Germplasm collection of lily in the mountainousarea is laborious and time consuming accompanied withhigh costs and high risk due to inappropriate environmentalconditions. Cryopreservation being an ideal method for thelong-term preservation can be employed in conservation ofvaluable lily germplasm. Previously, we developed cryo-preservation protocol for Lilium germplasm using ‘dropletvitrification’. In this paper, we have chosen shoot tips as amaterial for cryopreservation because of their genetic safetyupon regrowth in tissue culture. Using this protocol, wehave preserved approximately 160 accessions of lily germ-plasm in 2010~2012. The regeneration rates are rangedfrom 54.3% to 58.5% while the survival rates were from58.3% to 66.4%. Among Lilium germplasm cryopreserved,there are some Korean, Chinese, and Taiwanese seedstocks which have good qualities for inter-species hybrid.Moreover, we also conserved Korean wild endangered seedstock, especially Lilium hansonii. The morphological studyof Lilium germplasm regenerated from cryopreserved mate-rial confirmed the stability of clonal material following cryo-preservation. We anticipate this cryo-collection will beavailable and useful to curators or breeders of Lilium andthis cryobank will also facilitate the conservation and inter-national exchange of Lilium germplasm.

나리속(屬) 식물(植物)에 있어서 차광정도(遮光程度)에 따른 종(種) 혹은 품종간(品種間)의 광반응(光反應)의 차이(差異)를 구명(究明)하여 약광(弱光)에 둔감(鈍感)한 식물(植物)의 선발(選拔)과 차광(遮光)이 주아형성(珠芽形成)에 미치는 영향(影響)을 알아보고자 자연광처리(自然光處理)(대조품(對照品)) 및 약 30%, 50%, 75%, 90%의 차광(遮光) 조건하에서 실험하여 얻은 결과(結果)는 다음과 같다. 개화율(開花率)에 미치는 차광(遮光)처리의 효과는 'Roma'를 제외한 공시품종 모두 75% 차광(遮光)처리까지는 차광(遮光)정도가 심할수록 증가하는 경향(傾向)이었으나 95% 정도의 극심한 차광(遮光)처리구에서는 공시 품종 모두 매우 낮은 개화율을 보였다. 화수(花數)에 미치는 차광(遮光)처리의 효과도 이와 동일한 경향(傾向)이었다. 개화소요일수(開花所要日數)에 미치는 차광(遮光)처리의 영향을 보면 공시품종 모두 차광(遮光)이 심할수록 개화소요일수가 길어지는 경향(傾向)이었으나 'Roma'와 Tiger lily가 개체로 둔감(鈍感)하여 대조구와 7일의 차이를 보인 반면, 다른 품종은 12-13일 정도의 차이를 보였다. 공시품종 모두 본엽수(本葉數)에는 차광(遮光)이 그다지 큰 영향을 미치지 않았으나 Tiger lily와 'Connecticut king'에서는 차광율(遮光率)이 높아질수록 본엽수가 감소(減少)되었다. 포엽수(苞葉數)에 있어서는 공시 품종 모두 차광율(遮光率)이 높아질수록 감소(減少)되는 경향(京鄕)이었다. 초장(草長)과 절간(節間)은 차광율(遮光率)이 높아질수록 길어지는 경향(傾向)이었는데 'Georgia'가 가장 높은 신장율(伸長率)을 나타냈다. 주아(珠芽)형성과 생육 정도에 미치는 차광(遮光)의 영향을 보면 'Enchantment'와 Tiger lily는 차광율(遮光率)이 높아질수록 전체(全體) 주아수(珠芽數)와 주아중(珠芽重)이 감소(減少)되었다. 그러나 'Enchantment'의 경우 포엽부위(苞葉部位)에 발생된 주아(珠芽)의 중량(重量)이 타 부위에서 형성된 주아(珠芽)보다 약간 무거운 경향(傾向)을 보였다. 'Connecticut king'과 'Roma'의 주아형성(珠芽形成)은 차광(遮光) 75%와 90%처리구에서 재배한 식물의 줄기 상부(上部)에서만 관찰(觀察)되었다. 주아(珠芽)의 인편엽(隣片葉) 출엽율(出葉率)에 있어서는 'Enchantment'와 'Connecticut king'에서만 관찰(觀察)되었고, 특히 포엽(苞葉)부위에서 형성된 주아(珠芽)에서만 관찰되었는데 차광(遮光)정도가 강(强)할수록 출엽율(出葉率)이 양호(良好)하였다.

The karyotype analysis of various Lilium species native to Yun nan, Northeast China, viz., L. sulphureum, L. nepalense var, L. wenshanense, L. nepalense and L. brownie var. were observed through ordinary tablet compressing method. The results indicated that the chromosome number was 2n=2x=24 in all the species studied. The karyotype formula was 2n=2x=24=2m + 6sm (2SAT) + 4st+12t (4SAT) for Lilium sulphureum; 2n=2x=24=2m + 10st (2SAT) + 12t (4SAT) for Lilium nepalense var.; 2n=2x=24=2m + 2sm+8st (6SAT) +12t (2SAT) for Lilium wenshanense; 2n=2x=24=4m (4SAT) + 10st (4SAT) + 10t for Lilium nepalense; 2n=2x=24=2m + 2sm+10st + 10t for Lilium brownii var. The As.K value (the ratio between long arm and total chromosome length) and the ratio of the length of the longest and the shortest chromosome were recorded as 78.25%~83.71% and 1.83~2.18 respectively. The karyotype of all the species was 3B except for L. nepalense which was 3A. Comparatively, the karyotype analysis of Lilium nepalense var. and Lilium nepalense were similar and genetically close to each other. A great diversity in chromosome morphology was existed among different populations or cultivars of the same species. The genetic diversity of different species or populations could be discriminated thru the number and position of different kinds of chromosomes, as well as the difference of satellite number and positions.

This study was conducted to establish the optimal condition for conservation of genetic resources and micropropagation of Lilium cernum. Induction of bulbet of L. cernum was highly effective (9.2 bulb/explant) on 1/2 SH (Schenk and Hildebrandt) medium supplemented with 1.0 mg/L TDZ (Thidiazuron) and 0.1 mg/L NAA (Naphthaleneacetic acid). The treatment of 0.1 mg/L NAA increased root development (6.4 root/explant) under the in vitro condition. In addition, treatments of AC (Activated Charcoal) and ventilation were enhanced to develop number of shoots and to elongate length of leaf, bulb and root. Futhermore, the process of short-term soil acclimatization was promoted to strengthen the plantlets induced under the in vitro condition.