experiment was conducted in BOD incubators at 95% relative humidity. The spore germination and germ tube growth of the fungus occurred over a temperature range of 10–35°C with maximum germination of 94.66% and germ tube growth of 107.83 μm at 25°C. Spores failed to germinate at 40°C. The germination and germ tube growth were found at all pH values ranging from 3–9 with maximum percentage of germination (95.66%) and germ tube growth (98.61 μm) at pH 6. Minimum percentage of germination and germ tube growth was observed at pH 3.

KEYWORDS

    REFERENCES

    1. Dhingra, 0.0. and Sinclair, J.B. (1993). Basic Plant Pathology Methods., CRC Florida USA. pp 257.
    2. Iwano, M.S. and Horino, O. M. (1985). Proc. Assoc. Plant Protection Hokuriku 33:1-6.
    3. Misra, A.P. and Singh. S.P. (1963). Indian Phytopath. 16: 158-163.
    4. Mohanty, NN and Mahapatra, PK (1968). Phytopath. 21:275-279.
    5. Rao, P.B. and Mallaiab. K,V. (1985). Indian Phytopath.38:559-560.
    6. Sussman. A.S. (1965). In: Handbuch der pfianzenpHsiologie 15:933-1025.
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      volume 21 issue 2 (june 2001) : 75 - 78

      EFFECT OF TEMPERATURE AND pH ON SPORE GERMINATION AND GERM TUBE GROWTH OF CORYNESPORA CASS//COLA (BERK. AND CURT.) WEI. CAUSING LEAF SPOT DISEASE ON BLACKGRAM

      G
      G. Bindu Madhavi·
      K
      K.V.M. Krishna Murthy··
      1Department of Plant Pathology, Agricultural College, Bapatla Acharya NG Ranga Agricultural University, Hyderabad - 500 030, India

      • Submitted|

      • First Online |

      • doi

      Cite article:- Madhavi· Bindu G., Murthy·· Krishna K.V.M. (2025). EFFECT OF TEMPERATURE AND pH ON SPORE GERMINATION AND GERM TUBE GROWTH OF CORYNESPORA CASS//COLA (BERK. AND CURT.) WEI. CAUSING LEAF SPOT DISEASE ON BLACKGRAM. Agricultural Science Digest. 21(2): 75 - 78. doi: .

      ABSTRACT

      To study the effect of temperature and pH on spore germination and germ tube growth of Corynespora cassiicola, a leaf spot causing fungus, the experiment was conducted in BOD incubators at 95% relative humidity. The spore germination and germ tube growth of the fungus occurred over a temperature range of 10–35°C with maximum germination of 94.66% and germ tube growth of 107.83 μm at 25°C. Spores failed to germinate at 40°C. The germination and germ tube growth were found at all pH values ranging from 3–9 with maximum percentage of germination (95.66%) and germ tube growth (98.61 μm) at pH 6. Minimum percentage of germination and germ tube growth was observed at pH 3.

      KEYWORDS

        REFERENCES

        1. Dhingra, 0.0. and Sinclair, J.B. (1993). Basic Plant Pathology Methods., CRC Florida USA. pp 257.
        2. Iwano, M.S. and Horino, O. M. (1985). Proc. Assoc. Plant Protection Hokuriku 33:1-6.
        3. Misra, A.P. and Singh. S.P. (1963). Indian Phytopath. 16: 158-163.
        4. Mohanty, NN and Mahapatra, PK (1968). Phytopath. 21:275-279.
        5. Rao, P.B. and Mallaiab. K,V. (1985). Indian Phytopath.38:559-560.
        6. Sussman. A.S. (1965). In: Handbuch der pfianzenpHsiologie 15:933-1025.
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