Studies on Green Panic Seed : VI. Effects of seed treatments on inhibition of germination in solutions with different concentrations of potassium chloride

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  • グリーンパニックの種子に関する研究 : VI.塩類濃度による発芽障害程度に及ぼす種子処理法の影響
  • グリーンパニックの種子に関する研究-6-塩素濃度による発芽障害程度に及ぼす種子処理法の影響
  • グリーン パニック ノ シュシ ニカンスルケンキュウ 6 エンソ ノウド ニヨ

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Abstract

Green panic seeds treated with soaking in running water and storing at temperature of 35℃ and differed in harvest date and volume weight were examined their germinating ability on filter paper moistened with water, KCl 0.03M and KCl 0.06M solutions. Tests were made 5 times in 3 years after seed harvest. Results obtained were as follows ; 1. At 8 months after harvest, seed stored at temperature of 35℃ since 1.5 months after harvest had already obtained the highest germination percentage in each solution. However, germination percentage of the seeds stored at room temperature was low even in water and poor in KCl solutions at this time. Germination percentage increased for one year after harvest, and then maintained nearly similar percentage in each solution for 1.5 years, untill the end of this experiment. 2. Seed stored at temperature of 35℃ showed higher germination percentage and faster germination rate than the seeds stored at room temperature, and the improvement of germination in KCl 0.06M solution was considerable. 3. Seed treatment, soaking seeds of 1.5 months after harvest in running water for 96 hours and then drying, gradually improved germination percentage in water for 2 years after the treatment. Thereafter, germination percentage of this treated seed was higher than that of not treated one. 4. Seed treatment, soaking seed of 1.5 months after harvest in running water for 3 hours and then drying, increased germination percentage in some degree at 7 months after the treatment, but afterwards it had no longer positive effect for germination. 5. Generally, heavy seeds (volume weights were about 340mg/cc) showed higher germination percentage than light seeds (volume weights were about 270mg/cc). 6. Germination behavior of seed harvested in mid-September was somewhat similar to that of the soaked seeds harvested in late August.

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