Studies on Green Panic Seed : I. The use of seed volume weight in estimating quality of green panic seed

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  • グリーンパニックの種子に関する研究 : I.種子の良否判定における容積重の役割
  • グリーンパニックの種子に関する研究-1-種子の良否判定における容積重の役割
  • グリーン パニック ノ シュシ ニカンスルケンキュウ 1 シュシ ノ リョウヒ

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Abstract

1. The significance of seed volume weight in selecting good germinating seeds of green panic was investigated. 2. There were close correlations between seed volume weight on one hand and weight per 1000 seeds, ratio of "actual seed volume" to seed volume and the seed thickness measured under pressure of dial gauge on the other hand. "Actual seed volume" was measured using an apparatus for measurement of actual soil volume. Hence it was thought that these four seed characters were related equally to germination percentage. Actually the correlation coefficients were similar between these four seed characters and the germination percentage (r=0.81-0.85). 3. "Specific gravity" (seed weight/actual seed volume) and the seed thickness measured without pressure had no relation to germination percentage. 4. It was thought that in presuming germination percentage of green panic seeds, seed volume weight was most suitable criterion because of its relation to germination percentage and its easiness of measurement. 5. Seed lots with volume weight over 240mg/cc showed germination percentage more than 35%, and seed lots of 200-230mg/cc germinated at rates about 20%. Seeds of 200mg/cc or less germinated at rates less than 10%.

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