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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
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.2020.9(10): 973-978
DOI: https://doi.org/10.20546/ijcmas.2020.910.116


Screening of Ber (Zizyphus mauritiana Lamk) Cultivars / Germplasm against Alternaria alternata (Fr.) Keissler Causing Alternaria Leaf Spot
Akash Kumar*, H. K. Singh and Satya Prakash Vishwakarma
Department of Plant Pathology, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya-224 229 (U.P.) India
*Corresponding author
Abstract:

Ber (Zizyphus mauritiana Lamk) is one of the important fruit crops of arid and semi arid zones of the world. In India though it is a minor fruit but recently the ber become an important cash crop in some areas and its acreage and production are increased. Due to rapid spread of commercial cultivation, the crop is also affected by different biotic and abiotic factors including pathogens causing many serious diseases. Among the diseases, Alternaria alternata is one of the most important, widespread and easily recognized disease. The disease is characterized by the formation of small, irregular brown spots on upper surface of leaves. Corresponding lower side appears with dark brown to black spot 3 to 6 mm in diameter with a gray to tan centre and distinct brownish yellow margins. Under humid conditions, black patches comprising plenty of conidia can be seen and which severe as air borne inoculation. As in case of ber plants, under severe conditions many spots coalesce to form big patches and later such leaves defoliated from branches. In varietal screening, forty varieties/germplasm was screened against Alternaria alternata (Fr.) Keissler. It was recorded that none of the variety was found free from disease and only 3 germplasm, Narendra ber Selection-1 (3.50%) Seo (4.0%) and Narendra ber Selection-2 (4.60% area covered with the pathogen) were found resistant and 20 genotypes having disease intensity 5.01 to 20% area covered with the pathogen were moderately susceptible, 13 genotypes having disease intensity to 20.01 to 50% area covered with the pathogen were susceptible and 4 genotypes namely genotypes having disease intensity > 50% area covered with the pathogen were found highly susceptible.


Keywords: Ber, Zizyphus mauritiana
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How to cite this article:

Akash Kumar, H. K. Singh and Satya Prakash Vishwakarma. 2020. Screening of Ber (Zizyphus mauritiana Lamk) Cultivars / Germplasm against Alternaria alternata (Fr.) Keissler Causing Alternaria Leaf Spot.Int.J.Curr.Microbiol.App.Sci. 9(10): 973-978. doi: https://doi.org/10.20546/ijcmas.2020.910.116