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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.
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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 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(5): 1487-1497
DOI: https://doi.org/10.20546/ijcmas.2019.805.171


Exploitation of Resistant Sources to Phytophthora capsici Leon. from Genetic Stocks of Black Pepper (Piper nigrum L.)
K.M. Prakash1*, R.S. Bhai2, J. Jiji1, K.V. Saji2, V.S. Sujatha1 and A.V. Santhoshkumar3
1College of Horticulture, Vellanikkara-680656, Kerala Agricultural University, Thrissur, Kerala, India
 2Indian Institute of Spices Research Marikunnu P. O., Calicut - 673 012, Kerala, India
3College of Forestry, Vellanikkara-680656, Kerala Agricultural University, Thrissur,
Kerala, India
*Corresponding author
Abstract:

Intensive screening of black pepper germplasm through artificial inoculation was done at ICAR-Indian Institute of Spices Research, Kozhikode, (Kerala, India) to locate sources of resistance against Phytophthora foot rot incited by Phytophthora capsici Leon. adopting conventional stem and leaf inoculation procedure. The intact stem and leaf of 3-4 leaf stage rooted plants were inoculated and incubated for 72h at a temperature of 25 –28° C with a relative humidity of 80 – 90% for development of symptoms. The degree of resistance was rated based on the mean disease severity index (DSI) of leaf, stem and depth of penetration. Based on the mean DSI, the accessions were scored. Among the 20 accessions evaluated, none of them showed complete resistance to P. capsici infection. However, the accession 7259 showed moderate resistance with an overall mean DSI of 39.44%. Accession 7254 was found to be highly susceptible with a DSI of 91.66% followed by variety Panniyur5 (check) with mean DSI of 87.78%.


Keywords: Germplasm accessions, Black pepper, Phytophthora capsic, Piper nigrum, Resistance, Screening
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How to cite this article:

Prakash, K.M., R.S. Bhai, J. Jiji, K.V. Saji, V.S. Sujatha and Santhoshkumar, A.V. 2019. Exploitation of Resistant Sources to Phytophthora capsici Leon. from Genetic Stocks of Black Pepper (Piper nigrum L.).Int.J.Curr.Microbiol.App.Sci. 8(5): 1487-1497. doi: https://doi.org/10.20546/ijcmas.2019.805.171