Resistance in chickpea (Cicer arietinum) to Fusarium wilt race '0'
2010
Halila, I. | Rubio, J. | Millán, T. | Gil, J. | Kharrat, M. | Marrakchi, M.
To determine the inheritance of resistance to race 0 in chickpea five recombinant inbred line (RIL) populations developed from crosses using both resistant (WR315, CA1938, JG62) and susceptible (ILC3279, ILC5275, CA1796, PV1) parental lines were used. Assessment of resistance was based on wilting phenomenon in chickpea. The presence of the two major genes controlling resistance to race 0 of Fusarium oxysporum f. sp. ciceris (Foc) was tested by analysis of the distribution extremes for each RIL population using sequence tagged microsatellite sites markers tightly linked to each gene (TR59 for the locus Foc0₁/foc0₁ and TA59 for Foc0₂/foc0₂). The resistant gene Foc0₂/foc0₂ seems to be present in both CA1938 and WR315 resistant parents while the presence of the gene Foc0₁/foc0₁ was confirmed in the resistant parent JG62. Apart of these major genes imparting vertical resistance, other genes seem to be present related with slow wilting resistance to race 0 in WR315. In order to manage both vertical and slow wilting resistance, more efforts should be done to know the genetics of slow wilting and to map the gene(s) implicated.
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