Plant Breeding (2004) 123, 389-391

M. Ragiba, K.V. Prabhu and R.B. Singh (2004)
Recessive genes controlling resistance to Helminthosporium leaf blight in synthetic hexaploid wheat
Plant Breeding 123 (4), 389-391
Abstract: A study was conducted under controlled environment conditions in a phytotron to determine the nature of the inheritance of resistance Helminthosporium leaf blight (HLB) in a synthetic hexaploid wheat line, 'Chirya-3', against the isolate KL-8 of Bipolaris sorokiniana from the major wheat growing region of India. Crosses were made between two susceptible lines 'WH 147' and 'Chinese Spring'. Analyses of F₁ and F₂ populations of these two crosses ('WH 147' x 'Chirya-3' and 'Chinese Spring' x 'Chirya-3') showed that resistance against the isolate in 'Chirya-3' was governed by two recessive genes functioning in a complementary interaction giving an F₂ segregation pattern of 1 : 15 (resistant : susceptible). The segregation pattern of the resistant F₂ progenies in F₃ families from both crosses confirmed that two homozygous recessive genes were responsible for resistance to the isolate of Bipolaris sorokiniana in the synthetic line 'Chirya-3'. It is proposed that the genes be designated as hlbr1 and hlbr2.
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Link to article at publishers website
Database assignments for author(s): Ragiba Makandar

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bipolaris sorokiniana	Wheat (Triticum)	India