Scientific Reports of the Faculty of Agriculture, Okayama University
Published by the Faculty of Agriculture, Okayama University
ONLINE ISSN : 2186-7755

セル成型苗の低温貯蔵期間および温度がキク,シュッコンカスミソウおよびカーネーションの移植後の初期生育に及ぼす影響

後藤 丹十郎 岡山大学
正岡 啓史 岡山大学
景山 詳弘 岡山大学
小西 国義 岡山大学
抄録
Experiments were conducted to determine the effects of cold storage duration and temperature of transplants in cell flat on the initial growth of Dendranthema grandiflora Kitamura, Gypsophila paniculata L. and Dianthus caryophyllus L. Cuttings were grown in 220 cell trays (cell volume 12 ml). The 14 days old transplants of Dendranthema and 20 days old Gypsophila and Dianthus were stored for 0,10,20 and 30 days at 1℃ and 10℃ under dark conditions. After storage the plants were transplanted into wooden containers and harvested 30 days after transplanting. In Dendranthema, the growth during the 30 days after transplant decreased with increasing storage duration. After 30 days from transplant, the increasing rate of plastchlon index of transplants stored for 30 days at 1℃ decreased compared with those stored at 10℃. IN Gypsophila, node number and stem length increased during storage at 10℃, but not at 1℃. When stored for 30 days at 10℃, the lower leaves of transplants were dead and the transplants were excessively elongated. After 30 days from transplant, the survival rate of transplants stored for 30 days at 1℃ and 10℃ was 90% and 50%, respectively. In Dianthus, node nunber and stem length of transplants stored at 10℃ increased with increasing storage duration. After 30 days from transplant, the lateral shoot number of transplants stored for 20 and 30 days at 1℃ decreased. Compared with Dendranthema and Dianthus, the growth after transplanting of Gypsophila was considerrably affected by cold storage duration and temperature. Dendranthema and Dianthus could be stored successfully for 30 days at 1℃ and 10℃ under darkness, and Gypsophila for 20 days at 1℃ and 10℃. In all the species, when stored for 30 days at 1℃, growth after transplanting stopped temporarily and a time lag was observed for several days until the growth was restarted.
キーワード
cold storage
dark conditions
vegetative propagation plant
time lag
shoot elongation
ISSN
0474-0254
NCID
AN00033029