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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

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

Int.J.Curr.Microbiol.App.Sci.2017.6(10): 595-608
DOI: https://doi.org/10.20546/ijcmas.2017.610.073


Genetic Variability for Downy Mildew Disease Incidence against Virulent Downy Mildew Isolates in Mapping Population of Pearl Millet
Anishetti Saritha1, Rakesh K. Srivastava2, Chelpuri Durgaraju1, Narayan Reddy3, Rajan Sharma2, Pooja Katiyar2 and Kuldeep Singh Dangi1*
1Department of Genetics and Plant Breeding, College of Agriculture,Rajendranagar, 500 030, Telangana, India
2International Crops Research Institute for the Semi-Arid Tropics,Patancheru, 502324, Hyderabad, Telangana, India
3Department of Plant Pathology, College of Agriculture, Rajendranagar-500 030, India
*Corresponding author
Abstract:

Downy mildew caused by Sclerospora graminicola (Sacc.) Shroet. is a major biotic constraint to pearl millet production in the semi-arid tropics. The pathogen is heterothallic and frequent recombination leads to evolution of new virulent populations. Identification of resistance to new virulent isolates is a prerequisite for resistance breeding. In the present investigation, 295 RILs along with five control entries were screened against three Indian populations of Sclerospora graminicola under greenhouse conditions. Among the RILs under study, 19 RILS were found to be highly susceptible (>80 % DMI) in screening against Indigenous pathogen isolates from Gujarat (Sg445) and Haryana (Sg519), 17 RILS were found to be highly susceptible (>80 % DMI) in screening against Indigenous pathogen isolates from Gujarat (Sg445) and Rajasthan (Sg526), and there are no RILs found to be susceptible against three isolates. Among all the mapping populations, 13 RILs were resistant (<10% DMI) to three test isolates. Remaining RILs exhibited different levels of DM incidence to pathogen - isolates.


Keywords: Pearl millet, Downy mildew, Inoculation, Isolates, Pathogenicity, Screening, Resistance, Virulent.
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How to cite this article:

Anishetti Saritha, Rakesh K. Srivastava, Chelpuri Durgaraju, Narayan Reddy, Rajan Sharma, Pooja Katiyar and Kuldeep Singh Dangi. 2017. Genetic Variability for Downy Mildew Disease Incidence against Virulent Downy Mildew Isolates in Mapping Population of Pearl Millet.Int.J.Curr.Microbiol.App.Sci. 6(10): 595-608. doi: https://doi.org/10.20546/ijcmas.2017.610.073