Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effect of Plant Growth Regulators and Seed Priming Treatment on the Germination and Early Growth of Snapdragon (Antirrhinum majus L.)

식물생장조절제 및 priming 처리가 금어초 종자의 발아와 초기생육에 미치는 영향

  • Kang Jum-Soon (School of Bio-Resources, Pusan National University) ;
  • Choi In-Soo (School of Bio-Resources, Pusan National University)
  • 강점순 (부산대학교 생명자원과학부) ;
  • 최인수 (부산대학교 생명자원과학부)
  • Published : 2006.06.01
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Abstract

In this study, we investigated the effect of growth regulators, seed priming, and light condition for the germination and early growth in Snapdragon (Antirrhinum majus L.). The optimum concentration of growth regulator for the promotion of germinability turned out to be 250 uM of $GA_3$. The germination enhancement in combination of $GA_3+BAP$ was not significant. The optimum priming condition for the maximum germinability was 2 day treatment of 200 mM of $KNO_3$. which increased germination by 14% and shortened the day to germination by 3.5 days. The optimum temperature for germination was $15{\sim}25^{\circ}C$. The germination frequency was decreased to lower than 20% at $30^{\circ}C$, which showed that seeds of Snapdragon germinates better at low temperature than high temperature. The germination frequency was different at light condition; it was low at dark condition, but was increased by $15{\sim}20%$ at red light condition. The combination of $GA_3$ and seed priming showed better germinability than the single treatment of $GA_3$ and seed priming.

금어초에서 발아율을 증진시킬 수 있는 생장조절제 최적 처리조건은 $GA_3\;250{\mu}M$ 처리였다. 생장조절제 종류 중 $GA_3$가 BAP보다 발아증진 효과가 높았다. 그러나 $GA_3+BAP$ 혼용하면 발아촉진의 상승작용은 크지 않았다. 금어초에서 발아력을 극대화시킬 수 있는 최적 priming조건은 200 mM의 $KNO_3$ 화학제로 2일간 처리였는데, 무처리에 비해 발아율은 14% 증진되었고, 발아일수는 3.5일 단축되었다. 금어초의 발아적온은 $15{\sim}25^{\circ}C$였고, $30^{\circ}C$ 이상의 온도에서는 발아율이 20% 이하로 저하되어 금어초는 저온발아성 종자였다. 금어초는 발아중에 주어지는 광조건에 따라 발아율이 달랐다. 암상태에서는 저조한 발아율을 보였으나 발아과정중에 적색광이 주어지면 암조건에 비해 발아율이 $15{\sim}20%$ 상승되었다. 금어초에서 묘출현율과 초기생육을 향상시킬 수 있는 파종전 종자처리는 단독 $GA_3$ 및 priming처리보다는 priming과 $GA_3$ 조합한 처리였다.

Keywords

References

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