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RISS 인기검색어
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- 저자 : 李炳馹(Lee Byung Yil) (검색결과 3 건)
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미나리 實生繁殖法에 關한 硏究 : I. 미나리의 開花習性, 種子構造 및 發育過程
金炳云,金基德,李炳馹 서울大學校 農科大學 1987 서울대농학연구지 Vol.12 No.1
In order to find out an effective seed propagation method of Oenanthe stolonifera DC. which has been propagated vegetatively so far, several investigations on flowering habit and the structure and developing process of seed were caried out. The results were as follows: 1. Oenanthe stolonifera had the specific flowering habit of dominating the later bloomed clusters over the first cluster. 2. One stem had 4 to 5 flower clusters, and about 100 or more flowers/flower cluster bloomed in 5 days. 3. It was observed that ovule began to grow after the growth of ovary. The embryo formation took place in about 15 days and fully matured in 40 to 45 days after anthesis. 4. Mature fruit of O.stolonifera had a severe shattering habit.
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무우種子에 對한 PEG와 GA 處理가 低溫 感應性 및 抽臺에 미치는 影響
李炳馹,金炳云 서울大學校 農科大學 1985 서울대농학연구지 Vol.10 No.1
무우의 效果的인 低溫處理方法을 찾고자 PEG 및 GA와 PEG 混合 溶液 催芽種子를 生育段階別로 浸漬 低溫處理하거나 또는 播種箱에서 기른 幼植物에 生育段階別 低溫處理를 實施하여 하우스 栽植 後의 抽대ㆍ開花 栽相을 調査하는 한편 이와 關聯된 몇가지 試驗을 實施하였다. 그 결과를 要約하면 다음과 같다. 1. PEG 溶液 內에소의 發芽率은 品種, 處理溫度 및 PEG 濃度에 따라 달랐으며, 5℃의 경우 290g/kgH₂O 以上, 25℃의 경우 350g/kgH₂O에서 顯著히 낮았다. 2. 幼根의 伸張은 PEG 濃度가 높을수록 抑制되는 傾向에 있으며, PEG 350g/kgH?O에서 顯著히 抑制되었다. 3. 早期抽대 및 開花에 充分한 低溫感應을 위해서는 PEG 溶液 內 低溫處理 以前에 最小限 24詩間정도의 吸收를 시키는 것이 有利하였다. 4. 兩 品種 共히 低溫處理詩의 幼根長이 짧을수록, 低溫處理期間이 길수록 栽植 後의 抽대ㆍ開花가 促進되었다. 5. PEG와 GA 混合溶液內의 發芽率은 PEG 320∼350g/kgH₂O 以上의 濃度에서 顯著히 낮았다. 6. PEG 350g/kgH₂O 濃度의 溶液에서는 GA 濃度에 關係없이 幼根伸張이 抑制되었다. 7. 催芽種子는 兩 品種 共히 不催芽種子보다 顯著히 큰 低溫感應性을 나타내 抽대와 開花가 促進되었다. 8. 서울봄무우는 抽대所要日數가 짧고, GA 濃度에 따른 差異가 컸다. 9. 幼植物 自體에 對한 低溫處理效果는 發芽植後부터 處理한 區에서 가장 컸고, 發芽 後 植物體가 클수록 減少하는 傾向이 있었다. In order to investigate the effects of the PEG and GA on the low temperature treatment of radish (Raphanus sativus L.) seed and seedlings, PEG and GA were treated with different concentrations at various growth stages before and after germination, and their germination rate, radicle elongation, and the rate of bolting and flowering were tested. The results are summarized as follows; 1. The germination rate was variable according to the varieties, temperatures and PEG concentrations. At the PEG concentrations above 290 g/kgH₂O at 5℃ or 320g/kgH₂O at 25℃ the germination rate was remarkably decreased. 2. Radicle elongation decreased as the concentrations of PEG increased, and it remarkably decreased in PEG 350g/kgH₂O solution. 3. Water absorption for 24 hours was required for low temperature treatment for the favorable bolting and flowering. 4. Bolting and flowering rate increased as the length of radicles decreased and the duration of low temperature increased. 5. The germination rate in PEG+GA solution remarkably decreased at above PEG 320-350 g/kgH₂O concentration. 6. in PEG 350 g/kgH₂O solution, redicle elongation was suppressed regardless of GA concentration. 7. Germinated seed treatments showed greater low temperature sensitivity and increased bolting and flowering rate than non-germinated seed treatments. 8. Seoulbommoo showed shorter mean days to bolting and little differences at any GA concentrations. However, Tokinashi showed more differences along GA concentrations. 9. Seedlings which were treated with low temperature immediately after germination showed greatest effect of low temperature treatment and it decreased as the size of seedlings increased.
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