Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effect of Priming Materials and its Concentrations on the Germination of Pasture Seed

Priming 약제의 종류와 농도가 목초종자의 발아에 미치는 영향

  • Published : 2006.12.30
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Abstract

Seed priming is a useful technique for early establishment of seedling. In this experiment, the conditions for priming of pasture seeds (tall fescue, orchardgrass, alfalfa and white clover) have been optimized to ensure an early germination and more uniform growth of seedlings. The experiment was conducted in a split plot design with three replications. The main plots consisted of five different materials such as $KNO_3,\;KH_2PO_4,\;K_3PO_4,\;Ca(NO_3){_2}$ and PEG. The subplots were consisted of three chemical concentration groups such as 500mM (or 10%), 100mM (or 20%) and 200mM (or 30%). Effect of priming materials and its concentrations were different in all four pasture seeds examined. Chemical concentration did not show any significant effects on the germination of tall fescue, however, germination of tall fescue primed with $Ca(NO_3){_2}\;and\;K_3PO_4$ materials were higher than the others. The concentration of prime materials did not affect on the germination of orchardgrass, but germination of orchardgrass primed with $KH_2PO_4$ was showed better result than the other materials examined. The seeds of alfalfa and white clover primed with PEG showed better germination capability than the other priming materials. In addition, chemical concentration of primed seeds also showed significant difference on the germination of alfalfa and white clover. These results suggest that seed priming induced earlier and higher germination for all four pastures tested. However, the, degree of priming effectiveness on pasture species depending on the priming materials and its concentrations.

종자의 priming은 유식물의 초기 정착에 중요한 기술 중의 하나이다. 따라서 본 시험에서는 목초의 주요 초종인 톨 페스큐, 오처드그라스, 알팔파 및 화이트 클로버의 발아율 향상과 균일도 증가를 위하여 priming 약제의 종류와 농도를 달리하여 발아율을 조사하였다. 본 시험은 분할구 배치법으로 주구는 $KNO_3,\;KH_2PO_4,\;K_3PO_4,\;Ca(NO_3){_2}$ 및 PEG 약제를, 세구는 50mM(또는 10%), 100mM(또는 20%) 및 200mM(또는 30%)의 약제농도를 두었다. Priming 목초의 발아율은 약제의 종류 및 농도에 따라 다르게 나타났다. 화본과 목초인 톨 페스큐는 $Ca(NO_3){_2}$와 $K_3PO_4$가 다른 약제보다 발아율이 높았으며, 오처드그라스는 약제간에 차이가 없었으나 $KH_2PO_4$가 다른 약제보다 발아율이 높았다. 한편 두과목초인 알팔파와 화이트 클로버는 모두 PEG에서 높은 발아율을 나타내었다. 한편 약제의 농도는 약제의 종류에 따라 달랐다. 이상의 결과를 종합해 보면 목초의 priming은 초종에 따라 적정 약제종류와 농도가 달랐다.

Keywords

References

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