Investigations in to mulberry root rot disease, identification of QTLs conferring resistance and trait introgression

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1.

Project Code

:

Pilot study

2.

Title

:

Investigations in to mulberry root rot disease, identification of QTLs conferring resistance and trait introgression. 

3.

Investigators

:

Dayakar Yadav BR, Sharma DD, Pratheesh Kumar PM, Girish Naik V.

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Project period

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Jan., 2010 to Dec., 2010

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Institute/ University

:

CSR&TI, Mysore

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Project cost

:

0.50 Lakh

7.

Objectives

  • To identify the specific pathogens causing root rot disease in mulberry for identification of DNA marker associated with resistance.

8.

Important findings

The fungus, Rhizoctonia bataticola (= Macrophomina phaseolina) was identified as actual causal agent of root rot and F. solani, F. oxysporum and B. theobromae were found to cause secondary infection after Rhizoctonia. Abiotic factors, soil temperature >25ºC, poor organic carbon (< 0.3 %), soil moisture < 30 % and sandy soil enhances the disease severity. A new formulation “Navinya” has been developed, which composed of plant derivatives (80 %), organic (6%) and inorganic (14 %) chemical compounds. The formulation was applied in hot spot areas at Kanakapura and Malavalli and achieved >90% disease suppression.

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