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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 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - 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.2018.7(2): 3375-3383
DOI: https://doi.org/10.20546/ijcmas.2018.702.404


Disease Reaction Studies of Heat Tolerant Maize (Zea mays L.) Inbred Lines under Artificial Epiphytotic Conditions against Turcicum Leaf Blight (Excerohilum turcicum) and Aspergillus flavus Contamination
K. Ajithkumar1*, A.S. Savitha2, Prakash H. Kuchanur3 and B. Rajanna1
1Main Agricultural Research Station
2Department of Plant Pathology, 3Department of Genetics and Plant Breeding, University of Agricultural Sciences, Raichur, Karnataka–584 104, India
*Corresponding author
Abstract:

Among biotic stresses affecting maize, the pre-harvest aflatoxin contamination produced by Aspergillus flavus and turcicum leaf blight (TLB) caused by Excerohilum turcicum are most important diseases in India. Resistance of maize to aflatoxin contamination and TLB, is a penultimate goal in breeding programs that screen for these important traits with the aim of developing resistant commercial hybrids. Hence a study on reaction of 26 inbred lines of heat tolerant maize to both the diseases was conducted under artificial epiphytotic field conditions for two seasons. Among 26 inbred lines evaluated for TLB, 10 lines namely CAH-1533, CAH-1505, CAH-158, CAH-1437, H-15002, E-5, CAH-1526, CAH-1454, CAH-1532 and CAH-1545 showed resistant reaction. Whereas five lines were found moderately resistant viz., CAH-1551, CAH-1504, CAH-1564, CAH-1536 and CAH-1501 and remaining were severely affected by TLB and rated them as susceptible. Study on reaction of 28 inbred lines for aflatoxin contamination revealed that, among them none were immune, whereas nine lines namely CAH-1546, CAH-1525, H-15001, ARLUM, CAH-1437, CAH-1503, CAH-1526, CAH-1545 and CI-4 were highly resistant to aflatoxin contamination. The resistant reaction was exhibited by 17 lines, while two inbred lines namely CAH-1551 and CAH-1501 showed moderately resistant to aflatoxin contamination. Thus the above lines were identified as promising sources of resistance and can be used successfully in developing desirable level of resistance in disease endemic areas to aim for sustainable productivity.


Keywords: Aspergillus, Inbred lines, Maize, Evaluation, Turcicum leaf blight
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How to cite this article:

Ajithkumar, K., A.S. Savitha, Prakash H. Kuchanur and Rajanna, B. 2018. Disease Reaction Studies of Heat Tolerant Maize (Zea mays L.) Inbred Lines under Artificial Epiphytotic Conditions against Turcicum Leaf Blight (Excerohilum turcicum) and Aspergillus flavus Contamination.Int.J.Curr.Microbiol.App.Sci. 7(2): 3375-3383. doi: https://doi.org/10.20546/ijcmas.2018.702.404