Tuber Yield and Size Distribution of Potato ‘Dejima’ (Solanum tuberosum L.) Affected by Stem Cutting Ages and Harvest Time in Aeroponics

다국어 초록 (Multilingual Abstract)

This study was carried out to investigate the effects of stem cutting ages and harvest time on the
growth and yield of potato ‘Dejima’ in aeroponics. The stem cuttings were produced from in vitro plantlets
and transplanted into an aeroponic system with 20, 30, 40 and 50 day-old stem cuttings (DOS). Tubers were
harvested 60, 70, 80 and 90 days after transplanting (DAT) and sorted into following categories: 1 ~ 5,
5 ~ 10, 10 ~ 20, 20 ~ 30, 30 ~ 40 and over 40 g. Plant height from the 40 DOS was the highest during the
growing periods but no significant difference was observed on 75 DAT. The tuber weight increased until 90
DAT with the greatest weight of tubers in the 20 and 40 DOS. However, there was no significant difference
among 20, 30 and 40 DOS in the number and weight of tubers. Harvesting at 80 and 90 DAT increased the
number of tubers over 5 g, which are usually considered as appropriate for direct field planting.

국문 초록 (Abstract)

본 연구는 경삽묘의 생리적 서령과 분무재배시 수확시기가 감자 ‘대지’ 품종의 생육과 수량에
미치는 영향을 조사하기 위하여 실시되었다. 경삽묘는 조직배양묘를 삽목하여 생산하였고 삽목 후 20,
30, 40, 50일된 경삽묘를 분무재배에 이용하였다. 분무재배시 정식 후 60, 70, 80, 90일에 각각 괴경을
수확하였고 수확한 괴경은 1 ~ 5, 5 ~ 10, 10 ~ 20, 20 ~ 30, 30 ~ 40, 40g 이상의 크기로 분류하였다. 삽목
한 후 40일이 경과된 경삽묘의 평균 초장이 전생육기간에 걸쳐 가장 길었지만 정식 후 75일에는 모든
연령의 경삽묘 간의 초장에 대한 유의차는 없었다. 주당 괴경중은 정식 후 90일까지 꾸준히 증가하였으
며 삽목 후 20일과 40일된 경삽묘를 정식할 때 가장 무거웠고 주당 괴경수도 가장 많았다. 그러나 50일
된 경삽묘를 제외하고 20, 30, 40일된 경삽묘 간에 통계적으로 유의한 차이는 없었다. 정식 후 80일과
90일에 수확하는 것이 5g 이상의 괴경 수확을 증가시키는 것으로 나타났다.

참고문헌 (Reference)

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