Abstract
Using the seeds ofEragrostis abyssinica SCHRAD., which had been harvested on September 9, 1970, and stored at the room, 5°C and -17°C storing conditions, germination behaviours, including days from sowing to germination, germination process, germination duration, final germination percentage, transition of germination pattern during the storage, were studied during the term from October, 1970, to December, 1971, repeatedly 15 times with a month intervals.
At the starting test period, germination started 1 day after sowing and continued during the 43 days, and germinated 80% of whole seeds used at the final date. Seed dormancy was not remarkably recognized. In the following germination test, it was ascertained that the earlier was the germination test, in other words, the shorter was the storage period, the longer was the germination duration. Final germination percentages once decreased, and afterwards they increased again at all the storing conditions. The lower was the storing temperature, the earlier was these decreasing and increasing pattern. The lower was the storing temperature, the smaller was the variation.
After 11 months storage, germination percentages of seeds stored at the room condition drastically decreased, but germination percentages of seed stored at the -17°C condition were kept at more than 80% even after 15 months storage. The decreasing process of final germination percentage of the seeds stored at the 5°C storing condition may be regarded as belonging to the middle phenomenon between them.
