@article{oai:soar-ir.repo.nii.ac.jp:00010803, author = {中山, 昌明}, issue = {2}, journal = {信州大学農学部紀要}, month = {Dec}, note = {The observation was carried out to ascertain some effects of seed-sowing time on growth and flowering of cyclamen, Salmon Scarlet from 1965 to 1968 in a greenhouse. The seeds were sowed in clay pots with twelve times at one month interval, i. e. from September 20, 1965 to August 20, 1966. The seedlings were transplanted to 9 cm clay pots at the stage of 4-5 leaves and thereafter they were transplanted again in 15 cm pots at 10-12 stage. The results were summarized as followes ; 1) There was no clear proportional effect of the sowing time on days from germination to flower bud differentiation and those from flower bud differentiation to flowering. Days from germination to flower bud differentiation should be shortened gradually as sowing time delays from December to May in succeeding year and thereafter, its tendency turned back to those before December. On the other hand, change of days from flower bud differentiation to flowering with the different sowing time followed a similar tendency up to May, however, days required to flowering were exceedingly prolonged from June to August. 2) Mean maximum day required from sowing to flowering was 485 in July and 326 for minimun in May. 3) Maximum number of leaves per plant at the time of flowering observed in that sowed in September. Number of leaves sowed in from October to May in succeeding year decreased as sowing time delays. While, it gradually increased again as the time advances and consequently it reached a peak sowed in September. If the number of leaves per plant sowed in September could be supposed as 100, figures with the change of sowing time might decrease gradually to 42-48 at the time of May and June and then increased again to 85-91 at July and August. 4) The similar tendency as the number of leaves appeared on various proper-ties of plants, e. g. , height of plant, width of plant, width of the largest leaf blade and length of flower scape at the flowering time. Supposing as 100 in each pro-perty, variance from maximum and minimum number in each property should beless than in the number of leaves. 5) Number of flowers per plant during one month after commencement of flowering also followed a similar tendency as all of properties observed and number of flowers sowed in May, however, was less amount and it took only 32 percent of that sowed in September. 6) Further, the author would discuss on the sowing time related to the control of suitable shipping time., Article, 信州大学農学部紀要 14(2): 137-146(1977)}, pages = {137--146}, title = {シクラメン栽培の基礎的研究 第1報 シクラメンの生育開花におよぼす播種期の影響}, volume = {14}, year = {1977} }