Genetic control and heritability of resistance to grain mold in F2:5 sorghum families with non-pigmented testa

R. Rodríguez-Herrera

rrh961@hotmail.com
Departamento de Investigaciones en Alimentos, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Apto. Postal 252 Saltillo, CP 25001 México (Mexico)

W.L. Rooney

Depatment of Soil & Crops Science, Texas A&M University. College Station, TX 77843-2474. USA (United States)

D.T. Rosenow

Texas Agric. Exp. Stn. Route 3, Box 219 Lubbock TX 79401-9757. (Mexico)

C.N. Aguilar-González

Departamento de Investigaciones en Alimentos, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, Apto. Postal 252 Saltillo, CP 25001 México (Mexico)

A.R. Quero-Carrillo

Colegio de Postgraduados, Salinas San Luis Potosí. México (Mexico)

Abstract

Grain mold limits the productivity of food-type Sorghum bicolor by reducing grain yield and quality. The disease is caused by a complex of fungi including Curvularia lunata, Fusarium sp., Alternaria sp. Phoma sp., and Helminthosporium sp. The presence of many fungal species and environmental factors make breeding and selecting for tolerance difficult. It is the goal of many sorghum breeding programs to improve this trait. However, further information on the heritability of the trait is needed...

Keywords:

Alternaria, Curvularia Fusarium, Helminthosporium, recombinant inbred lines