Accelerated Aging Technique for Estimation of Sweet-Corn Seed Storability

Abstract

A range of exposure periods and temperatures for accelerated aging were eamined using an aging chamber, for teh sweet-corn vriety Thai Supersweet Composi = 1 DMR. The temperatures and exposure periods were : 41 C for 72, 96 and 120 hours; 42 C for 84, 96 and 120 hours; 43 C for 48. 72 and 96 hours. Relative humidity was maintained in teh range 98 - 100 percent. After the treatments, samples were taken for viability and field establishment studies; the storability of the teated seed was then monitored at two month intervals when kept in 2 mm thick plastic storage bags at ambient temperature. The aging treatment combination which most closely correlated with 6-7 months of open storage was a 48 hours exposure period at 43 C. this treatment is suggested for the accelerated aging test for weeet corn seed, for determination of sse viability and vigor.