Marker-assisted introgression of resistance to fusarium wilt race 2 in Pusa 256, an elite cultivar of desi chickpea

Pratap, A and Chaturvedi, S K and Tomar, R and Rajan, N and Malviya, N and Thudi, M and Saabale, P R and Prajapati, U and Varshney, R K and Singh, N P (2017) Marker-assisted introgression of resistance to fusarium wilt race 2 in Pusa 256, an elite cultivar of desi chickpea. Molecular Genetics and Genomics. pp. 1-9. ISSN 1617-4615

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Fusarium wilt caused by F. oxysporum f. sp. ciceris causes extensive damage to chickpea (Cicer arietinum L.) in many parts of the world. In the central part of India, pathogen race 2 (Foc 2) causes severe yield losses. We initiated molecular marker-assisted backcrossing (MABC) using desi cultivar, Vijay, as a donor to introgress resistance to this race (Foc2) in Pusa 256, another elite desi cultivar of chickpea. To confirm introgression of resistance for this race, foreground selection was undertaken using two SSR markers (TA 37 and TA110), with background selection to observe the recovery of recurrent parent genome using 45 SSRs accommodated in 8 multiplexes. F1 plants were confirmed with molecular markers and backcrossed with Pusa 256, followed by cycles of foreground and background selection at each stage to generate 161 plants in BC3F2 during the period 2009–2013. Similarly, 46 BC3F1 plants were also generated in another set during the same period. On the basis of foreground selection, 46 plants were found homozygotes in BC3F2. Among them, 17 plants recorded >91% background recovery with the highest recovery percentage of 96%. In BC3F1 also, 14 hybrid plants recorded a background recovery of >85% with the highest background recovery percentage of >94%. The identified plants were selfed to obtain 1341 BC3F3 and 2198 BC3F2 seeds which were screened phenotypically for resistance to fusarium wilt (race 2) besides doing marker analysis. Finally, 17 BC3F4 and 11 BC3F3 lines were obtained which led to identification of 5 highly resistant lines of Pusa 256 with Foc 2 gene introgressed in them. Development of these lines will help in horizontal as well as vertical expansion of chickpea in central part of India.

Item Type: Article
Divisions: Research Program : Genetic Gains
Uncontrolled Keywords: Backcrossing, Chickpea, BGS, FGS, MABC, Molecular breeding, SSR markers , Fusarium wilt, Desi chickpea
Subjects: Mandate crops > Chickpea
Depositing User: Mr Ramesh K
Date Deposited: 26 Jul 2017 10:38
Last Modified: 26 Jul 2017 10:38
Official URL:
Acknowledgement: The authors would like to thank Manish K. Pandey, Siva K. Chamarthi (ICRISAT), Subhojit Datta (ICAR-IIPR) and partners in ACIP programme from JNKVV, Jabalpur, ARS, Kalaburgi and MPKV, Rahuri for useful discussions during the course of this study. The authors are also highly thankful to Col Douglas, Senior Research Scientist, Agri-Science, Queensland, Australia for reading the manuscript for language corrections. The present study was supported under the Accelerated Crop Improvement Programme (ACIP) of Department of Biotechnology (DBT), Government of India vide Grant No. BT/PR11693/ AGR/02/641/2008, 22 October 2009. All laboratory and field facilities were provided by ICAR-IIPR Kanpur.
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