Vol. 3 (3) : May-June 2012 issue
Green Farming Vol. 3 (3) : 302-306 (May-June, 2012)
Effect of abiotic factors on the growth and development of Lasiodiplodia theobromae causing stem canker in mulberry
G.B. GEETHA KUMARIa1*, GOVINDAIAHa2 and J. SUKUMARb3
aDepartment of Sericulture/Lifescience, Bangalore University, Bangalore - 560 056 (K.K.)
bKarnataka State Sericulture Research and Development Institute, Thalaghattpura, Bangalore 560 062 (K.K.)
Designation : 1Ph.D. Scholar *(geethaprasannakumar@gmail.com), 2Professor, 3Scientist 'D' & Head
Subject : Sericulture
Paper No. : P-0100
Total Pages : 5
Received : 06 January 2012
Revised accepted : 15 May 2012
First Page
Citation :
G.B. GEETHA KUMARI, GOVINDAIAH and J. SUKUMAR. 2012. Effect of abiotic factors on the growth and development of Lasiodiplodia theobromae causing stem canker in mulberry. Green Farming Vol. 3 (3) : 302-306 ; May-June, 2012
ABSTRACT
In vitro studies were carried out to test the effect of abiotic factors such as media, nitrogen sources, carbon sources, light, pH and temperature on the growth and sporulation of Lasiodiplodia theobromae causing stem canker in mulberry nurseries. Potato dextrose agar and potato jaggery agar were found to be the most suitable media for the vegetative growth and sporulation of the fungus. The fungus utilized Potassium nitrate for maximum growth and sporulation. Among the carbon sources D-glucose, sucrose and lactose were found to be favorable for maximum growth and sporulation. Light had no influence on the growth and sporulation. Acidic pH favored the growth and sporulation and the fungus L. theobromae, which recorded maximum growth at temperatures 28 and 300 C.
Key words :
Abiotic factors, Lasiodiplodia theobromae, mulberry, media, nitrogen and carbon sources, sporulation, stem canker.
