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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2016 - IJCMAS--ICV 2016: 92.3 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2016: 92.3
Index Copernicus ICI Journals Master List 2016 - IJCMAS--ICV 2016: 92.3
For more details click here
journals IJCMAS
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Original Research Articles

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 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(3): 1525-1533
DOI: https://doi.org/10.20546/ijcmas.2017.603.175


Screening of Tomato Genotypes for Root Knot Nematode  (Meloidogyne incognita Kofoid and White Chitwood)
R. Sujatha1*, P. Irene Vethamoni1, N. Manivannan2 and M. Sivakumar3
1Department of Vegetable Crops, HC & RI, TNAU, Coimbatore – 641003, India
2Department of Oil Seeds, Centre for Plant Breeding and Genetics,TNAU, Coimbatore-641 003, India
3Department of Nematology, Tamil Nadu Agricultural University, Coimbatore-641 003, India
*Corresponding author
Abstract:

A study was conducted to evaluate the reaction of tomato genotypes to root knot nematode (Meloidogyne incognita race - 3) and the nematode reproduction were studied in the nematode infested pot culture experiment. Forty tomato genotypes were subjected for screening. At 65 days after nematode inoculation, whole plants were uprooted, washed and ranked for root galling and egg mass indices on a 1 to 5 scales. The plant growth responses viz., root length, root dry weight and nematode reproduction in term of number of galls per gram of root system, gall index, egg masses, eggs per egg mass, and second stage juveniles per 200-cm3 of soil were recorded. The field experiment revealed that M. incognita was able to induce root galling and reproduced on all the forty tomato genotypes screened. All the tomato genotypes show varying degree of response. Out of forty genotypes of tomato used in this experiment Hisar Lalit, HN 2, PNR 7, IIHR 2614 and IIHR 2868 were found to be resistant to root knot nematode and these cultivars can be used as a source of resistance. However, the tomato varieties usually cultivated in Tamil Nadu are highly susceptible to root-knot nematode and thus provide substrate for buildup of population of root knot nematode in tomato field. These varieties should be replaced in order to reduce the population of root knot nematode. The use of resistant varieties to manage the population of nematode is very cost effective method to control the plant parasitic nematodes.


Keywords: Tomato, Nematode, Meloidogyne incognita, Resistance.
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How to cite this article:

Sujatha, R., P. Irene Vethamoni, N. Manivannan and Sivakumar, M. 2017. Screening of Tomato Genotypes for Root Knot Nematode (Meloidogyne incognita Kofoid and White. Chitwood).Int.J.Curr.Microbiol.App.Sci. 6(3): 1525-1533. doi: https://doi.org/10.20546/ijcmas.2017.603.175