ユリの鱗片繁殖に関する研究

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書誌事項

タイトル別名
  • ユリ ノ リンペン ハンショク ニ カンスル ケンキュウ
  • Studies on the Scale Propagation of Lilies.

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説明

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ユリの鱗片繁殖を行うにあたっての種々の条件が小球の発生・肥大におよぼす影響を1956年より1958年にわたり調査した.使用種類:鉄砲ユリ系4種, スカシュリ系2種, 鹿の子ユリ系2種.(I)鱗片着生位置による小球生成の差をみると外側から中辺の鱗片が早く肥大も早い.(II)母球の掘上げ時期および鱗片挿入時期の影響:掘上げは8月10, 20, 30日, 挿入は掘上げ後10日おきに3回づつ行った.結果は早掘, 早挿程すぐれた.(III)挿床材料の影響: 赤土, 鹿沼土, 川砂が小球の形成早く肥大もすぐれ鋸屑区の肥大は遅れた.(IV)挿床温度および湿度の影響:温度は25, 20, 15, 5〜22℃, 湿度は90, 60, 30%に区分.湿度は30, 60%, 温度は25, 15℃区が種類によりすぐれた.(V)母球低温処理の影響:0℃, 15, 30, 45日処理後挿入.赤鹿の子の発芽は1ヶ月促進され地上部の伸長は盛んになったが小球数及び肥大の差は明瞭でない.(VI)鱗片切断法の影響:切断により小球着生位置, 数, 大きさに顕著な差がなく縦断がややすぐれる.(VII)ジベレリン処理の影響:ジベレリン処理は小球の発生, 発根に抑制的に仂く.特に高濃度(100ppm)では激しい.

As the need is felt for the rapid propagation of high-quality lily bulbs, these experiments were undertaken to study some factors affecting the bulblet production in the scale propagation from 1956 to 1958. Factors tested were as follows: (I) The relationship of scale position in the parent-bulb to the bulblet formation: Rapid and good production of bulblets on scales from the outer and middle parts of parent-bulb was obtained. (II) The effect of the harvest time of parent-bulb and scaling time: Earlier harvest (Aug. 10) and scaling were favourable for producing much larger bulblets. (III) The effect of scaling media: Bulblet and root formation of scales taken in the media, Andosub-soil, Kanuma-soil, and river sand, were faster and larger than those taken in the vermiculite and sawdust. (IV) The effect of temperature and soil moisture: Temperature (15-25℃) and soil moisture (30-60%) favoured bulblet formation on the scales depending on the verieties used. (V) The effect of low temperature treatments of parent-bulbs: Storage of bulbs of Lilium speciosum at 0℃ for 15, 30, and 45 days were effective in stimulating the top growth. Treatments on L. maculatum var. spontaneum had little effect on the top growth but on L. longiflorum they had no effect. (VI) The effect of scale treatments: For the purpose of increasing the number of bulblets pre scale, scales were cut longitudinally or horizontally. No evident influence of treatments on the bulbletforming position on the scales, and number and size of bulblets were noted. Cutting scales longitudinally were somewhat beneficial for increasing yields. (VII) The effect of gibberellin treatments: The inhibiting effect on the bulblet and root formation was found by the applications of gibberelllins (50, 100 ppm).

source:The technical bulletin of Faculty of Horticulture, Chiba University

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