참억새(Miscanthus sinensis) 재배품종의 양적형질에 대한 통계적 분석

Statistical Analysis on Quantitative Characteristics of Miscanthus sinensis Cultivars

This study was conducted to investigate the effects of modified drum priming and 24-Epibrassinolide (24-EBL) treatment to improve the seed quality for export. 40, 50 and 60% seed moisture content (SMC) of hydrated seeds were incubated for 16 and 24 h in a container with a relative humidity of 99% at 26 rpm for a modified drum priming treatment. The treated seeds were sown at <TEX>$20^{\circ}C$</TEX> and <TEX>$30^{\circ}C$</TEX> (12/12h, light/dark) with four replications of 25 seeds on pleated paper. The seeds were hydrated with water or 24-EBL solutions of <TEX>$10^{-7}$</TEX>, <TEX>$10^{-8}$</TEX> and <TEX>$10^{-9}M$</TEX>, respectively. The germination of the modified drum primed seeds (24 h incubation after 60% SMC hydration) improved to 1.6 days mean germination time (MGT) and <TEX>$46%{\cdot}day^{-1}$</TEX> germination rate (GR), while the untreated seeds showed 2.1 days MGT and <TEX>$28%{\cdot}day^{-1}$</TEX> GR. The modified drum priming (60% SMC and 24 h incubation with <TEX>$10^{-9}M$</TEX> 24-EBL) showed improved results in MGT (1.8 days) and GR (55%) at <TEX>$20^{\circ}C$</TEX>, whereas untreated seeds showed 2.3 days MGT and 44% GR. Under <TEX>$30^{\circ}C$</TEX>, germination of modified drum primed seeds was significantly improved in GP (80%), GR (<TEX>$31%{\cdot}day^{-1}$</TEX>), HS (55%) and MGT (3.3 days), however, untreated seeds showed decreased GP (27%), GR (<TEX>$22%{\cdot}day^{-1}$</TEX>), HS (55%) and MGT (4.8 days). This study showed that the germination of lettuce seeds is enhanced by 24 h drum incubation with 24-EBL and this method can be used effectively to achieve the benefits of early germination and uniform seedling development. In addition, these treatments circumvent thermo-dormancy of lettuce seed and have a possibility of high-quality and environment-friendly seed processing.