福岡県農業総合試験場研究報告25 (2006) pp 53 - 57
カルセオラリア‘Ｆ1ミダス’1，2月出し切り花生産技術
松野孝敏※・黒柳直彦1）・國武利浩・坂井康弘2）・巣山拓郎
(花き部)
カルセオラリア‘F１ミダス’の1，2月出し栽培のための催芽処理方法，育苗温度，定植後の夜間最低温度および長日処理期間について検討した。
播種後1週間，5，10，15℃で催芽処理した後，30℃暗黒条件下での発芽率の推移を調べた結果，出庫4日後の発芽率は催芽処理温度温度15℃では92.5％，10℃では91.5％，同5℃では0％となった。播種後10℃で0，3，7日間催芽処理した後，30/25(昼/夜温)，30/20℃および成行き下で発芽率の推移を調べた結果、発芽温度にかかわらず7日間処理した場合の発芽率が最も高くなった。育苗温度と苗の生育および切り花形質との関係では，25/15℃に比べ30/20℃で苗の生育が早く，切り花形質がすぐれ，収穫が早くなった。
夜間最低気温5，7および10℃で栽培した結果，10℃で開花日が早くなったが、7℃で切り花長と切り花重が大きくなった。
摘心後からの長日処理(暗期中断4時間)を4，6，8週後および収穫開始まで設定した結果，摘心8週間後までの長日処理によりの開花が最も早くなり，切り花品質が優れた。
［キーワード：カルセオラリア，Ｆ1ミダス，催芽処理，育苗温度，長日処理，1，2月出し栽培］
Cutflower production from January to February of Calceolaria 'F1 Midas'. MATSUNO Takatoshi, Naohiko KUROYANAGI, Toshihiro KUNITAKE, Ysuhiro SAKAI and Takuro SUYAMA (Fukuoka Agricultural Research Center, Chikushino, Fukuoka 818-8549, Japan) Bull. Fukuoka Agric. Cent. 25: 53 - 57 (2006)
An investigation of Calceolaria'F1 Midas' was made to examine the flowers harvested from January to February in terms of raising seedling temperature, controlling the minimum nighttime temperature and the term of the night break.
For one week after seeding, Calceolaria 'F1 Midas' were kept at 5, 10 and 15℃ for germination induction treatment, and then brought to a dark environment of 30℃.
The seed germination rate at 15℃was 92.5% after four days. The germination rate at 10℃was 91.5% at the end of treatment. The germination rate at 5℃was 0%. 'F1 Midas' were kept for 0, three and seven days at 10℃ to hasten germination and then brought to an environments of 30/25, 30/20℃ (day/night) and natural temperatures. The germination rate of those treated for seven days proved highest, regardless of raising seedling temperature.
'F1 Midas' seedlings were kept at 30/20 and 25/15℃(day/night). The 30/20℃ seedlings grew faster and produced better quality cut flowers and allowed for harvesting earlier than those grown at 25/15℃.
'F1 Midas' were tested for flowering time and the quality of their cut flowers under minimum night temperatures of 5, 7 and 10℃. The 10℃ minimum night temperature accelerated flowering time and 7℃ increased the length and weight of the cut flowers.
'F1 Midas' were provided light from the time of pinching for 4, 6 and 8 weeks and till the start of harvest by night break (22:00 - 2:00). The 'F1 Midas' lighted for eight weeks flowered earliest and produced high quality cut flowers.
[Keywords: Calceolaria, 'F1 Midas' hastening of germination, raising seedling temperature, long day treatment, cut flower production from January to February]
