여교잡을 통한 케나프 바이오매스 우수 계통 선발

Development of Kenaf (Hibiscus cannabinus L.) Pedigrees with Superior Characteristics through Backcross

Multipurpose utilization, including as rope, pulp, and filtration media, is what makes kenaf (Hibiscus cannabinus L.) special. Thisexperiment was conducted to select elite pedigrees with high biomass production through backcrosses. The agronomic performance, fuelcharacteristics, and histological analysis of the elite lines were investigated at the BC1F2 generation in comparison with the Control. Significantdifferences were observed in 12 evaluations of variety and pedigrees. Five plants, including the two Controls (Jangdae and Hongma300) andthree pedigrees, showed a large difference in the number of flowering days from July 5 to September 30. The plant height of BC100-10(447 cm) was the highest among the genotypes. Regarding branch number, BC100-15 showed the best performance with 29 branches. Stemdry weight was found to be the lowest in Jangdea at 792 g, whereas BC100-17 showed the highest dry weight. Hongma did not set seedsowing to late flowering. However, with 34 g/plant on average, three elite lines had more seeds than Jangdae (16 g/plant), which are vulnerableto decay owing to viviparous germination. In the fuel characteristics analysis, the heating value of the three elite lines ranged from 4,510to 4,930 kcal/kg, which was much higher than that of the two Controls (4,320 kcal/kg). The ash content analysis indicated the lowest valueat 3.2% for the line BC100-10, which was similar to Korea’s 3rd-grade. Based on the histological analysis of the stem, the pedigrees wereclose to Hongma. Taken together, these three elite lines would be useful as genetic resources for high biomass production.