Campus Units
Agronomy
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
2014
Journal or Book Title
Crop Science
Volume
54
Issue
6
First Page
2631
Last Page
2638
DOI
10.2135/cropsci2014.01.0025
Abstract
Sorghum [Sorghum bicolor (L.) Moench] is well known for its great potential to produce grain, feed, and fuel under stressful conditions such as drought and heat. However, its genetic potential to withstand cold, wet environments at germination has not been extensively exploited due to limited sources of early season cold tolerance. The objective of this study was to select novel, not previously characterized, cold-tolerant sorghum accessions that can germinate in a traditional cold test at 10°C in the laboratory and emerge in the field under a wide range of stressful conditions. Fifty six accessions (38 Kaoliangs and 18 non-Kaoliang of different geographic origin) were screened in the laboratory using a 7-d and a 14-d cold test at 10°C with soil, and they were also evaluated under early planting conditions in the field at two locations in the Midwest. The 7-d cold test was the best predictor of seed emergence in the field (r=0.50-0.61), while the standard germination test overestimated field performance. Twelve of the top 15 accessions exhibiting cold tolerance in the 7-d cold test were also ranked within the top 15 under field conditions. Eight novel accessions were identified in this experiment with potential superior alleles for cold tolerance. Breeders could perform preliminary screening of germplasm for cold-tolerant alleles in the laboratory using the 7-day, 10°C cold test.
Copyright Owner
Crop Science Society of America
Copyright Date
2014
Language
en
File Format
application/pdf
Recommended Citation
Salas-Fernandez, Maria G.; Schoenbaum, Gregory R.; and Goggi, A. Susana, "Novel Germplasm and Screening Methods for Early Cold Tolerance in Sorghum" (2014). Agronomy Publications. 513.
https://lib.dr.iastate.edu/agron_pubs/513
Included in
Agriculture Commons, Agronomy and Crop Sciences Commons, Plant Breeding and Genetics Commons
Comments
This is a manuscript of an article published as Salas Fernandez, Maria G., Gregory R. Schoenbaum, and A. Susana Goggi. "Novel germplasm and screening methods for early cold tolerance in Sorghum." Crop Science 54, no. 6 (2014): 2631-2638. doi: 10.2135/cropsci2014.01.0025. Posted with permission.