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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.2017.6(6): 1-20
DOI: https://doi.org/10.20546/ijcmas.2017.606.001


Advanced Breeding Strategies to Mitigate the Threat of Black Stem Rust of Wheat
F.A. Sheikh1*, Z.A. Dar, P.A. Sofi, Ajaz A. Lone and Nazir Ahmad Shiekh2
1Division of Genetics 1-20and Plant Breeding, Sher-e-Kashmir University of Agricultural Sciences and Technology, Kashmir, India
 2Department of Botany, Barkatullah University of Bhopal, M.P., India
*Corresponding author
Abstract:

The spread of stem rust race Ug99 and variants are threat to worldwide wheat production and efforts are being made to identify and incorporate resistance. A primary source of concern at present is that Ug99 (TTKSK and its variants TTKST and TTTSK) has overcome major sources of stem rust resistance genes e.g. Sr31, Sr38 and other important gene complexes which confer resistance to stem rust. Deployment of cultivars with broad spectrum rust resistance is the only environmentally viable option to combat these diseases. Therefore, identification, mapping and deployment of effective resistance genes are critical components of global efforts to mitigate this threat. Identification and introgression of novel sources of resistance is a continuous process to combat the ever evolving pathogens. Few stem rust resistance (Sr) genes derived from the primary and secondary gene pool of wheat confer resistance to TTKSK and its variants. Breeding resistant cultivars is the most realistic approach to protect wheat from stem rust. Deployment of combinations of effective genes “stacked” or “pyramided” in combination with APR genes should improve the durability of resistance in commercial cultivars by reducing the probability of corresponding simultaneous mutation events in the pathogen. Gene pyramiding is facilitated by the ability to use molecular markers closely or completely linked to resistance genes. Though Ug99 type of races have posed a threat to the wheat cultivation worldwide, several developing countries of South and West Asia have taken proactive steps to meet this challenge.


Keywords: Stem rust, UG-99, Molecular breeding, BGRI, MAS, MAB, MABC.
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How to cite this article:

Sheikh, F.A., Z.A. Dar, P.A. Sofi, Ajaz A. Lone and Nazir Ahmad Shiekh. 2017. Advanced Breeding Strategies to Mitigate the Threat of Black Stem Rust of Wheat.Int.J.Curr.Microbiol.App.Sci. 6(6): 1-20. doi: https://doi.org/10.20546/ijcmas.2017.606.001