ISHS Acta Horticulturae 215: Seed Research in Horticulture
HIGH TEMPERATURE RESISTANCE OF YARD LONG BEAN (VIGNA UNGUICU LATA L. WALP. SUB. SP. SESQUIPEDALIS L. VERDC.) SEEDS. |
| Authors: | P. Thiraporn, T. Takano, A. Choomsai |
| Abstract:
Yard long bean seeds treated with dry hot air at 75°C for 7 days after predried at 45°C for 1 day could maintain their quality the same as untreated seeds over one year in a sealed tin can when they were stored in cold room (10°C, 55% RH). When these heat-treated seeds were stored over 6 months at room temperature (22–37°C, 57–89% RH), the percentage of emergence reduced at least 20% and 7-day seedling leaf area and 14-day seedling dry weight were decreased, although the percentage of germination was maintained until 1 year. Thermal injury did not appear in seedling of heat-treated yard long bean seeds so long as they were dried prior to the treatment and stored at 10°C, although the seeds immediately showed changes in biochemical indices such as electrical conductivity of seed leachate, water uptake rate, CO2 output and  -amylase activity.
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