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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 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(8): 1690-1696
DOI: https://doi.org/10.20546/ijcmas.2019.808.199


Identification of Host Plant Resistance to Anthracnose in Greater Yam (Dioscorea alata L.)
R.S. Arya1, M.N. Sheela2*, M. L. Jeeva2 and P.V. Abhilash2
1College of Agriculture, Vellayani, Thiruvananthapuram 695 522, Kerala, India
2 ICAR- Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram 695 017, Kerala, India
*Corresponding author
Abstract:

Anthracnose, caused by Colletotrichum gloeosporioides Penz., is one of the most serious leaf and vine epiphytotic disease of greater yam (D. alata) in India. Forty greater yam accessions were screened in the field for resistance to anthracnose disease by whole plant area scoring method. The accessions were also evaluated for resistance in the laboratory using an excised leaf technique with pure isolates of Colletotrichum gloeosporioides Penz. Significant differences in the lesion/disease scores among greater yam genotypes, ranging from 0 (immune) to 5 (susceptible), were observed under both laboratory and field conditions. Resistance evaluations under both conditions consistently classified the genotypes as resistant and susceptible lines which is useful for future breeding programmes. Highly resistant lines viz. Da 110, Jas 2 and TCR 142 were identified for further evaluation and use in resistance breeding programmes.


Keywords: Greater yam, Dioscorea alata L., Anthracnose, Colletotrichum gloeosporioides, Screening, Resistance
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How to cite this article:

Arya, R.S., M.N. Sheela, M.L. Jeeva and Abhilash, P.V. 2019. Identification of Host Plant Resistance to Anthracnose in Greater yam (Dioscorea alata L.).Int.J.Curr.Microbiol.App.Sci. 8(8): 1690-1696. doi: https://doi.org/10.20546/ijcmas.2019.808.199