논문 상세보기
pp.248-253
자운영(Astragalus sinicus L. Line A) 종자의 발아와 묘신장을 네 온도(15, 25, 30 및 35℃ ), 세 polyethylene glycol(PGE) 10,000(MW) 용액(0, 20 및 25g/100mg H2O ), 그리고 다섯수준의 황산(중량기준 conc. H2 SO4 : Seeds; 0, 1:1 10분, 1:1 20분 1:1.5 10분 및 1:1.5 20분 침지)에 처리하여 측정한 결과를 요약하면 다음과 같다. 자운영의 발아율은 15℃ 에서 가장 높았으나 묘장은 25℃ 에서 가장 길었다. 발아율과 묘장 모두 PEG 무처리에서 25로 농도가 증가할수록 급격히 감소되었다. 15℃ 의 PEG 20과 25에서는 다른 온도보다는 높은 발아율을 보였다. 황산처리효과에서는 발아율과 묘장 모두 황산무처리와 같거나 감소되었다. 그러나 PEG 무처리의 경우에는 황산:종자비율 1:1.5에서 10분간 침지시에 발아율이 가장 높았다. 본 시험의 결과로는 종자의 발아는 수분의 영향이 가장 큰 것으로 보였다.
Germination and seedling growth of chinese milkyetch (Astragalus sinicus L. Line A) seeds were measured at four temperatures (15. 25. 30, and 35~circC ), three polyethylene glycol (PEG) 10.000 (MW) solutions (0, 20 and 25 g/100m~ell H2 O), and five sulfuric acid treatments (conc, H2 SO4 : Seeds/weight base: 0, 1:1 10min.. 1:1 20min.. 1:1.5 10min. and 1:1.5 20min, immersion), Adjustments of PEG 10.000 solutions were based on water potentials of 0.0, -0,5 and -0.8 ㎫ at room temperature. Observations were taken at 7 days for each treatment combinations. Germination percent of chinese mikvetch seeds was the highest at 15~circC and seeding length was the longest at 25~circC . Both germination percent and seedling length were rapidly decreased as PEG concentration increased from 0 to 25g/100m~ell H2 O. The highest germination percent was found at PEG 20 and 25 of 15~circC among those of four temperatures, Sulfuric acid treatments showed little effect on germination percent and seedling length compared to untreated control, However. in the case of PEG 0, greater germination perccent was obtained at the treatment of 1:1.5 for 10 minutes immersion, The result of this study-indicated that germination of chinese milkvetch seeds was affected mostly by moisture stress conditions.
