Submitted to: Annual Beet Sugar Development Foundation Research Report
Publication Type: Other
Publication Acceptance Date: September 5, 2002
Publication Date: N/A
Technical Abstract: Germination in aqueous solutions is a reasonable predictor of seedlot field emergence of sugarbeet. We used this approach to clone a gene that appears to be responsible for enhanced emergence. We have followed these experiments, previously done only at room temperature (23 C), to look at germination at different temperatures between a vigorous hybrid, US H20, and one that has less vigor, ACH 185. Maximum germination of both varieties in water was at 20 C, and US H20 germinated to a greater extent than ACH185 at temperatures 25 C and lower in both water and hydrogen peroxide. ACH185 showed higher germination at temperatures of 30 C and above, although no germination was seen at 40 C or above with either variety. Hydrogen peroxide had little effect in enhancing germination below 15 C. Germination under stress appears highly temperature dependent, and variability is apparent for low and high temperature germination optima.