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폐쇄형식물생산시스템을 이용한 감자 경삽묘 육묘시 묘소질과 괴경 생산에 대한 LED 광도의 영향
조만현,함인기,박권서,조지홍,Jo, Man Hyun,Ham, In Ki,Park, Kwon Seo,Cho, Ji Hong 한국작물학회 2020 한국작물학회지 Vol.65 No.4
This study was performed to establish light intensity conditions for producing stem cuttings for aeroponic systems suitable for seed potato production using a closed-type plant production system. Shoot tip cultured plantlets of 'Sumi' and 'Chubaek' potato (Solanum tuberosum L.) were acclimatized, cuttings were collected, and stem cuttings were planted. The seedlings were raised for 40 days at different LED light intensities (60, 120, 180, and 240 μmol·m<sup>-2</sup>·s<sup>-1</sup>), and were cultivated in an aeroponic system for 80 days. When stem cuttings were raised at 60 μmol·m<sup>-2</sup>·s<sup>-1</sup> LED light intensity, the plant height was the longest, at 17.3 cm for 'Sumi' and 16.1 cm for 'Chubaek', and the number of nodes was the highest in both cultivars. The higher light intensities, produced smaller plants with fewer nodes. The leaf areas, SPAD values, and Fv/Fm values differed slightly between cultivars. The fresh weight of stem cuttings, and the production rate of healthy stem cuttings were the highest at 60 μmol·m<sup>-2</sup>·s<sup>-1</sup>. In the aeroponic system, seedlings raised at 60 μmol·m<sup>-2</sup>·s<sup>-1</sup> with LED light intensity showed a difference between the cultivars, but the fresh weight of stems and leaves above the planting plate was the heaviest. In addition, below the planting plate the stem cuttings were longest and the root weight was heaviest at 60 μmol·m<sup>-2</sup>·s<sup>-1</sup> LED light intensity. The number of stolons also differed between cultivars, but was greatest for seedlings raised at 60 μmol·m<sup>-2</sup>·s<sup>-1</sup> LED light intensity, at 4.2/plant for 'Sumi' and 7.7/plant for 'Chubaek'. At 60 μmol·m<sup>-2</sup>·s<sup>-1</sup> LED light intensity, the tuber number and total tuber weight were the best, but the higher the light intensity, the smaller the total tuber number and total tuber weight for both cultivars. In conclusion, when producing potato stem cuttings for aeroponic systems using a closed-type plant production system, the most suitable LED light intensity for raising seedlings was found to be 60 μmol·m<sup>-2</sup>·s<sup>-1</sup>.
구기자나무(Lycium chinense Mill.) 유식물체의 자엽하배축으로부터 고효율의 부정아 형성과 식물체 재생
조만현,함인기,이봉춘,김재훈,이원석,권석윤,이행순,곽상수,Jo, Man-Hyun,Ham, In-Ki,Lee, Bong-Chun,Kim, Jae-Whune,Lee, Won-Seok,Kwon, Suk-Yoon,Lee, Haeng-Soon,Kwak, Sang-Soo 한국식물생명공학회 2004 식물생명공학회지 Vol.31 No.3
두 품종 (청양재래, 명안)의 구기자나무 (Lycium chinense Mill.) 유식물체를 자엽하배축의 자엽 일부분만 남기고 절단 후, 절단면이 1.0 mg/L zeatin이 첨가된 MS배지에 접하도록 하여 암소에서 3주 배양한 후 명소로 옮겨 배양하였을 때 자엽하배축 절단면으로부터 부정아가 고빈도 (80% 이상)로 유도되었다. 그러나 자엽하배축절편을 암소에서 전 배양하지 않고, 명소에서만 배양 하였을 경우 부정아는 유도되지 않았다. 자엽하배축 절단면에서 유도된 부정아를 분리하여 1.0 mg/L IAA가 함유된 발근배지에서 4주간 배양하여 뿌리를 유도하였다. 잎과 뿌리가 잘 발달한 소식물체는 화분에 옮겨 키웠을 때 정상적인 형태의 재분화 식물체로 성장하였다. To establish high frequency shoot formation from two cultivars (Cheongyangjaerae and Myungan) of boxthorn (Lycium chinense Mill.), hypocotyl segments with cotyledons from seedlings were used as explants. High frequency adventitious shoot formation (more than 80%) were obtained from hypocotyl segments with cotyledon on MS medium supplemented with 1.0 mg/L zeatin, when precultured for 3 weeks under dark conditions followed by transfer to light conditions. But there was no shoot induction in the explants cultured without preculture under dark conditions. Roots were induced from the shoots when transferred to rooting medium supplemented with 1.0 mg/L IAA for 4 weeks. Regenerated plantlets were grown to normal mature plants in soil.