# Introgression of QTLs for anthracnose resistance (Colletotrichum sublineolum) in an elite sorghum variety from Mali

Aiché Traoré Dite Diop, Karim Dagnon, Michel Vaksmann, Mohamed Doumbia, Fabien de Bellis, Caroline Calatayud, Aliou Sissoko, Mahamadou Diakité, Abdoulaye Diallo

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## To cite this version:

Aiché Traoré Dite Diop, Karim Dagnon, Michel Vaksmann, Mohamed Doumbia, Fabien de Bellis, et al.. Introgression of QTLs for anthracnose resistance (Colletotrichum sublineolum) in an elite sorghum variety from Mali. Sorghum in the 21st Century, Global Sorghum Conference, CIRAD; Kansas State University; Sorghum International Development; IRD; CERAAS, Jun 2023, Montpellier, France. pp.274. hal-05181974

HAL Id: hal-05181974

https://hal.science/hal-05181974v1

Submitted on 23 Jul 2025

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## Introgression of QTLs for anthracnose resistance (Colletotrichum sublineolum) in an elite sorghum variety from Mali

Aiché Traore Dite Diop<fnref n="1" /> (traoreditediopaiche@yahoo.fr), Karim Dagnon², Michel Vaskmann³, ⁴, Mohamed Doumbia⁵, Fabien De Bellis³, ⁴, Caroline Calatayud³, ⁴, Aliou Sissoko⁶, Mamadou Diakite⁷, Abdoulaye Diallo²

Sorghum (Sorghum bicolor), the fifth most cultivated cereal in the world, ensures food security for millions of people in Africa. Anthracnose (Colletotrichum sublineolum) is one of the most important disease in sorghum production areas in Mali. Anthracnose causes premature drying and defoliation resulting in low grain yield. The objective of this study is to improve sorghum resistance to anthracnose by introgressing resistance QTLs into an elite Malian sorghum variety. Study was conducted at the Sotuba station. Pathogen source consisted of C. sublineolum strains collected in the major sorghum production zones in Mali (Kita, Bougouni, Longorola, Farako, N'tarla, Signé, sirakelé, Bla and Cinzana). Tiandougou Coura, a highly susceptible to anthracnose Malian elite variety was used as a recurrent parent and three varieties (B35, Grinkan and E36-1) were use as donor for resistance to anthracnose. The QTLs were introgressed by molecular marker-assisted backcrossing method in order to obtain three BC3F3 populations (one population per donor parent). Population development was also accelerated by forcing floral initiation to allow the development of three generations per year. The BC3F4 plants are currently being phenotyped for anthrachnose resistance, yield traits, stover and grain quality.

<footnote n="1">¹ Sorghum program, Institut d'Economie Rurale, Bamako, Non applicable, Mali ; ² Sorghum program, Institut d'Economie Rurale, Bamako, Mali ; ³ UMR AGAP Institut, Cirad, Montpellier, France ; ⁴ AGAP Institut, Montpellier, France ; ⁵ Agroclimatology, Institut d'Economie Rurale, Montpellier, France ; ⁶ Agroclimatology, Institut d'Economie Rurale, Bamako, Mali ; ⁷ Institut d'Economie Rurale, Bamako, Mali</footnote>