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Introgress of foc 4 QTL locus to develop "Super Annigeri-1" chickpea variety resistant to fusarium wilt through MABC

Mannur, D.M., Yeri, S.B., Mahiboobsa, M., Shankergouda, I., Thudi, M., Varshney, R.K.ORCID: 0000-0002-4562-9131, Gaur, P.M. and Jayalakshmi, S.K. (2016) Introgress of foc 4 QTL locus to develop "Super Annigeri-1" chickpea variety resistant to fusarium wilt through MABC. In: VII International Scientific Agriculture Symposium (Agrosym 2016), 6 - 9 October 2016, Jahorina, Bosnia and Herzegovina


Chickpea is an important food legume cultivated and consumed across the Indian subcontinent. Fusarium wilt is the major constraint in chickpea production. The wilt race confined to Northern-Karnataka region is caused by soil borne fungus Fusarium oxysporum f. sp. ciceris (foc 4). Thus marker assisted backcrossing (MABC) was attempted to introgress the foc 4 loci from WR-315 (wilt resistant) to elite cultivar Annegeri-1(A-1: wilt susceptible) (A-1× WR-315). For MABC three markers TA96, TA27-F and TR19-V conferring the foc 4 loci were used in foreground selection. Background selection was employed using 40 SSR markers that were evenly distributed on to all the 8 LG of chickpea genome. After two backcrosses and two rounds selfing, 67 families were found to be resistant to wilt under wilt sick garden and possessed good background genome recovery (78.85-94.83%). Of the 67 BC2F3 families top ten elite families with recurrent parent genome recovery of 91.07-94.83% were selected. The selected lines were homozygous and stable. Stringent phenotypic evaluation of advanced lines of BC2F3 families in wilt sick garden could confirm resistance to fusarium wilt Race-4. These elite lines are being evaluated for yield and yield attributing traits in multi-location trails to identify the best possible line as compared to local check for release and general cultivation in Northern-Karnataka region. The present investigation was accomplished with speedy development of elite "Super Annigeri-1" cultivar resistant to fusarium wilt, grain yield advantage that was otherwise susceptible, as early as in two backcrosses and selfing.

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