TITLE:
Evaluation of a Subset of Ethiopia Sorghum Collection Germplasm from the National Genetic Resources Program of the United States Department of Agriculture for Anthracnose Resistance
AUTHORS:
Louis K. Prom, Hugo E. Cuevas, Ezekiel Ahn, Thomas Isakiet
KEYWORDS:
Sorghum, Colletotrichum sublineola, Accession, Fungi
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.13 No.12,
December
21,
2022
ABSTRACT: Globally, one of the most devastating diseases of sorghum
is anthracnose incited by Colletotrichum sublineola. During the 2019 and 2020 growing seasons, 94
and 64 accessions from the Ethiopian sorghum germplasm collection maintained by
the National Genetic Resources Program of the United States Department of
Agriculture were evaluated for anthracnose resistance. Seeds were planted in
1.8 m rows with 0.9 m row spacing in a randomized complete block design. The accessions
and checks were replicated three times and 30 days
after planting, inoculated by placing C. sublineola-colonized grains in the plant whorls. A total
of 30 accessions, including PI533918, PI533923, PI534131 and PI534151 were resistant to the disease in both
years. These identified resistant
sources can be used in breeding programs to develop anthracnose-resistant lines and hybrids.