Studies on Green Panic Seed : III. Changes of germination with storage time and storage method

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  • グリーンパニックの種子に関する研究 : III.発芽率の経時変化および種子貯蔵法
  • グリーンパニックの種子に関する研究-3-発芽率の経時変化および種子貯蔵法
  • グリーン パニック ノ シュシ ニカンスルケンキュウ 3 ハツガリツ ノ ケイ

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Abstract

1. Germination percentage of green panic seed was very low immediately after harvesting and increased till January of the next year, and it was practically constant for 5 months afterwards. In summer, germination was inhibited, but in the following autumn and thereafter, germination percentage increased still more. 2. The days required for biginning germination in the germination test were 10-20 days in the seeds of a month after harvesting, however, the days decreased gradually with passing of time. The shortest period was 2-4 days and it was recognized in 4 months after seed harvesting in some seed lots, but till 9 months in many seed lots. 3. Till 9 months after seed harvesting, germination rates of seed stored in the temperature range of 20-40℃ (storage in high temperature) were better than the rate of seed stored in a paper envelope in a desiccator at room temperature (storage by usual method). Between 13 and 18 months after seed harvesting, seed stored in high temperature and seed stored by usual method were similar in germination percentage, but seed stored at 30℃ or 40℃ germinated faster. Between 2 and 6 years after seed harvesting, seed stored by usual method was similar to or better than seed stored at 10℃ in germination rate, and storage by usual method was considered to be suitable and practical for sowing during this period.

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