Inheritance of resistance to Fusarium wilt (race 2) in chickpea

Abstract

The inheritance of resistance to Fusarium wilt (race 2) of chickpea was studied in a set of three crosses, i.e. 'WR315' x 'C104' (resistant x susceptible), 'WR315' x 'K85O' (resistant x tolerant) and 'K850' x 'GW5/7' (tolerant x tolerant) in order to investigate the number of genes involved, their complementation and to find out whether resistant segregants are possible in a cross between two tolerant cultivars. Tests of Fl, F2 and F3 generations of these crosses under controlled conditions at ICRISAT, Patancheru, India, indicated involvement of three loci (two recessive and one dominant alleles). The homozygous recessive form at the first two loci conferred resistance whereas susceptibility occurred when the first two loci were in the dominant form. A dominant aliele at the third locus can complement the dominant alleles at the other two loci to confer tolerance. Occurrence of resistant segregants in a cross between two tolerant cultivars was observed.

Breeding, Genetics, and Genomics Approaches for Improving Fusarium Wilt Resistance in Major Grain Legumes

“…Likewise, other researchers have reported digenic inheritance for other races (0 and 2) of Foc (Tullu et al, 1999;Rubio et al, 2003). Previously, the digenic (a, b) nature of Foc2 resistance was also established based on the disease reaction of F 2 and F 3 individuals derived from WR 315 × C 104 (Kumar, 1998). Whereas Tekeoglu et al (2000) and Sharma et al (2004) reported monogenic inheritance of Foc 3 and Foc 5 resistance.…”

“…Notably, resistance to wilt is an essential prerequisite for variety identification and release in pigeonpea. Several pigeonpea varieties such as Asha (ICPL , 1998;Castillo et al, 2003 Chickpea Andoum 1 and Ayala (race 0) - Halila and Harrabi, 1990;Landa et al, 2006 Chickpea Surutato-77, Sonora-80, Tubutama, UC-15 and UC-27, Gavilan Mexico Morales, 1986;Buddenhagen et al, 1988;Helms et al, 1992;Sharma et al, 2005 Chickpea (Singh I. P. et al, 2016;Bohra et al, 2017).…”

“…Initial studies on genetic inheritance of FW resistance in grain legumes relied on Mendelian genetics. Literature in chickpea on FW inheritance suggests its control by major genes (Upadhyaya et al, 1983a,b;Kumar, 1998;Tullu et al, 1999). For example, genetic resistance against Foc1 results from the action of three independent loci h 1 , h 2 , and h 3 (Upadhyaya et al, 1983a,b;Singh et al, 1987a,b).…”

“…For example, genetic resistance against Foc1 results from the action of three independent loci h 1 , h 2 , and h 3 (Upadhyaya et al, 1983a,b;Singh et al, 1987a,b). Kumar (1998) also advocated involvement of three separate loci controlling Foc2 resistance. Likewise, other researchers have reported digenic inheritance for other races (0 and 2) of Foc (Tullu et al, 1999;Rubio et al, 2003).…”

Fusarium Wilt Affecting Chickpea Crop

“…Late wilting resistance is conferred by any one of these three genes, but a combination of any two of the late wilting genes confers complete resistance (h1h2 or h1H3 or h2H3) [12,23]. A similar genetic system based on two [70] or three [71] independent genes was found to confer resistance to race 2 [70,71]. Sharma et al [51] demonstrate that resistance to race 2 is governed by a single recessive gene, whereas resistance to race 3 has been found to be monogenic [51,72].…”