Sorghum (Sorghum bicolor L.) has the potential to become a widespread commercial feedstock crop in Pennsylvania, either in rotation with maize (Zea mays L.) or grown alongside it. In other locations where sorghum has been grown for a long time, it is attacked by Colletotrichum sublineola Henn. ex Sacc. & Trotter, a fungal pathogen that causes anthracnose (Colletotrichum sublineola) leaf blight (ALB), thereby diminishing yield. Field surveys were carried out in 2011, 2012, and 2016 to monitor the presence of C. sublineola in commercial sorghum fields in six Pennsylvania locations. Senescing, lower leaves developed lesions that yielded Colletotrichum sp., including isolates of C. sublineola. The pathogen was not recovered from field debris, and ALB symptoms were not observed on the younger leaves of plants. In preparation for widespread cultivation of sorghum in Pennsylvania, we evaluated the performance, in field and greenhouse tests, of 158 experimental lines and commercial hybrids, which had been improved in several states in the United States and in other parts of the world. Sources of resistance to ALB and other foliar diseases were discovered that should be useful in breeding programs targeted for Pennsylvania and for northeastern U.S. climatic conditions. Lines received from ICRISAT, especially ICSB94, showed the highest level of resistance in the field.
|Number of pages||16|
|State||Published - Jul 1 2021|
Bibliographical noteFunding Information:
Authors acknowledge the following institutions and people for providing sorghum seeds to conduct field and greenhouse experiments: Jianming Yu, Iowa State University, Geoffrey Morris, Colorado State University; Jeff Pedersen and John Toy, Grain, Forage & Bioenergy Research, USDA-ARS, Lincoln, NE; Chad Hayes, USDA-ARS, Lubbock, TX; Greg Roth and Chris Houser, Penn State University, University Park, PA. Authors acknowledge Paul Craig, Former Extension and Program Leader for Field and Forage Crops and Renewable Natural Resources at Penn State, and Robert B. Guyer of Kulp Family Dairy for assistance with locating sorghum fields, and Scott Harkcom (Research Farm Manager) and his staff for assistance with field trials. Funding to conduct this research was provided by a USDA-NIFA award 2011-67009-30017 to SC, IG, SRP, and LV, and AES awards PEN04330 and PEN04613 to S.C. Funding from Fundacion Alfonso Martin Escudero for postdoctorate research of GVS at Pennsylvania State University is acknowledged.
Funding to conduct this research was provided by a USDA‐NIFA award 2011‐67009‐30017 to SC, IG, SRP, and LV, and AES awards PEN04330 and PEN04613 to S.C. Funding from Fundacion Alfonso Martin Escudero for postdoctorate research of GVS at Pennsylvania State University is acknowledged.
© 2021 The Authors. Crop Science © 2021 Crop Science Society of America.
ASJC Scopus subject areas
- Agronomy and Crop Science