International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 7, Issue:10, October, 2018

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(10): 1865-1872

Infection Efficiency of Magnaporthe grisea Isolates Causing Blast in Rice and Pearl Millet
Mukesh Kumar1*, Pramod Kumar Moury2, P. Sinha1, K. Vishwanath1 and P. Sharma1
1Division of Plant Pathology, 2Discipline of Agricultural Statistics, ICAR-IASRI, New Delhi-110012, India
*Corresponding author

Incubation period as a measure of infection efficiency for isolates of leaf blast pathogen in pearl millet and rice is an important parameter to testify host specificity as well as resistance against the pathogen. Incubation period (IP50) for leaf blast symptom development on pearl millet and rice using respective isolates (pearl millet isolate on pearl millet and rice isolate on rice) were estimated to be 4.98 and 6.23 days respectively at 26±1°C. Infection efficiency estimated from the IP50 was 0.2040 and 0.1605 respectively and indicated pearl millet is the better host for the pathogen. In cross infectivity test isolates from pearl millet and rice had shown significantly higher ratio of number of appressorium to conidia on pearl millet host compared to rice host where lower ratio of number of appressorium to conidia were recorded. It appeared that blast conidia germination, germ tube growth, appressorium formation are influenced by host surface difference.

Keywords: Infection efficiency, Incubation period, M. grisea, rice, Pearl millet, leaf blast, Isolate, Appressorium

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How to cite this article:

Mukesh Kumar, Pramod Kumar Moury, P. Sinha, K. Vishwanath and Sharma, P. 2018. Infection Efficiency of Magnaporthe grisea Isolates Causing Blast in Rice and Pearl Millet.Int.J.Curr.Microbiol.App.Sci. 7(10): 1865-1872. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.