頁籤選單縮合
題名 | 電燈照明配合生長素撒佈對於菊花開花之研究 |
---|---|
作者姓名(中文) | 杜賡甡; | 書刊名 | 中華農學會報 |
卷期 | 68 1969.12[民58.12] |
頁次 | 頁12-31 |
關鍵詞 | 生長素; 菊花; 電燈照明; |
語文 | 中文(Chinese) |
中文摘要 | (一)為提高本省菊花生產技術水準,短日低溫季節實施電燈照明,以防止早期出蕾開花。更配合生長素撒佈,以其效果更趨整齊劃一,使用代表早(9週)BGA Montana,早中(11週)BGA Adoration,中(13週)N. Enchantress ,及晚(15週)N. Yellow Illini Cascade 等四個反應?品種為材料,於長日狀態下,(除自然日長外,每晚10時至翌晨2時電照4小時),扦插育苗,上缽定植。 (二)生長素處理有直接照光(30~40 Foot-candles)與斜側照光(3~20 Foot-candles)兩大區,每區中又分為NAA 50ppm, GA 50ppm, NAA 50ppm+ GA 50ppm, NAA 100ppm後改為 25ppm 及對照共5種處理,每種處理各5株,並重複1次,共10株,自58年1月13日起第一次噴灑,以後每隔3~4天噴灑一次,第三次後NAA 100ppm因藥害嚴重,以後改為 25ppm,各處理共噴灑10次,於2月27日停止長日照光,同時亦停止生長素噴灑。調查其後生長開花情形。 (三)NAA 50ppm配合電燈照明抑制植株伸長及開花效果最顯著,但有些品種葉上藥害嚴重,實際栽培上應慎選適當品種。 (四)GA 50ppm配合電燈照明不僅可促進植株伸長,並可使花芽分化與出蕾開花提前。 (五)NAA 50ppm+ GA 50ppm配合電燈照明,其效果介乎單用NAA 50ppm或單用 GA 50ppm之間。 (六)本次實驗直接照光為兩盞100瓦白熱燈泡,距2公尺外最遠處之斜側照光株仍有3 Foot-candles (約等於28 Lux) 光度實屬過高,以致處理5株間差異很少。 (七)主莖伸長最多期間在花芽分化,花蕾出現發生之後,小花擴大開放之前,但13、15週中,晚生種NAA生長素處理者則有例外。 (八)最大量莖伸長之部位不論任何品種或處理方法,均發生在第3至第7節間。 |
英文摘要 | 1. The standard of chrysanthemum growing in Taiwan has been raised by using electric lightening during the short-day winter months to prevent early budding and flowering. With the application of growth substances in combination with the lightening, this experiment was carried out for the purpose of obtaining a more uniform effect on the plants. Four varieties of chrysanthemum representing four different response groups were used, namely, 9- week BGA Montana, 11-week BGA Adoration, 13-week N. Enchantress and 15-week N. Yellow Illini Cascade. Cuttings were propagated under artificial long-day condition (they were lighted every night from 10 p.m. to 2 a.m. in addition to natural daylight), after which the yough plants were potted. 2. The plants were divided and put into 2 major sections, one section was under direct lightening (30-40 foot-candles), and other was under oblique lightening (3-20 foot-candles). In each section, five different treatments were applied, namely, NAA 50 ppm; GA 50 ppm; NAA 50ppm +GA 50ppm; NAA 100 ppm which was later changed to 25 ppm; and check. There were five plants for each treatment, and the experiment was duplicated. Spraying of growth substances began on January 13, 1969, and thereafter it was carried out once every 3-4 days for 10 times. After the third time, due to the serious injury caused, NAA 100 ppm was changed to 25 ppm. The last spraying was on February 27, while the artificial lightening was also terminated on that same day. The growth and flowering of the plants were observed, measured and recorded. 3. NAA 50 ppm used in conjunction with electric lightening had a marked effect on the inhibition of stem elongation and flowering. However, the injury caused by the growth substance was serious on some varieties, therefore, in practice, special care must be taken to select the suitable varieties. 4. GA 50ppm applied in conjunction with electric lightening not only promoted stem elongation, but also hastened flower bud initiation and development, as well as anthesis. 5. The effect of NAA 50 ppm +GA 50ppm was in between those of NAA 50 ppm or GA 50 ppm applied alone. 6. In this experiment, two 100-watt incandescent lamps were used to provide artificial lightening. The farthest plant from the source of light was 200 cm. from it, which still received oblique lightening of 3 foot-candles (approximately equivalent to 28 lux). This light intensity was found to be too high, which accounted for the small differences of effect found among the five plants receiving the same treatment. 7. Maximum stem elongation was found to take place after bud initiation and development, and before expansion and full bloom of the flower. Exception to this occurred in NAA treatment for the 13-week and 15-week varieties. 8. For variety or treatment, the place of maximum stem elongation always occurred between the third and the seventh nodes from the apex. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。