1a. Objectives (from AD-416):
1. To characterize selected germplasm lines of sorghum for response to cold stress at early season and at other specified stages of development.
1b. Approach (from AD-416):
Establish replicated field trial of sorghum lines in various locations to estimate genotype by environment interaction.
3. Progress Report:
We report the completion of replicated phenotypic characterization of the 226 RI lines from BTx623xPI567946 (B623*HKZ) for combined strong field emergence and seedling vigor under cool (54-56 F) soil conditions in South Dakota. This facilitates evaluation of cold responses under various location to determine environmental effects on expression of cold tolerance.