IDENTIFICATION OF RESISTANT SORGHUM GERMPLASM FROM THE USA AND WEST AFRICA TO LONG SMUT AND GRAIN MOLD
Crop Germplasm Research
2013 Annual Report
1a.Objectives (from AD-416):
The objective of this cooperative research project is to evaluate sorghum germplasm in several locations in Senegal and Gambia for resistance to long smut and grain mold.
1b.Approach (from AD-416):
Exotic and adapted sorghum accessions will be planted in several locations in Senegal and Gambia and evaluated for disease reaction. U.S. sorghum germplasm and inoculation protocol will be provided by the ARS cooperator. Weather data will be collected from each location. Data will be analyzed, and comparison among the accessions based on maturity groupings and other agronomic traits will be recorded.
The goal of this project is to identify resistant sources to long smut and grain mold among U.S. and West Africa sorghum germplasm resources. In FY 2013, 17 sorghum germplasm lines, including commercial hybrids and cultivars, were evaluated for resistance against long smut and grain molding fungi in production areas near the cities of Bambey and Nioro, Senegal, West Africa. The lines were rated for grain mold, with 1=no mold and 5=very moldy. All the hybrids and cultivars, including the resistant checks Tx 2911 and SC 719-11E, exhibited high grain mold infection at both locations. The long smut infection was very low at Nioro. No long smut infection was observed on the hybrids AP920 and AgriPro 2838 at Bambey, where infection was high. The results show that AP920 and AgriPro 2838 may be useful in long smut resistance breeding programs. Over the life of this Project, significant accomplishments were made in developing a consistent and reliable inoculation technique for mass screening of sorghum for long smut resistance, in identifying a number of hybrids and cultivars that may possess genes for resistance to both long smut and grain mold, and in publishing the information generated in appropriate outlets so as to most effectively reach the intended audience. This Project expired in FY 2013.